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iC- r8500
COMMUNICATIONS RECEIVER
INSTRUCTION MANUAL
Versions of the IC-R8500 which display the “CE”
symbol on the serial number seal, comply with
the essential requirements of the European
Radio and Telecommunication Terminal Directive
1999/5/EC, and that any applicable Essential Test Suite
measurements have been performed.
UNPACKING
PRECAUTIONS
IMPORTANT
READ THIS INSTRUCTION MANUAL
CAREFULLY before attempting to operate the
receiver.
SAVE THIS INSTRUCTION MANUAL. This
instruction manual contains important safety and oper-
ating instructions for the IC-R8500.
EXPLICIT DEFINITIONS
RINDOOR USE ONLY! NEVER expose the
IC-R8500 or AC adapter to rain, snow or any liquids.
RNEVER connect the receiver to an AC outlet
directly. This may pose a fire hazard or result in an
electric shock. Always use the supplied AC adapter or
connect to a 13.8 V DC power source.
RNEVER connect to an AC outlet that exceeds the
suggested voltage for each AC adapter version. This
could cause a fire or ruin the AC adapter and/or
receiver.
RNEVER use non-rated fuses. Non-rated fuses
could cause a fire or ruin the receiver.
NEVER let metal, wire or other objects touch any
internal part or connectors on the rear panel of the
receiver. This will cause electric shock.
AVOID using or placing the receiver in areas with tem-
peratures below –10°C (+14°F) or above +50°C
(+122°F).
AVOID placing the receiver in excessively dusty envi-
ronments or in direct sunlight.
AVOID placing the receiver against walls or putting
anything on top of the receiver. This will obstruct heat
dissipation.
RESPECT other people’s privacy. Information over-
heard but not intended for you cannot lawfully be used
in any way.
i
Accessories included with the IC-R8500:
Qty.
q AC adapter (AD-55A)*........................................... 1
w DC power cable (OPC-023C) ................................ 1
e Mini plug (2-conductor, 3.5d) ................................. 1
r Phono (RCA) plugs ...............................................2
t Fuse (FGMB 125 V 3 A; internal use) ................... 1
y Fuses (FGB 3 A; for DC cable) .............................2
u Screws (M4 × 12 for optional MB-23) ..................... 2
i Screws (C0 3 × 8 for optional MB-23 feet) ............. 4
o Allen bolts (M5 × 8 for optional IC-MB12) ..............4
*Some versions are not supplied with an AC adapter.
q
w
e
rt y u i
o
WORD DEFINITION
RWARNING
Personal injury, fire hazard or electric
shock may occur.
CAUTION
Equipment damage may occur.
NOTE
If disregarded, inconvenience only. No risk
of personal injury, fire or electric shock.
TABLE OF CONTENTS
IMPORTANT ............................................................. i
EXPLICIT DEFINITIONS .......................................... i
PRECAUTIONS ........................................................ i
UNPACKING............................................................. i
TABLE OF CONTENTS ............................................ ii
1 PANEL DESCRIPTION .....................................1–6
Front panel ................................................................... 1
Rear panel ...................................................................5
Function display ...........................................................6
2 CONNECTIONS ..............................................7–10
Mounting installation ....................................................7
Required connections ..................................................8
Antenna connection .....................................................9
Grounding ....................................................................9
Tape recorder connections ........................................ 10
Transceive function .................................................... 10
Connecting to a PC ................................................... 10
Data demodulation terminal ....................................... 10
3 FREQUENCY SETTING ................................ 11–12
Read me first .............................................................. 11
Using the keypad ....................................................... 11
Using the main dial ....................................................12
Lock function .............................................................. 12
4 RECEIVE FUNCTIONS ................................. 13–16
Initial settings .............................................................13
Mode selection ........................................................... 13
Squelch function ........................................................ 14
Functions for FM ........................................................ 14
Functions for SSB/CW ............................................... 14
Data communications .................................................16
5 MEMORY CHANNELS ..................................17–22
General ......................................................................17
Bank selection ........................................................... 17
Channel selection ...................................................... 18
Programming .............................................................19
Copy and paste (memory editing) .............................. 19
Clearing ..................................................................... 19
Channel/bank names ................................................. 20
Assigning channels numbers .....................................21
6 SCANS ..........................................................23–28
Operation ...................................................................23
Mode select function .................................................. 25
Specifying skip channel and frequency ..................... 25
Automatic bank limit/skip functions ............................ 26
Voice scan control function ........................................ 26
Programming scan edge frequencies ........................ 27
Scan speed/delay functions ....................................... 27
7 SLEEP TIMER .....................................................29
8 SET MODE ..........................................................30
General ......................................................................30
Quick set mode items ................................................ 31
Initial set mode items ................................................. 31
9 CONNECTOR INFORMATION ...................... 33– 34
10 CONTROL COMMANDS ............................ 35–36
Command table ......................................................... 35
Data format ................................................................35
11 MAINTENANCE ................................................. 37
Disassembly .............................................................. 37
Fuse replacement ......................................................37
Level adjustments ...................................................... 37
Memory backup ......................................................... 37
CPU resetting ............................................................ 37
Cleaning ..................................................................... 37
12 OPTIONAL INSTALLATIONS ..................... 38– 39
UT-102
VOICE SYNTHESIZER UNIT
................................ 38
FL-52A
CW NARROW FILTER
........................................ 38
CR-293
HIGH STABILITY CRYSTAL UNIT
......................... 39
13 TROUBLESHOOTING ................................. 40–41
14 SPECIFICATIONS .............................................42
15 OPTIONS ........................................................... 43
16 DOC ...................................................................44
ii
q POWER SWITCH [POWER]
Turns power ON and OFF.
w SLEEP/SET SWITCH [SLEEP/SET]
Push momentarily to set the sleep timer (p. 29).
Selectable times are 30, 60, 90, 120 min. or OFF.
” appears in the function display when the
sleep timer is set.
Push for 1 sec. to enter quick set mode (p. 30).
Use the [M-CH] selector and main dial to select items
and contents, respectively.
e
RECORDER REMOTE JACK [REC REMOTE] (p. 10)
Controls the running of a tape recorder for record-
ing. Connects to the REMOTE jack on a tape
recorder.
r RECORDER JACK [REC OUT] (p. 10)
Outputs an audio signal. Connect to the AUX or
LINE IN jack on a tape recorder.
t HEADPHONE JACK [PHONES]
Accepts headphones with 4–16 impedance.
When headphones are connected, no receive audio comes
from the speaker.
Stereo headphones can be connected, however, output
is monaural.
y MODE SWITCHES [WFM]/[FM]/[AM]/[SSB/CW]
(p. 13)
Push to select an operating mode.
The following keys toggle between several modes:
[FM] .................FM, FM narrow
[AM] .................AM, AM narrow, AM wide
[SSB/CW] ........USB, LSB, CW, optional CW narrow
When SSB/CW mode is selected, push [SSB/CW]
for 1 sec. to adjust the BFO frequency. (p. 15).
u NOISE BLANKER/AFC SWITCH [NB]/[AFC]
Activates the noise blanker function or automatic fre-
quency control function.
The noise blanker is used for removing pulse-type noise
when SSB, CW or AM mode is selected (p. 15).
The automatic frequency control tunes the displayed fre-
quency automatically when an off-center frequency is re-
ceived. It activates when FM or WFM is selected (p. 14).
i AUDIO FREQUENCY GAIN CONTROL
[AF GAIN] (p. 13)
Rotate clockwise to increase the audio output; rotate
counterclockwise to decrease the audio output.
o AUTOMATIC GAIN CONTROL [AGC] (p. 15)
Toggles the time constant of the AGC circuit be-
tween “slow” and “fast.”
When “fast” is selected, “AGC-F” appears.
Cannot be used in FM or WFM modes.
!0 SQUELCH CONTROL [SQUELCH] (p. 14)
Varies the squelch threshold level (to mute noise
when receiving no signal).
!1 IF SHIFT CONTROL [IF SHIFT] (p. 14)
Shifts the center frequency of the receiver’s IF pass-
band to reject interfering signals.
Cannot be used in FM, WFM and AM modes.
1
1
PANEL DESCRIPTION
MODE
WFM
NB/AFC AGC 10dB 20dB
FM AM
APF
TS
TS
SPCH
SSB/CW
AF GAIN SQUELCH
PHONES
REC OUT
SLEEP/
REC
REMOTE
IF SHIFTAPF
SET
LOCK
COMMUNICATION RECEIVER
iC- r8500
POWER
SIGNAL
S
13579
+
20dB
+
60dB
@0
q
w
e
r
t
yio!0 !1 !2 !3 !4u
FM
RECV
BANK
10-ATT-20
APF-NAGC-FAFCNB
SLEEP
LOCK
ICOM
S-meter squelch
threshold
Noise squelch
threshold (not
available in SSB,
CW, WFM and
AM narrow modes)
Signals below the
S-meter level
are muted.
Front panel
2
1
PANEL DESCRIPTION
!2 AUDIO PEAK FILTER CONTROL [APF] (p. 15)
Adjusts the audio peak lter setting to pick up a de-
sired audio frequency. Only valid when the [APF]
switch is ON.
Clockwise rotation adjusts the lter setting higher; coun-
terclockwise rotation adjusts the lter setting lower.
!3
ATTENUATOR SWITCHES [10dB]/[20dB]
Push to activate one of the attenuators.
Push [10dB] to activate the 10 dB attenuator.
Push [20dB] to activate the 20 dB attenuator.
Push [10dB] + [20dB] to activate the 30 dB attenuator.
10 dB and 30 dB attenuator cannot be used below 500 kHz.
!4 AUDIO PEAK FILTER SWITCH [APF] (p. 15)
Push momentarily to toggle the audio peak lter
circuit ON and OFF.
Use the [APF] control to adjust the center of the audio
peak passband.
When the audio peak lter circuit is ON, push for
1 sec. to toggle the lter setting between normal
and narrow.
•‘Narrow is available for SSB, CW and AM only.
!5
SPEECH/LOCK SWITCH [SPCH/LOCK]
Push momentarily to activate the voice synthesiz-
er function and have the displayed frequency
announced.
An optional UT-102
SPEECH SYNTHESIZER UNIT
is nec-
essary to activate the voice synthesizer function (p.38).
Automatic announcement at signal detection during
scan is available. Refer to the REC SPCH item on
p. 31 for details.
Push for 1 sec. to activate the lock function (p. 12).
Push for 1 sec. again to cancel the lock function.
The lock function action can be selected in set mode
to cover the main dial only, or to cover both the main
dial and front panel switches.
!6
TUNING STEP SWITCHES [TS]/[TS] (p. 12)
Select the tuning step for the main dial. Push [TS]
to select a larger tuning step; push [TS] to select
a smaller tuning step.
10 Hz, 50 Hz, 100 Hz, 1 kHz, 2.5 kHz, 5 kHz, 9 kHz, 10
kHz, 12.5 kHz, 20 kHz, 25 kHz, 100 kHz and 1 MHz are
selectable.
Programmable tuning steps can be set between 0.5 and
199.5 kHz.
To set programmable tuning steps, enter the desired
steps via the keypad, then push [TSY]or [TSZ].
!7
MAIN DIAL
Changes the operating frequency, set mode contents,
etc.
!8 BRAKE ADJUSTMENT SCREW
Adjusts the main dial tension.
!9 FUNCTION DISPLAY (p. 6)
Shows the selected frequency, mode, memory
name, etc.
@0 S-METER
Shows the strength of the received signal.
Shows the squelch threshold level when the
[SQUELCH] is rotated past the center position.
MEMO
SEL SKIP VSC
DLY
SCAN/
NAME
SCAN SET
PROG AUTO PRIO
M-SET BANK
M-CL MW
DELAY/SPEEDM-CH
D/S
1 QZ
GHI
PRS TUV WXY
ENT
BANK
BANK
JKL MNO
ABC DEF
.
;
,
4
78
0CE
ENT
M-CH
.
9
56
23
!9
!5
!6
!8
!7
SEL-CH SKIP-CH
OFF
kHz
DLY
M
IC-R8500
Center frequency
is shifted up.
Center frequency
is shifted down.
@1 MEMORY SET SWITCH [M-SET] (p. 19)
Used to copy and paste the displayed frequency
into another memory channel.
The rst push is used to copy ( appears), and the sec-
ond push is used to paste ( disappears).
Frequency, mode, tuning step, memory name, etc. can
be programmed into a temporary memory.
@2
MEMORY CLEAR SWITCH [M-CL] (p. 19)
Push and hold to clear the contents of the displayed
memory.
Bank names cannot be cleared.
@3
MEMORY WRITE SWITCH [MW] (p. 19)
Push and hold to store the displayed frequency,
mode, tuning step, etc. into the selected memory
channel.
@4 BANK SWITCH [BANK] (p. 17)
Push momentarily to toggle the bank limit func-
tion ON and OFF (p. 18).
While BANK appears, only memory channels within
the selected bank can be selected via the [M-CH] se-
lector.
Push for 1 sec. to increase/decrease the number of
memory channels in the selected bank (p. 21).
@5 MEMORY CHANNEL SELECTOR [M-CH] (p. 18)
Selects a memory channel in normal use.
Clockwise rotation selects higher memory channel
numbers; counterclockwise rotation selects lower
memory channel numbers.
Selects a set mode item when quick set mode or
initial set mode is selected (p. 30).
@6 DELAY/SPEED CONTROL [DELAY/SPEED] (p. 28)
Adjusts the scan delay time or scan speed depend-
ing on the [DLY ] switch setting.
When scan delay time is assigned, this control adjusts
the scan delay time (scan pausing interval) during signal
reception. This setting is effective when “” is
selected for the scan resume condition.
When scan speed is assigned, this control adjusts the
scan speed. In this case, scan delay time is determined
while setting.
@7
SCAN SWITCHES [SCAN ]
All of these switches are related to the scan function
in some way as follows:
[MEMO] (p. 23)
Push momentarily to start/stop memory scan.
Push numeral keys, then this key to start memo-
ry scan in the specied bank.
Push this key, then a mode switch to activate
mode select scan function.
Push for 1 sec. to set automatic bank and skip
functions.
The bank limit function and/or memory skip functions
are activated automatically when AUTO is selected
and scan is started.
[SEL] (p. 23)
Push momentarily to start/stop memory select
scan.
Push for 1 sec. to set the memory channel as a
select channel.
[PROG] (p. 24)
Push momentarily to start/stop programmed scan.
Push numeral keys, before or after pushing this
key to start programmed scan using the specied
scan edge group.
10 scan edge groups are available.
Push for 1 sec. to program scan edges for pro-
grammed scan.
M
M
3
1
PANEL DESCRIPTION
4
1
PANEL DESCRIPTION
[SKIP] (p. 25)
Push momentarily to toggle the skip function ON
and OFF for any scan.
Automatic skip activation is available with the [MEMO]
switch.
Push for 1 sec. to set the memory channel as a skip
channel.
[AUTO] (p. 24)
Push momentarily to start/stop auto write scan.
Push for 1 sec. to select the written memories
condition for the auto write scan.
Two conditions are available, clear auto-written mem-
ories before scan starts; and, keep auto written mem-
ories before scan start.
[VSC] (p. 26)
Push to toggle the voice scan control function ON
and OFF.
The VSC function resumes the scan when a detected sig-
nal does not contain voice components.
•“VSC appears while the voice scan control function is
activated.
[PRIO] (p. 25)
Push momentarily to start/stop priority scan.
Priority scan can be used in combination with other
scans.
Push for 1 sec. to enter the priority channel pro-
gramming condition.
[DLY ] (p. 27)
Push momentarily to select a scan resume condi-
tion.
OFF is underscored: scan pauses on a signal until it
disappears, then resumes 3 sec. after that.
DLY is underscored: scan resumes according to the
[DELAY/SPEED] control setting. When a signal dis-
appears, scan resumes 3 sec. later.
is underscored: scan is cancelled when receiving
a signal.
Push for 1 sec. to enter the delay time/scan speed
setting condition.
The function of the [DELAY/SPEED] control can be se-
lected.
@8
KEYPAD
The keypad can be used for several functions as below:
Keypad then [ENT] (then [MW])
Direct frequency input.
Keypad then [M-CH]
Memory channel selection.
[CE
NAME] then keypad
Alphanumeric input for memory, bank names, etc.
Keypad then [TSY] or [TSZ]
Arbitrary tuning step setting.
Keypad then [MEMO] or [SEL]
Specify memory bank then start memory scan or se-
lect memory scan.
Keypad then [PROG] or [AUTO]
Specify scan edge group, then start programmed
scan or auto write scan.
MEMO
SEL SKIP VSC
DLY
SCAN/
NAME
SCAN SET
PROG AUTO PRIO
M-SET BANK
M-CL MW
DELAY/SPEEDM-CH
D/S
1 QZ
GHI
PRS TUV WXY
ENT
BANK
BANK
JKL MNO
ABC DEF
.
;
,
4
78
0CE
ENT
M-CH
.
9
56
23
@2 @3@1 @4 @5 @6
@7
@8
SEL-CH SKIP-CH
OFF
kHz
DLY
M
IC-R8500
5
1
PANEL DESCRIPTION
Rear panel
q
RS-232C CONNECTOR (p. 10)
Connects an RS-232C cable. An RS-232C cable
can be used to connect the IC-R8500 to a PC. In this
way commands can be sent to the receiver via the
PC.
w CI-V REMOTE CONTROL JACK (p. 10)
Allows connection to an Icom CI-V system trans-
ceiver or another receiver for the transceive function.
Also connects to a PC with several receivers for
command control via an optional CT-17
CI
-
V LEVEL
CONVERTER
.
e IF OUT JACK
Outputs a 10.7 MHz IF signal with 9 V DC for an ex-
ternal equipment.
r AGC JACK (p. 16)
This jack has functions which are selectable through
internal receiver settings.
Outputs an AGC signal for an external equipment (de-
fault).
Outputs audio detected signal without de-emphasis for
9600 bps data detection (FM mode only).
t DC 13.8 V JACK (p. 8)
Plug in the jumper connector here when using the
supplied* AC adapter.
Connects to a 13.8 V DC power source using the
supplied DC cable when the AC adapter is not
connected.
*Not supplied with some versions.
y EXTERNAL SPEAKER JACK
Connects an 8 external speaker.
When an external speaker is connected, the internal
speaker does not function.
u DC IN JACK (p. 8)
Connects the supplied* AC adapter.
A regulator circuit has been designed between this con-
nector and the DC 13.8 V jack.
Be sure the jumper connector is connected to the DC
13.8 V jack.
*Not supplied with some versions.
i HF 50 ANTENNA CONNECTOR (p. 8)
Connects an antenna to cover the frequency range
below 30 MHz.
Use a coaxial cable and a PL-259 connector.
Be sure this connector is selected in quick set mode
(p. 31).
o GROUND TERMINAL (p. 9)
Connect this terminal to a ground.
!0 HF 500 ANTENNA CONNECTOR (p. 8)
When a 500 long wire antenna is used for HF band
receiving, this connector is used instead of the 50
antenna connector.
Set the HF ANT item to 500 to use this connector
(p. 31).
!1 VHF/UHF ANTENNA CONNECTOR (p. 8)
Connects an antenna to cover the frequency range
over 30 MHz.
Use a coaxial cable and type-N connector.
q w e r y u
t
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i
!0!1
6
1
PANEL DESCRIPTION
Function display
q
REMOTE INDICATOR (p. 35)
Appears when a level control command is received from a
PC via CI-V data.
When this indicator appears, the control knobs setting is
ignored.
This indicator will disappear when the control knob is rotated.
w MODE INDICATORS (p. 13)
Show the operating mode.
e FREQUENCY READOUT
Shows the operating frequency.
r SKIP INDICATOR (p. 25)
Appears when the skip function is activated.
Flashes during scan when the skip function is ac-
tivated by the auto skip function.
t VSC INDICATOR (p. 26)
Appears when the voice scan control function is
activated.
y
SCAN RESUME CONDITION INDICATORS (p. 27)
Show the selected scan resume condition.
u TUNING STEP INDICATORS (p. 12)
Show the selected tuning step.
“” appears when a programmable tuning step is selected.
i TEMPORARY MEMORY INDICATOR (p. 19)
Appears when [M-SET] is pushed to indicate that
a frequency is being temporarily saved.
Disappears when the temporary memory is past-
ed into another memory channel.
o MEMORY CHANNEL READOUT (p. 17)
Shows the selected memory channel number.
!0 SKIP CHANNEL INDICATOR (p. 25)
Appears when the selected memory channel is set
as a skip channel.
!1 MEMORY NAME INDICATORS (p. 20)
Display names programmed into a memory, or scan
group.
!2 SELECT CHANNEL INDICATOR (p. 23)
Appears when the selected memory channel is set
as a select channel.
!3 BANK NUMBER INDICATOR (p. 17)
Shows the selected memory bank number.
!4 BANK INDICATOR (p. 18)
Appears when the bank limit function is activated.
Flashes during scan when the bank limit function
is activated by the auto bank function.
!5 BANK NAME INDICATOR (p. 20)
Displays names programmed into a bank.
!6 AUDIO PEAK FILTER INDICATOR (p. 15)
APF or APF-N appears when the audio peak l-
ter function is activated.
!7 ATTENUATOR INDICATORS
Appear when the RF attenuator is activated.
!8 AUTOMATIC GAIN CONTROL INDICATOR (p. 15)
AGC-F appears when AGC fast is selected; no indi-
cation appears when AGC slow is selected.
!9 RECEIVE INDICATOR
Appears while receiving.
@0 FM CENTER INDICATORS (p. 14)
Appear when the received signal is not tuned to its
center frequency.
@1 NOISE BLANKER INDICATOR (p. 15)
Appears when the noise blanker circuit is activated.
@2 AFC INDICATOR (p. 14)
Appears when the automatic frequency control
function is activated in either FM or WFM modes.
@3 LOCK INDICATOR (p. 12)
Appears when the main dial or front panel switches
are locked.
@4 SLEEP INDICATOR (p. 29)
Appears when the sleep timer is set.
P
REMOTE
WFM
RECV
AMUSBLSBCW
BANK
10-ATT-20
APF-NAGC-FAFCNB
SEL-CH SKIP-CH
WIDE NAR
SKIP VSC
OFF
MHz kHz
DLY
SLEEP
LOCK
M
P
qwerty
u
io!0!1!2!3!4!5!6!7!8!9@0 @0
@1
@2
@3
@4
7
2
CONNECTIONS
Mounting installation
D Location
Select a location for the receiver that allows adequate
air circulation and access to the front and rear panels.
Do not place in areas subject to extreme heat, cold, or
vibrations, or near TV sets, radios and electromagnetic
sources.
Be careful of the internal temperature of the receiver.
Installation into a rack or other enclosed area may in-
crease the internal temperature over the useable tem-
perature range. Specifications are not guaranteed
under such conditions.
D Receiver stand
The base of the IC-R8500 has an adjustable stand for
desktop use. Set the stand to one of two angles de-
pending on your operating conditions.
D Optional bracket and carrying handle
Mounting bracket
An optional mounting bracket is available to install the
radio under a table, on a wall, in a vehicle, etc.
Select an area to mount the receiver keeping in mind
that the weight of the IC-R8500 is approx. 7 kg.
Carrying handle
An optional handle allows you to easily carry and
transport the receiver.
Attach the MB-23
CARRYING HANDLE
with the supplied
rubber feet as shown.
CAUTION: The screws supplied with the MB-23
cannot be used with the IC-R8500. Use the screws
supplied with the IC-R8500 when attaching the
MB-23.
Flat washer
Spring
washer
Allen bolt
supplied with
the IC-R8500.
8
2
CONNECTIONS
Required connections
IC-R8500
Supplied DC power cable
Unplug the jumper plug
from the [DC13.8V] jack.
AC adapter AD-55/A/V
Connect
either power
source
The jumper plug must be
connected to the [DC 13.8V]
jack.
Ground connection (p. 9)
HF antennaLong wire antennaVHF/UHF wide band
antenna
Computer control
(p. 10)
External speaker
(p. 43)
High speed data
connection (p. 16)
0.1–30 MHz coverage0.1–30 MHz coverage30 MHz –2 GHz coverage
The optional AH-7000 is
available for 25 MHz to 1.3
GHz coverage.
Select the active antenna connector in quick set mode (p. 31)
9
2
CONNECTIONS
Antenna connection
Antennas play a very important role in receiver opera-
tion. Connecting a poor quality antenna to the
IC-R8500 will result in less than optimum performance.
The IC-R8500 requires at least 2 antennas for full fre-
quency coverage: one for 0.1 to 30 MHz and one for
30 to 2000 MHz.
D Using a long wire antenna for HF bands
The IC-R8500 has a 500 phono (RCA) antenna
connector for the HF bands. When using a long wire
antenna, instead of a 50 matched antenna, use one
as long as possible (at least 10 m, 33 ft) and select the
active connector as follows:
q Push [SLEEP/ ] for 1 sec. to enter quick set
mode.
w Rotate the [M-CH] selector to select the HF ANT
item.
e
Rotate the main dial to select the antenna connector.
r Push [SLEEP/ ] momentarily to exit quick set
mode.
Grounding
To prevent accidents involving electricity and interfer-
ence from transceivers, ground the receiver through
the [GND] terminal on the rear panel.
For best results, connect a heavy gauge cable to a
water pipe or long, earth-sunk copper rod. Make the
distance between the [GND] terminal and ground as
short as possible.
RWARNING: NEVER use a gas pipe or electri-
cal conduit pipe for grounding.
30 mm
10 mm (soft solder)
10 mm
12 mm
solder solder
Soft
solder
Coupling ring
PL-259 CONNECTOR INSTALLATION EXAMPLE
qe
r
w
Slide the coupling ring
down. Strip the cable
jacket and soft solder.
Slide the connector
body on and solder it.
Screw the coupling ring
onto the connector
body.
Strip the cable as
shown at left. Soft
solder the center con-
ductor.
(10 mm
3
8 in)
15 mm
Clamp
3 mm 6 mm
Center conductor
Washer
Nut Rubber gasket
TYPE-N CONNECTOR INSTALLATION EXAMPLE
qe
r
w
Slide the nut, washer,
rubber gasket and
clamp over the
coaxial cable, then
cut the end of the
cable evenly.
Soft solder the center
conductor. Install the
center conductor pin and
solder it.
Carefully slide the plug
body into place aligning
the center conductor pin
on the cable. Tighten the
nut onto the plug body.
Be sure the center
conductor is the same
height as the plug body.
Strip the cable and
fold the braid back
over the clamp.
(10 mm
3
8 in)
Plug body
No space
Solder hole
500 HF ANT
10
2
CONNECTIONS
Tape recorder connections
The [REC OUT] jack has 350 mV rms/4.7 k output
for connection to other audio equipment.
Transceive function
Icom CI-V transceivers or receivers can be connect-
ed via the [REMOTE] jack. The frequency and mode
become the same* when either radio is changed.
* When a set frequency is out-of-range for one of the con-
nected transceivers or receivers, the connected radios
frequency/mode does not change.
Connecting to a PC
Data demodulation terminal
See p. 16 for details regarding connection and opera-
tion.
The IC-R8500 can connect directly to a personal
computer providing control of multiple functions such
as instant frequency/name programming using
appropriate software. See pgs. 35, 36 for the control
command table.
Personal computer
IC-R8500
RS-232C
cable
13
25 14
2.RXD (data input)
3.TXD (data output)
1
20 6
8
IC-R8500
SCAN SET
[REC
REMOTE]
[REC OUT]
350 mVrms
4.7 k
[AUX IN] or
[LIVE IN] jack
Convenient:
When an optional UT-102
VOICE SYNTHESIZER UNIT
is
installed, detected frequencies during scanning can
be recorded. See pgs. 31, 32 for settings.
[REC REMOTE] jack: Grounds when a signal is
received and squelch opens. If a tape recorder has
a control terminal, this jack can be used for record-
ing control. (2 A/DC max.)
Connect to [REMOTE] jack
Be sure the CIV TRAN item is turned ON in initial set mode (p. 32).
A DB9/DB25 adapter may be
required depending on the PCs
connector.
11
3
FREQUENCY SETTING
Read me rst
The IC-R8500 uses memory channels for storage of
frequencies (as well as mode, tuning steps, etc.).
When turning power OFF or changing memory chan-
nels, the previously displayed frequency cannot be
recalled unless it has been stored into a memory
channel. Therefore, when you want to keep a dis-
played frequency for later recall, you must program it
into a memory channel by pushing [MW] for 1 sec.
Convenient:
Use [M-SET] to program a displayed frequency (and
its mode, etc.) without overwriting the currently select-
ed memory. See p. 19.
Using the keypad
q Push the numeral keys on the keypad to enter the
MHz digits for the desired frequency.
If a key is mistakenly pushed, push [CE
] and start
again from the beginning.
When entering the same MHz digits as the displayed
frequency, this step can be skipped.
w Push [
].
e Push the numeral keys to enter the frequency digits
below 1 MHz.
If a key is mistakenly pushed, push [CE
] and start
again from the beginning.
r Push [ENT] to set the input frequency.
When pushing [ENT] after entering the MHz digits, zeros
are automatically entered for the kHz digits.
[EXAMPLE]: SETTING THE FREQUENCY USING THE KEYPAD
To set to 145.00 MHz
1
45
ENT
To set to 1296.040 MHz
1
29 6
04
ENT
To set to 850 kHz
(0.85 MHz)
08
5
ENT
To change from 1296.040
to 1296.850 MHz
8
5
ENT
Push [MW] for 1 sec. after tuning.
FM
OFF
kHz
DLY
USR-A BLANK
BLANK appears in the memory name area until
[MW] is pushed for 1 sec.
12
3
FREQUENCY SETTING
Using the main dial
Rotate the main dial to change the frequency.
The frequency changes in increments determined by the
selected tuning step (see below).
When the lock function is activated (LOCK appears) the
frequency cannot be changed.
D Selecting a tuning step
13 preset tuning steps are available plus 1 programma-
ble tuning step (see below). The preset tuning steps are:
10 50 100 Hz
1 2.5 5 9 10 12.5 20 25 100 kHz
1 MHz
Push [TSY] or [TSZ] to change the selected tuning
step.
D Setting the programmable tuning step
The programmable tuning step can be set between the
range of 0.5199.5 kHz (in 0.5 kHz steps) for each
memory independently.
q Push the numeral keys on the keypad that corre-
spond to the tuning step you wish to program.
w Push [TSY] or [TSZ] to set the programmable tun-
ing step to the selected value.
The programmable tuning step is automatically selected
as the active tuning step.
Lock function
The lock function electronically locks the indicated fre-
quency from accidentally being changed.
Push [
SPCH ] for 1 sec. to toggle the lock func-
tion ON and OFF.
•“LOCK appears in the function display while the lock
function is activated.
D Setting the lock function coverage
The lock function can be set to lock the main dial only
or, the main dial and most of the front panel switches.
q Push [SLEEP ] for 1 sec. to enter quick set
mode.
w Rotate the [M-CH] selector to select the LOCK
indication.
e Rotate the main dial to set the lock function cover-
age to DIAL or PANEL.
r Push [SLEEP ] momentarily to exit quick set
mode.
SCAN SET
[TSY]
[TSZ]
MHz kHz
P
Tuning step
indicators
MHz kHz
P
appears when the programmable tuning step
is selected.
or appears to indicate the units of
the selected tuning step.
[EXAMPLE]: Setting the programmable tuning step to 50 kHz.
(or )
kHz
P
kHzkHz
5
0
TS
TS
FM
kHz
LOCK
*ICOM
IC-R8500
OFF DLY
LOCK
DIAL
kHz
FM
OFF DLY
13
4
RECEIVE FUNCTIONS
Initial settings
Mode selection
Push one of the mode keys one or more times to
select the desired mode. Consult the table below for
basic characteristics of each mode.
The indications in the table appear in the bank name
area for 1 sec. after an operating mode is selected.
SCAN SET
FM
RECV
BANK
10-ATT-20
APF-NAGC-FAFCNB
OFF
kHz
DLY
SLEEP
LOCK
*ICOM IC-R8500
[AF GAIN]: 10 oclock
[APF]: center
[IF SHIFT]: center
Push [SLEEP]
Push [NB/AFC]
Push [AGC] Push [10dB] and/or [20 dB]
Push and hold
[
SPCH LOCK]
Before turning power ON, set controls and switches as indicated below:
After turning power ON,
check the display for indications below and remove as follows:
[SQUELCH]: max. CCW
MODE
BANDWIDTH
INDICATION
DESCRIPTION
FM
12 kHz/6 dB
Amateur bands, citizens band, utility communications, marine bands,
etc. FM-narrow can only receive narrow FM signals; normal FM can
receive both normal and narrow FM signals.
AM
5.5 kHz/6 dB
Broadcasting, amateur bands, citizens band, air band, etc. AM-wide
mode is used for clear audio reception. Signals however, may be
received with interference.
SSB
2.2 kHz/6 dB
Shortwave broadcasting, amateur bands, etc. Use USB for normal
SSB reception; LSB is not normally used.
CW
2.2 kHz/6 dB
Morse code communications. Use this mode to receive radio-tele-
type, etc. by shifting the receive frequency.
WFM
150 kHz/6 dB
TV broadcasting, FM broadcasting, etc. TV and FM broadcasting
cannot be accessed in FM mode because their signals are too wide.
5.5 kHz/6 dB
normal
narrow
2.2 kHz/6 dB
medium
narrow
12 kHz/6 dB
wide
USB
LSB
normal
500 Hz/6 dB
narrow
(option)
The IC-R8500 has 2 types of squelch, noise squelch
and S-meter squelch.
Noise squelch: Only acts on noise; has good sensi-
tivity. It can be adjusted for reception of weak signals.
Strong signals exceeding a certain level will always
cause the squelch to open.
S-meter squelch: S-meter squelch does not open for
weak signals but can be adjusted to open for signals
over a wide range of strengths. Once you have
selected a threshold point in a range, the IC-R8500
will open for all signals above this point.
To adjust the squelch, rotate [SQUELCH].
Clockwise rotation closes the squelch (sets the threshold
point higher); counterclockwise rotation opens the
squelch (for reception of weak signals).
FM signals have a wide bandwidth which makes them
easy to receive. However, you may be tuned off-cen-
ter resulting in audio distortion. The IC-R8500s off-
center indicators appear in such cases, making it
easy to ne tune to the center of the frequency.
AFC stands for automatic frequency control. The AFC
circuit automatically compensates the tuning when a
receive frequency drifts or goes off frequency.
When one of the off-center indicators appears, the
IC-R8500 can adjust the receive frequency automat-
icallywhen the AFC function is turned ON and an
off-center frequency is received, the frequency in the
display automatically changes to reect the center of
the signal.
14
4
RECEIVE FUNCTIONS
Squelch function
Functions for FM
D Center indicator
S-meter squelch
threshold
Noise squelch
threshold (not
available in SSB,
CW, WFM and
AM narrow modes)
Signals below the
S-meter level
are muted.
When [SQUELCH] is
rotated past center,
the S-meter shows
the signal strength
needed to open the
squelch.
SIGNAL
S
13579
+
20dB
+
60dB
RECV
One of these indicators appears when the received
signal is off-center.
RECV
When one of these indicators appears, the
displayed frequency is automatically moved to the
center frequency.
AFC
D AFC
The IF shift function electronically changes the cen-
ter of the IF (intermediate frequency) passband fre-
quency to reject interference. The IF shift is not avail-
able in FM and AM modes.
q Adjust the [SHIFT] control for a minimum interfer-
ence signal level.
The audio tone may be changed while the IF shift is in
use.
w Set the shift control to its center position when
there is no interference.
Functions for SSB/CW
D IF shift
Shifts low Center Shifts high
IF SHIFTAPFIF SHIFTAPF IF SHIFTAPF
15
4
RECEIVE FUNCTIONS
The noise blanker reduces pulse-type noise such as
that generated by automobile ignition systems. This
function is not effective for FM and WFM mode or for
non pulse-type noise and wide width pulses.
Push [NB] to toggle the noise blanker ON and OFF.
•“NB appears when the noise blanker is activated.
NOTE: When a strong signal is received while the
noise blanker is ON, the output audio may be dis-
torted. In such cases, the noise blanker should be
turned OFF.
The APF (audio peak lter) adjusts the peak fre-
quency of the received audio. The APF can be used
for adjusting the audio response. The IC-R8500 has
two selectable width lters.* Use the appropriate lter
width for optimum receiving.
q Push the [APF] switch.
w Rotate the [APF] control to adjust the peak fre-
quency.
e To change the lter width*, push [APF] for 1 sec.
*Available for SSB, CW and AM only.
BFO stands for beat frequency oscillator. This func-
tion is useful in conjunction with the IF shift function.
When eliminating interference with the IF shift func-
tion, the audio characteristics of the received signal
are often changed. Use the BFO adjustment function
to adjust the audio quality of the received signal to
that desired.
q Push [SSB/CW] to select SSB or CW mode.
w Push [SSB/CW] for 1 sec. to activate the function.
BFO appears.
e Rotate [M-CH] to adjust the BFO.
•–1.2 kHz to +1.2 kHz are selectable.
AGC stands for automatic gain control. This function
controls receiver gain to produce a constant audio
output level even when the received signal strength
is varied by fading, etc. Use AGC slow for normal
phone operation; AGC fast for receiving data and
searching for signals. AGC time constant cannot be
changed in FM and WFM modes.
Push [AGC] to toggle between AGC fast and slow.
AGC-F appears when AGC fast is selected; no indi-
cator appears when AGC slow is selected.
D Noise blanker
D Audio peak lter
D BFO adjustment
D AGC function
BFO
0.00kHz
ICOM-
RECV
AGC-F
NB OFF NB ON
500 1k 2k 5k [Hz]
40
30
20
10
0
[dB]
500 1k 2k 5k [Hz]
40
30
20
10
0
[dB]
APF is selected APF-N is selected
[NB/AFC]
switch
SCAN SET
[APF] control
[APF]
switch
SCAN SET
[SSB/CW]
switch
SCAN SET
[M-CH]
selector
[AGC]
switch
SCAN SET
BFO shift can be set for USB,
LSB and CW separately.
TU or TNC
AF IN
SQUELCH IN
to [REC OUT]
to [REC REMOTE]
SCAN SET
2-conductor 3.5(d) plugs
Personal computer
16
4
RECEIVE FUNCTIONS
Data communications
D Connections
D Receiving method
To use the [AGC] socket for AF output
Change the internal jumper plug as illustrated at
right.
The output is obtained for FM mode only.
Usable for 9600 bps only.
Refer to p. 37 for a description of opening the case.
q Connect a terminal unit as above.
w Select FM mode (or USB, CW modes for HF band
data communications).
e Set the receiver to the desired frequency as below.
r Set the connected terminal unit to the appropriate
settings.
Refer to the terminal units instructions.
Rear
panel
TU or TNC
to [AGC]
RCA plug
Personal computer
[Audio IN] or
[Detector IN]
For high speed data (9600 bps) reception in FM mode
For regular speed data (1200 bps or lower) reception in any mode
Frequency settings depend on the mode used.
FM mode: [Setting frequency(displayed freq.)]=[Desired freq.]
USB mode: [Setting frequency(displayed freq.)]=[Desired freq.][Center of Mark and Space freq.]
CW narrow mode: [Setting frequency(displayed freq.)]=[Desired freq.][Center of Mark and Space freq.]+[600 Hz]
LSB mode (for amateur RTTY): [Setting frequency(displayed freq.)]=[Desired freq.]+ [Mark freq.]
AGC output
(default)
AF direct detector
output
200 mVrms/4.7 k
17
5
MEMORY CHANNELS
To select regular channel banks:
Push [M-CH BANK
] or [ENT BANK
], one or more
times to select the desired channel bank.
The bank indicator shows the selected bank.
Push and hold [BANK
] or [BANK
] to quickly cycle
through the channel banks in the order to , FREE,
AUTO and SKIP.
NOTE: The FREE bank is initially blank and there-
fore cannot be selected. In order to select it at least
1 channel must be programmed into the FREE
bank. See p. 21.
Convenient: Bank names
The default names of USR-A to USR-T can be set
to your own preference. Refer to p. 20 for program-
ming.
To select the programmed scan edge:
Push [PROG] for 1 sec.
PROG and channel number (0P1 to 9P2) appear.
Bank selection
The IC-R8500 has 1000 regular memory channels,
plus 20 programmable scan edge channels and 1 pri-
ority channel. 8-digit memory names are programmed
into all 1000 channels and 5-digit bank names are
programmed into 20 user banks for convenient recall
and organisation of frequencies. Moreover, memory
channels can store mode information, a tuning step,
and ATT (attenuation) information.
NOTE: When memory channels without informa-
tion (blank channels) are selected, the frequency
is not displayed. Only the memory channel num-
ber appears.
The table below gives a general overview of the
IC-R8500s memory channels.
BANK
INITIAL CONTENTS
USAGE
40 memories ×
20 banks
For normal use. Frequency, mode, tuning step, name and ATT information can
be programmed. The number of channels in each bank is user-assignable.
Banks cannot be deleted (they must contain at least 1 channel).
100 memories
Frequencies detected during auto memory write scan are memorised into this
bank in sequence. Mode and tuning step are written at the same time. Note that
when the written memories condition is set as CL&START and auto write scan
is started, all memories in this bank are cleared.
100 memories
Undesired signals such as from beacons, control-coded signals, etc., can be pro-
grammed to be skipped during programmed scan and auto memory write scan.
When [MW] is pushed for 1 sec. while scan is paused, the displayed frequency
is programmed into this bank regardless of the selected bank.
Blank
For temporary storage when assigning channels to banks. Deleted channels
(contents have been cleared) are stored in this bank until being assigned to
another bank. This bank does not appear when no channel are assigned.
20 memories (xed)
Memorize scan edge frequencies. 10 pairs of scan edges (0P1 to 9P2) are pro-
grammable (upper and lower scan edges). Mode and tuning step are automati-
cally equalised to the last programmed channel in a pair.
General
ENT
BANK
BANK
.
;
,
ENT
M-CH
BANK
BANK
BANK
BANK
USR-A BLANK
BLANK
BLANK
BLANK
USR-B
BANK
BLANK
USR-T
AUTO
BANK
BLANK
FREE
SKIP
*NONAME*
PROG
AUTO
SKIP
FREE
PROG
18
5
MEMORY CHANNELS
q Select the desired bank using [
M-CH BANK
] or
[ENT BANK
].
w Rotate the [M-CH] selector to select the desired
channel.
Bank limit function
While rotating the [M-CH] selector, memory channels
can be selected from within the current bank only; or
from any bank.
Push [BANK] to toggle the bank limit function ON and
OFF.
Convenient: Automatic bank limit
When starting memory scan, the bank limit function
is activated automatically. This automatic selection
can be deactivated. See p. 26.
Memory channels in the current bank can only be
selected via the keypad.
q Select the desired bank using [M-CH BANK
] or
[ENT
BANK
].
w Push keys corresponding to the desired channel.
e Push the [M-CH] key to set the selected memory
channel.
Input for memory channels not available is cancelled.
Channel selection
D Using the [M-CH] selector
D Using the keypad
[M-CH] selector
[BANK ]
[BANK ]
[M-CH] key
[EXAMPLE]: Selecting channel 39 from within the currently selected bank
BANK
M
USR-A
BANK appearsBANK doesn't
appear
BANK
M
USR-A
BANK
SR-
SR-
Bank limit OFF
All memory channels can be
selected via the [M-CH]
selector. [BANK
]
/[BANK
]
can be used.
Bank limit ON
Only memory channels in
the current bank can be se-
lected. Banks can be se-
lected with the
[BANK
]/[BANK
] keys
only.
USR-A ABCD USR-A ABCD USR-A EFGH
WXY
BANK
DEF
.
;
,
M-CH
9
3
[EXAMPLE]: Selecting channel 12 from a different bank (bank 3)
USR-A EFGH USR-D IJKL USR-D MNOP
BANK
.
;
,
M-CH
BANK
.
;
,
M-CH
1 QZ ABC2
(3 times)
19
5
MEMORY CHANNELS
Programming
This is the method most often used to program mem-
ory channels.
q Select the desired memory channel.
w Set the desired frequency.
When the memory channel already contains information,
change the frequency using the main dial or the keypad.
When the memory channel is blank, use keypad entry
only to set the frequency.
e
Set operating mode (p. 13) and tuning steps (p. 12).
r Push and hold [MW] until the receiver emits 3
beeps.
The information is stored in the memory channel.
NOTE: When changing the memory channel
before pushing [MW], the set frequency (and
mode/tuning steps) is erased.
Copy and paste (memory editing)
When the frequency (and mode/tuning steps) is set
for a channel; or, when you want to change a fre-
quency using the contents of another memory chan-
nel, the copy/paste function is helpful to keep (or con-
rm) the previously programmed contents.
q Push [M-SET] to temporarily store the displayed
frequency, mode, etc.
•“M appears.
Only 1 channel can be stored in the temporary space.
w Select the memory channel you wish to program
the frequency into.
e Push [M-SET] again to paste the stored contents.
•“M disappears.
NOTE: Remember that pushing [MW] is always
necessary to program contents into a memory
channel. Pasted contents will be cleared if the
[MW] key is not pushed for 1 sec.
Clearing
Information programmed into a memory channel can
be cleared (erased).
q Select the memory channel to be cleared.
w Push and hold [M-CL] until the receiver emits 3
beeps.
Convenient: Bank assign function
Using the bank assign function, memory channels
can be removed (along with their programmed con-
tents) from a particular memory bank and placed
temporarily in the free bank. See p. 21.
[MW] key
Push for 1 sec.
USR-A
USR-A
BLANK
MW
FM
OFF
kHz
DLY
FM
OFF
kHz
DLY
[M-SET] key
[M-CL] key
20
5
MEMORY CHANNELS
Channel/bank names
Channel names of up to 8 characters and bank names
of up to 5 characters can be programmed for conve-
nience. Programmed names can be easily copied to
other channels using the copy/paste function.
q Select the desired memory channel.
w Set the frequency (and mode/tuning steps), then
push and hold the [MW] key.
When no data is programmed, BLANK appears and
memory names cannot be programmed.
e Push [CE
NAME].
A cursor appears at the rst character space of the
name area.
r Enter the desired name via the keypad.
Push the appropriate keys to input the desired charac-
ters.
To erase a character, overwrite with a space using the
[
M-CH
] key.
To move the cursor forwards or backwards, use the [
]
or [CE
] key.
t Push [ENT] to input the set name.
q Select the desired bank using [M-CH BANK
] or
[ENT BANK
].
w Push [CE
NAME].
A cursor appears at the rst character space of the
name area.
When no data is programmed, (BLANK appears) the
cursor does not appear. Program a frequency or
change the channel in such cases.
e Push [
] to move the cursor to the bank name
area.
r Enter the desired name via the keypad.
Use the same method as for channel names (see
above).
t Push [ENT] to input the set name.
NOTE: When using [CE
] on the last digit of the
bank name, the current name is cleared and the
previous one is substituted. DO NOT forget to
push [ENT] after the bank name is set.
[CE
s
NAME] key
1 QZ
ENT
BANK
ENT
WXY
9
NAME
CE
to
USR-A
USR-A
USR-A MEMONAME
USR-A MEMONAME
D Channel name programming
D Bank name programming
USR-A
USR-A
USR-A MEMONAME
MEMONAME
MEMONAME
BANKN MEMONAME
BANKN MEMONAME
ENT
BANK
ENT
.
NAME
CE
5 times
1 QZ
WXY
9
to
21
5
MEMORY CHANNELS
Assigning channel numbers
The IC-R8500 has 20 banks in which memory chan-
nels can be programmed and arranged. By default,
each bank contains 40 memory channels, however,
channels can be deleted from or added (inserted) to
banks to suit your preferences and operating style.
Deleted channels are stored temporarily in the
FREE bank.
NOTE: When shipped from the factory or after
resetting the receivers CPU, the FREE bank has
no memory channels and cannot be selected.
To rearrange bank channel assignments:
q Delete memory channels from banks that have
more memory channels than you need.
Deleted channels are assigned to the free bank auto-
matically.
w Add (or insert) memory channels to banks in which
you want to add channels.
Channels added to a bank are deleted from the free
bank.
q Select the bank and memory channel you wish to
delete.
w Push [BANK] for 1 sec.
One of INS. 1CH, DEL. 1CH, ADD.10CH, or
ADD. 1CH,appears and ashes.
Push [BANK] momentarily to exit the condition and
return to the previous display, if desired.
e Rotate [M-CH] until DEL. 1CH appears in the
display.
r Push [BANK] for 1 sec. to delete the selected
channel.
The memory channel (but not its contents) is moved to
the FREE bank.
Memory channels can only be deleted one at a
time to prevent accidental deletion of multiple
channels; when you want to delete more than
one channel from a bank, repeat the above
steps as many times as necessary.
NOTE1: Deleted channels are moved to the
free bank, however, the programmed contents
are erased.
NOTE2: The number of banks cannot be
decreased. This means that if there is only one
channel in a bank, it cannot be moved to the
free bank.
D Deleting memory channels
[BANK] switch
[
M-CH] control
USR-T DEL. 1CH
BLANK
USR-T
BANK
BANK
BANK
(for 1 sec.)
The number of channels in this bank is
decreased.
USR-T BLANK
INS. 1CH
USR-T
BANK
BANK
BANK
M-CH
(for 1 sec.)
22
5
MEMORY CHANNELS
q Select the bank you wish to add memory chan-
nel(s) to.
w Push [BANK] for 1 sec.
One of INS. 1CH, DEL. 1CH, ADD.10CH, or
ADD. 1CH,appears and ashes.
Push [BANK] momentarily to exit the condition and
return to the previous display, if desired.
e Rotate [M-CH] to select the following:
r Push [BANK] for 1 sec. to perform the selected
operation.
The memory channel(s) are deleted from the FREE
bank and added/inserted to the selected bank.
Memory channels cannot be added/inserted into a
memory bank when the FREE bank is empty.
D Adding/inserting memory channels
USR-T BLANK
USR-T
BANK
BANK
INS. 1CH
USR-T
BANK
BLANK
Insert 1 channel
USR-T
BANK
ADD. 1CH
Add 1 channel
USR-T
BANK
ADD.10CH
Add 10 channels
USR-T
BANK
DEL. 1CH
Delete channel
(see opposite page)
BANK
M-CH
(for 1 sec.)
BANK
(for 1 sec.)
INDICATION DESCRIPTION
INS. 1CH
1 channel will be inserted in front of
the selected channel.
Programmed contents after the inserted
channel are shifted accordingly.
ADD. 1CH
1 channel will be added at the end of
the selected bank.
ADD.10CH
10 channels will be added at the end
of the selected bank.
Operation
D Memory scan
D Memory select scan
23
6
SCANS
All memory channels (except skip channels) in the
selected bank are scanned at up to 40 ch/sec.
q Push [M-CH
BANK
] or [ENT
BANK
] to select
the desired bank.
Direct selection is also available as below.
w Set the [SQUELCH] control to the threshold point.
e Push [MEMO] to start the scan.
•“MEMO appears in the bank name area.
r Push [MEMO] again to stop the scan.
Convenient:
Direct bank selectionMemory scan can be started
in a specic bank without using [BANK
/
]:
Enter one or two digits for the bank number, then
push [MEMO].
Bank selection during memory scanThe selected
bank can be changed without stopping the scan:
Enter one or two digits for the bank number, then
push [ENT].
Bank limit and skip scan releaseWhen starting
memory scan, the bank limit and channel skip functions
are activated automatically. Refer to p. 26.
Memory select scan allows you to increase scan ef-
ciency by searching for specied channels only,
thereby increasing the rate at which the scan cycles
through the memory channels. Set high priority chan-
nels as select channels (memory select scan
searches for signals on these channels) while leaving
out lower priority channels.
Preparationspecifying select channels:
Select the channel you want to specify as a select
channel, then push [SEL] for 1 sec.
Start/stop:
q Select the desired bank using [
M-CH BANK
] or
[
ENT BANK
].
w Set the squelch control to the threshold point.
e Push [SEL] momentarily to start scan.
•“SEL appears in the bank name area.
r Push [SEL] again to stop the scan.
NOTE: Memory select scan does not start unless
2 or more channels in the bank are specied as
select channels.
Convenient:
The same convenient functions are available as de-
scribed above.
Mch 1
Mch 2
Mch 3
Mch 4
Mch 5
Mch 6
Mch 7
Mch 39
Skip
Select
Select
Select
Select
Push [MEMO]
FM
OFF
kHz
DLY
MEMO
MEMO appears
Push [SEL]
FM
OFF
kHz
DLY
SEL
SEL appears
Mch 1
Mch 2
Mch 3
Mch 4
Mch 5
Mch 6
Mch 7
Mch 39
Skip
Select
Select
Select
Select
Select
24
6
SCANS
D Programmed scan
D Auto memory write scan
Programmed scan (and auto memory write scan)
searches for signals within a specied frequency
range, using the selected tuning step increments. The
result is like an automatic rotating of the main dial.
Preparationsetting the scan range:
Push and hold [PROG] to enter the prog bank, then
input the desired edge frequencies, mode and tuning
steps. Refer to p. 27 for details.
Start/stop:
q Set the [SQUELCH] control to the threshold point.
w Push [PROG] to start the scan.
•“PROG (and scan range number) appears in the bank
name area.
e Push [PROG] again to stop the scan.
Convenient:
Direct range selectionThe desired programmed
scan range can be selected using the keypad.
Push a numeral key before or after pushing the
[PROG] key.
Skip scan releaseProgrammed scan skips all fre-
quencies specied as skip channels in all 1000 chan-
nels.
Auto memory write scan operates in the same way
as programmed scan. However, when a signal is
received, the received frequency is automatically
written into a memory channel in the auto write bank.
Preparationwritten memories condition:
Push and hold [AUTO] to enter the written memory
setting condition, then rotate the main dial to select
the condition.
: Previously written memories
in the Auto bank are saved, then frequencies are
written into the next available channels.
: Previously written mem-
ories in the Auto bank are cleared, then frequencies
are written into channels, starting from channel 0.
Start/stop:
q Set the [SQUELCH] control to the threshold point.
w Push [AUTO] momentarily or for 1 sec. to start the
scan.
CAUTION: Be sure the written memories condition is set
as desired, otherwise previously written memories are
cleared.
•“AUTO (and scan range number) appear in the bank
name area.
e Push [AUTO] again to stop the scan.
Convenient:
The same convenient functions are available as de-
scribed above.
Programmed edges
Push [PROG]
FM
OFF
kHz
DLY
PROG0 *NONAME*
PROG appears
AUTO bank
0
1
2
3
4
98
99
1234.567.00
1235.678.00
1235.890.00
1240.050.00
---------------
---------------
Push [AUTO]
FM
OFF
kHz
DLY
AUTO0 *NONAME*
AUTO appears
AUTO START
AUTO CL&START
25
6
SCANS
D Priority scan
Priority scan monitors a specied frequency (the pri-
ority channel) once every 116 sec. (programmable)
during any operation, such as receiving, scanning
other channels, etc.
Preparationpriority channel programming:
q Push [PRIO] for 1 sec.
•“*SET* appears in the bank name area, then
changes to a ashing PRIO.
Using this method, the priority channel can be called up
at any time with one push.
w
Set the desired frequency, mode and memory
name.
e Push [MW] for 1 sec. to write the contents into the
priority channel.
r Push [PRIO] again to return to the previous chan-
nel.
Start/stop:
Push [PRIO] to start/stop the scan.
Priority scan can be used in combination with other scan
types: start another scan type during priority scan; or,
push [PRIO] while operating another scan.
To operate memory scan or memory select scan in a
specic mode (ignoring other modes), the mode
select function is available.
q Push [MEMO] or [SEL] to start memory scan or
memory select scan, respectively.
w Select the desired mode to operate the scan in via
the mode switches.
The mode select function is applied to memory or mem-
ory select scan.
e Push [MEMO] or [SEL] again to stop the scan.
Priority scan
Programmed scan with priority scan
Mode select function
Specifying skip channels
q Select the memory channel to be specied as a
skip channel.
w Push [SKIP] for 1 sec. to toggle the setting ON and
OFF.
SKIP-CH appears when skip is set.
Programming skip frequencies
(for programmed scan)
q Start programmed scan.
w When the scan pauses on an undesired signal,
push [MW] for 1 sec.
The frequency is memorised into the skip bank as a
skip frequency.
The specified channel is skipped during memory and
memory select scans.
The programmed frequency is skipped during pro-
grammed and auto memory write scans.
Specifying skip channel and frequency
ICOM IC-R8500
SKIP-CH
SKIP
kHz
The channel is specified as a skip channel.
Push [MW] for 1 sec. while programmed scan pauses.
PROG0 IC-R8500
RECV
OFF DLY
Mch 1
Mch 2
Mch 3
Mch 4
Mch 5
Mch 6
Mch 7
Mch 39
Skip
Select
FM
FM
WFM
USB
USB
USB
AM
USB
Select
Select
Select
26
6
SCANS
Automatic bank limit/skip functions
When starting a scan, the following functions are
automatically turned ON by default; and the [SKIP]
and [BANK] switches are deactivated during scan.
The bank limit function (for memory scan and select
memory scan)The memory scan operates within
the selected bank only.
Turning OFF the automatic function
q Push [MEMO] for 1 sec.
A display as at right appears.
w Rotate the [M-CH] selector to
select the item, SKIP or
BANK.
e Rotate the main dial to select
the function AUTO or MANU-
AL.
r Push [MEMO] to return to the
previous display.
SKIP AUTO
SKIP MANUAL
BANK AUTO
BANK MANUAL
The skip function is turned ON automatical-
ly at scan start.
[SKIP] does not function during scan.
The bank limit function is turned ON au-
tomatically at scan start.
[BANK] does not function during scan.
The scan skip function is turned ON and
OFF by [SKIP] regardless of scan start.
The bank limit function is turned ON and
OFF by [BANK] regardless of scan start.
Voice scan control function
This function is useful when you dont want unmodu-
lated signals pausing or cancelling a scan. When
activated, the receiver checks received signals for
voice components.
If a receiver signal includes voice components, and
the tone of the voice components changes within 1
sec., scan pauses (or stops). If the received signal
includes no voice components or the tone of the
voice components does not change within 1 sec.,
scan resumes.
To toggle the function ON and OFF, push [VSC].
•“VSC appears while it is activated.
The VSC function activates for any scan.
The VSC function resumes the scan on unmod-
ulated signals even when the resume condition is
set to OFF or
.
Scan edge 1
Scan
Skip
Scan pauses or is
cancelled.
Unmodulated
signal
Modulated
signal
Scan edge 2
FM VSC
OFF
kHz
DLY
ICOM- IC-R8500
VSC appears
The skip function (for any scan except priority
scan)memory channels specied as skip chan-
nels are not checked during memory scan and
select memory scan; the frequencies which are pro-
grammed into memory channels as skip channels
(not only in the skip bank but any memory chan-
nels) during programmed scan and auto memory
write scan.
27
6
SCANS
Programming scan edge frequencies
A set of scan edge frequencies must be programmed
before starting the programmed or auto memory
write scans. 10 pairs of scan edges are available:
0P1 to 9P2.
q Push [PROG] for 1 sec.
•“*SET* appears in the bank name area, then
changes to a ashing PROG.
w Rotate the [M-CH] selector to select the lower
scan edge in a pair e.g. 0P1.
The keypad can also be used for selection.
e Set the frequency, mode, tuning step and memory
name then push [MW] for 1 sec. to program one of
the scan edges.
r Rotate the [M-CH] selector to select the other
edge in the pair e.g. 0P2.
t
Set the frequency then push [MW] for 1 sec. to program.
Mode, tuning step and name are common to both scan edges.
y
Push [PROG] momentarily to return to the previous
channel; or repeat w to y for other scan edges.
Scan pauses when nding a signal, and then resumes
or is cancelled depending on the selected scan
resume condition. There are 3 resume conditions.
Push [DLY] one or more times to select a resume
condition.
Scan resume OFF
Scan pauses until signal disap-
pears, then resumes 3 sec. after
that.
Scan resume ON with adjusted
delay period
Scan pauses for the adjusted
delay period after receiving a signal, then resumes.
When the received signal disappears, scan resumes
approx. 3 sec. after that.
Scan cancel
Scan is cancelled when a signal
is found during scan.
Scan speed/delay functions
D Scan resume condition
Signal
no signal
scanning scanningpausing
3 sec.
receiving a signal no signal
Scan
[ ]
switch
OFF DLY
DLY
D/S
OFF DLY
Signal
no signal
scanning scanning
pausing
delay time
receiving a signal no signal
Scan
OFF DLY
Signal
no signal
scanning
scan is cancelled
receiving a signal no signal
Scan
OFF DLY
[ ]
switch
PROG
[MW] switch [M-CH] selector
AM
BANK
OFF
kHz
DLY
PROG
*NONAME*
AM
BANK
OFF
kHz
DLY
PROG
*NONAME*
28
6
SCANS
When scan speed is assigned to the [DELAY/SPEED]
control (see above), the scan speed can be instantly
updated during scan operation.
The name area shows as at right for 1 sec. after
rotating the control.
When scan delay time is assigned to the
[DELAY/SPEED] control, the scan speed is xed
at the maximum of 40 ch/sec.
Highest scan speed: 40 ch/sec.
Lowest scan speed: 1 ch/sec.
SPEED
SPEED
DELAY/SPEED
DELAY/SPEED
The [DELAY/SPEED] control adjusts the scan delay
period (scan resume period) when:
The scan delay function is assigned to the
[DELAY/SPEED] control (see above).
•“DLY is selected for the scan resume condition with
the [DLY ] switch.
When scan speed is assigned to the
[DELAY/SPEED] control, the scan delay is deter-
mined by the set value of 3 to 18 sec.
D Scan delay
Longest delay time: 18 sec.
Shortest delay time: 3 sec.
DELAY
DELAY
DELAY/SPEED
DELAY/SPEED
The function of the [DELAY/SPEED] control is selec-
table, as shown below, to suit your operating style.
q Push [DLY ] for 1 sec. to enter the setting con-
dition.
w Rotate the main dial to select the function for the
[DELAY/SPEED] control.
e When the scan speed is assigned to the
[DELAY/SPEED] control, the scan delay time is
determined while VR:SPD DLY: 3S appears.
Rotate the [M-CH] selector to set the delay time.
r Push [DLY ] to return to the previous display.
D Assigning a function to the [DELAY/SPEED] control
Scan speed is assigned to the [DELAY/SPEED] control
Toggle via the
main dial
Adjustable
via the [M-CH]
selector
Scan delay is assigned to the [DELAY/SPEED] control
VR:SPD
DLY= 3S
VR:DLY
SPD=MAX
D Scan speed
The IC-R8500 has a sleep timer function to automati-
cally turn the power OFF after a specied period.
D Operation
q
Push [SLEEP/
]
momentarily, several times, to
activate the sleep timer and set the power OFF period.
When the sleep timer is activated, appears in
the display.
5 settings are available: 120, 90, 60, 30 min. and sleep
OFF.
w 2 sec. after performing step q above, the receiver
returns to the previous display.
e To conrm the set sleep period, push
[SLEEP/
]
momentarily, one time.
Be careful not to push the switch more than once, other-
wise the sleep period may be changed.
r To turn ON the receiver after the sleep timer has
turned power OFF, push [POWER] OFF then ON
again.
The sleep timer is cancelled.
29
7
SLEEP TIMER
[SLEEP/ ] switch
SET
SLEEP
IC-R8500ICOM
SLEEP
Minutes
Minutes
Each push of
SLEEP/
SET
SLEEP/
SET
after 2 sec.
Previous display
Set time
Push once
kHz
SLEEP
Minutes
SLEEP
30
8
SET MODE
General
Set mode is used for programming infrequently
changed values or conditions of functions. The
IC-R8500 has 2 separate set modes: quick set mode
and initial set mode.
D Selecting quick set mode
q Push
[SLEEP/
] for 1 sec.
Quick set mode is selected and one of its items appears.
w Rotate the [M-CH] control to select the desired item.
e Rotate the main dial to set the values or conditions
for the selected item.
r Repeat steps w and e to set other items.
t To exit quick set mode, push
[SLEEP/
] again.
Pushing any other switch will also exit quick set mode.
D Selecting initial set mode
q Push [POWER] to turn power OFF.
w While pushing
[SLEEP/
] push [POWER] to turn
power ON.
Initial set mode is selected and one of its items appears.
e Rotate the [M-CH] control to select the desired item.
r Rotate the main dial to set the values or conditions
for the selected item.
t Repeat steps e and r to set other items.
y To exit initial set mode, push [POWER] to turn
power OFF.
u Push [POWER] to turn power ON again.
The conditions selected in initial set mode are now effec-
tive.
SCAN SET
Main dial (for contents)
[SLEEP/ ]
(push for 1 sec.)
[M-CH]
(for items)
SET
SCAN SET
[POWER] Main dial (for contents)
[SLEEP/ ] at power ON [M-CH]
(for items)
SET
WFM
OFF
kHz
DLY
HIGH
DIMMER
Item number
Item
Value or
condition
[DISPLAY EXAMPLE: QUICK SET MODE]
ON
REC REMO
Item number
Item
Value or
condition
[DISPLAY EXAMPLE: INITIAL SET MODE]
31
8
SET MODE
Quick set mode items
Initial set mode items
DIMMER
This item toggles the intensity of the display back-
lighting between high or low.
Bright backlighting
(default).
HIGH
Dark backlighting.
LOW
BEEP
A beep sounds each time a switch is pushed for con-
rmation. This function can be turned OFF for silent
operation.
Confirmation beeps
ON (default).
ON
Confirmation beeps
OFF.
OFF
LOCK
This item sets the lock function to electronically lock
the main dial only or both the main dial and the panel
switches.
Only the main dial
can be locked (default).
DIAL
Both the main dial and panel
switches can be locked.
PANEL
AUTO TS
This item sets the auto tuning speed. The main dial
normally changes the frequency [400] × [tuning step]/
revolution. When auto tuning speed is turned on this
increases to [2000] × [tuning step]/revolution during
quick rotation of the dial.
The auto tuning speed
function is ON (default).
ON
The auto tuning speed
function is OFF.
OFF
HF ANT
This item sets the active HF antenna connector on
the rear panel. Either the 50 (SO-239 coaxial) or
500 (phono RCA connector) can be activated.
The SO-239 antenna con-
nector is activated (default).
50
The RCA (phono) connector
is activated.
500
REC REMO
This item activates/deactivates the REC REMOTE
jack on the front panel. When ON is selected, the
[REC REMOTE] jack is at a low level when the
squelch opens via the internal relay.
The REC REMOTE jack
can be used (default).
ON
The REC REMOTE jack has
no function and no relay
switching sound is heard.
OFF
REC SPCH
When the optional UT-102
VOICE SYNTHESIZER
is
installed and scan is in use, the detected frequency
is announced each time scan pauses, regardless of
the [SPCH/LOCK] switch. This announcement can
be turned ON and OFF.
The detected frequency is
announced when scan
pauses (default).
ON
The optional voice synthe-
sizer activates via the
[SPCH] switch only.
OFF
32
8
SET MODE
SPCH LAN
When the optional UT-102
VOICE SYNTHESIZER UNIT
is
installed, you can select between English and
Japanese as the language.
Voice synthesizer functions
in English (default).
ENG
Voice synthesizer functions
in Japanese.
JPN
SPCH SPD
When the optional UT-102
VOICE SYNTHESIZER UNIT
is
installed, you can select between faster or slower
synthesizer output.
Voice synthesizer output
is faster (default).
FAST
Voice synthesizer output
is slower.
SLOW
CIV ADDR
To distinguish equipment, each CI-V transceiver/receiv-
er has its own Icom standard address in hexadecimal
code. The IC-R8500s address is 4AH.
When 2 or more IC-R8500s are connected to an
optional CT-17
CI
-
V LEVEL CONVERTER
, rotate the
main dial to select a different address for each IC-
R8500 in the range 01H to 7FH.
Address set to 4AH
(default).
4AH
Address set to 01H.
01H
CIV BAUD
This item sets the data transfer rate. When AUTO
is selected, baud rate is automatically set according
to the connected controller or other Icom CI-V radio.
Auto baud rate
(default).
AUTO
19200 bps
19200
CIV TRAN
Transceive operation is possible with the IC-R8500
connected to an Icom CI-V radio. When ON is
selected, changing the frequency, operating mode,
etc. on the IC-R8500 automatically changes those of
connected radios and vice versa.
Transceive ON
(default).
ON
Transceive OFF.
OFF
CIV 731
When connecting the IC-R8500 to the IC-735 for
transceive operation, you must change the operating
frequency data length to 4 bytes.
This item must be set to ON only when operating trans-
ceive with the IC-735.
Frequency data set to
5 bytes (default).
OFF
Frequency data set to
4 bytes.
ON
33
9
CONNECTOR INFORMATION
D RS-232C socket
D Remote jack
D IF OUT jack
D AGC OUT jack
D External speaker
Pin Port name Description
1
GND Grounded.
2 RXD Input port for CI-V format data; +12V/12V.
3 TXD Output port for CI-V format data; +12V/12V.
4
5
RTS
CTS
Shorten these ports inside.
Can be connected to pin 8 (DCD) via the inter-
nal circuit board (coffee beans).
6 DSR
NC; can be connected to pin 20 (DTR) via the
internal circuit board (coffee beans).
7 GND Grounded.
8 DCD
NC; can be connected to pins 4 and 5 (RTS/CTS)
via the internal circuit board (coffee beans).
919 NC No connection.
20 DTR
NC; can be connected to pin 6 (DSR) via the
internal circuit board (coffee beans).
2125 NC No connection.
13 1
25 14
Pin Port name Description
Inner REMOTE Input/output port for CI-V format data; +5 V/0 V.
Outer GND Grounded.
Pin Port name Description
Inner IF OUT
Frequency: 10.7 MHz
Output level: 60 dBm (with 50 dBm input from
an antenna connector in WFM mode)
Outer GND Grounded.
*Output is selectable with an internal jumper pin (p. 16).
Pin
Port name Description
Inner*
AGC out
Output voltage: 1 to 2.4 V DC
(signal strength weak to strong)
Output impedance: 2.2 M
Audio detect
Output level: 200 mV rms
(at Mod.=1 kHz, Dev.=3.5 kHz)
Output impedance: 4.7 k
Before the frequency de-emphasis stage.
Usable for FM only (not including WFM).
Outer GND Grounded.
Pin Port name Description
Inner AF out
Output level: More than 2 W
Output impedance: 48
Outer GND Grounded.
3.5 mm (diam.) 2-conductor
Outer
Inner
RCA (phono) jack
Inner
Outer
RCA (phono) jack
Inner
Outer
3.5 mm (diam.) 2-conductor
Outer
Inner
34
9
CONNECTOR INFORMATION
D DC 13.8 V and DC IN sockets
D REC REMOTE jack
DC IN
DC 13.8 V
DC 13.8 V
Inner
Outer
[POWER]
switch
Receiver
circuit
Internal
regulator
circuit
DC IN
41
Pin Port name Description
Inner DC IN Accepts connection to the AD-55A/V only
Outer GND Grounded.
Pin Port name Description
1 13.8 IN 13.8 V DC input; current consumption 2 A
2 12.5 OUT
12.5 V DC output when connecting AD-55/A/V
to [DC IN] socket. Max. 2 A
3 NC
4 GND Grounded.
Pin Port name Description
Inner SQL
Grounded when squelch opens.
Can be deactivated via initial set mode. (p. 31)
Max. current: 1 A/12 V DC
Outer GND
Pin Port name Description
Inner DET
Output detected audio output.
100300 mV rms/4.7 k
Outer GND Grounded.
Pin Port name Description
Inner,
Middle
Audio
Outputs audio.
Output impedance: 416
Outer GND Grounded.
3.5 mm (diam.) 2-conductor
Outer
Inner
D REC OUT jack
3.5 mm (diam.) 2-conductor
Outer
Inner
D PHONES jack
6 mm (diam.) 3-conductor
Middle
Inner
Outer
CONTROL COMMANDS
10
35
The IC-R8500 can be connected to a PC via the PCs
RS-232C port. This allows you to control the receiver
from the PC and/or transfer data from the receiver to
the PC.
Operation Cn Sc Remark
Reading freq. edges
Reading operating freq.
Reading operating mode
02
03
04
Reading M-ch contents package
Reading bank name
1A
1A
01
03
add bn+mc*
add bn*
Reading squelch condition
Reading S-meter level
Reading model ID
15
19
01
02
00
05 add fd*
Set operating
mode
06
0001
0101
0202
0201
0203
0301
0302
0501
0502
0601
Memory channel selection
Bank selection
Memory write
08
08
09
A0
mc*
bn*
Set M-ch contents & write package
Set bank name
Memory clear
1A
1A
0B
00
02
add dt*
add bn+nd*
Stop scan
0E
00
Programmed scan start
Auto memory write scan start
02
04
note 1
note 1
Memory scan start
Select memory scan start
Mode select scan start
22
23
24
note 2
note 2
note 2
Priority scan 42
SEL-CH release
SEL-CH tag
B0
B1
VSC deactivation
VSC activation
C0
C1
Scan resume selection
Scan resume selection OFF
Scan resume selection DLY
D0
D1
D3
LSB
USB
AM
AM narrow
AM wide
CW
CW narrow
FM
FM narrow
WFM
Operation Cn Sc Remark
Tuning step 10
00
01
02
03
04
05
06
07
08
09
10
11
12
13
11
00
10
20
30
13 00
01
03
04
05
add gd*
add gd*
add gd*
add gd*
Memory clear 16
10
11
20
21
30
31
Power OFF (activating sleep)
Power ON (from sleep active)
18
00
01
1 MHz
programmable
OFF
10 dB
20 dB
30 dB
frequency
10 Hz
50 Hz
100 Hz
1 kHz
2.5 kHz
5 kHz
9 kHz
10 kHz
12.5 kHz
20 kHz
25 kHz
100 kHz
Voice
synthesizer
Attenuator
AF gain setting
Squelch level setting
IF shift setting
APF control setting
14
AGC OFF
AGC ON
APF OFF
APF ON
NB OFF
NB ON
Note 1: Only scan group 0 is usable.
Note 2: Use these commands after sending a bank or mode
command.
Set frequency
Command table
FE FE 4A E0 Cn Sc Data area (e.g. fd) FD
Preamble code (fixed)
PCs address
IC-R8500s address
(selectable in set mode)
Command number
(see table)
Sub command number
(see table)
BCD code area
(REMARK in table)
End of message code
FE FE E0 4A Cn Sc Data area (e.g. fd) FD
Preamble code (fixed)
PCs address
IC-R8500s address
(selectable in set mode)
Command number
Sub command number
BCD code area
End of message code
Data format
Basic format from PC to IC-R8500 Answer from IC-R8500 to PC
36
10
COMMAND LIST
•‘OK message from IC-R8500 to PC •‘NG message from IC-R8500 to PC
Memory channel contents set & write (1A 00)
The above data packet is an example of programming
the following into memory channel 123 of bank num-
ber 19:
Frequency: 1,234,567,890 Hz
Mode: FM
Tuning step: 199.5 kHz (programmable step)
Attenuator: 10 dB
Scan select: specied
Scan skip: specied
Memory name: IC-R8500
Scan skip and select channels
FE FE E0 4A FB FD
Preamble code
PCs address
IC-R8500s address
OK code
End of message code
FE FE 4A E0 1A 00 1901239078563412050113951910034943205238353030 FD
Memory name
Tuning step
Mode(Sc)
FrequencyCH no.
Bank
SCN
ATT
Preamble code
IC-R8500s address
PCs address
Command number
Sub command
(IC-R8500s command)
10 Hz
1 Hz
1 kHz
100 Hz
100 kHz
10 kHz
10 MHz
1 MHz
1 GHz
100 MHz
End of message code
ASCII code
BCD code area
(only needed when 13
is selected)
IC-R8500
FE FE E0 4A FA FD
Preamble code
PCs address
IC-R8500s address
NG code
End of message code
Comment
number
Scan select Scan skip
00 OFF OFF
01 OFF Specied
02 Specied OFF
03 Specied Specied
Clearing the specied channel data
(Memory channel contents set & write)
Special bank number and channels (bn)
FE FE 4A E0 1A 00 19 0 1 2 3 FF FD
Preamble code
PCs address
IC-R8500s address
Command number
End of message code
Blank data
Memory channel
number
IC-R8500s command
Bank number
Special bank Bank number
FREE
20
AUTO
21
SKIP
22
PROG
23
PRIO
24
Remarks
For programmed
scan, channel num-
bers are as follows:
0P1=00, 0P2=01,
1P1=02, 1P2=03,
etc., up to 9P1=18
and 9P2=19.
There is only one
channel in the prior-
ity bank.
Gain and level data (gd; BCD data)
AF GAIN
SQUELCH
Max.
counterclockwise
0000
Max.
clockwise
0255
IF SHIFT
APF control
Max.
counterclockwise
0000
Max.
clockwise
0255
center
0128
Disassembly
Fuse replacement
If a fuse blows or the receiver stops functioning, try to
nd the source of the problem, and replace the dam-
aged fuse with a new, rated fuse.
Level adjustments
3 A FGB
For DC cable fuse For internal fuse
37
11
MAINTENANCE
Memory backup
All of the CPUs memory is backed up by an EEP-
ROM (Electronically-Erasable Programmable Read-
Only Memory). All data you set, such as memory con-
tents, set mode contents, etc. is stored in this EEP-
ROM. There is no internal lithium battery.
CPU resetting
If the IC-R8500 is behaving erratically, this may be an
indication of a CPU malfunction. In such cases, reset
the CPU.
While pushing [MW], push [POWER] in to turn on the
receiver power.
The CPU is reset.
NOTE: Resetting the CPU clears all memory con-
tents and returns internal settings to their factory
defaults.
Cleaning
If the receiver becomes dusty or dirty, wipe it clean
with a dry, soft cloth.
AVOID the use of strong chemical solvents such as
thinner, benzine or alcohol to clean the
receiver. These may damage the receivers
surfaces.
For internal maintenance and optional installations,
disassemble the receiver.
q Remove 6 screws from the top of the receiver and
4 screws from its sides.
w Carefully lift up the top cover while disconnecting
the plug from the speaker cable.
e Turn the receiver upside down.
r Remove 6 screws from the bottom cover, then lift
up the bottom cover.
Speaker
cable
MAIN unit
Fuse
(FGMB 125 V 3 A)
CAUTION: DISCONNECT the DC power cable
or AC adapter before performing any work on the
receiver.
R254
R252
R252 adjusts the beep level
R254 adjusts the UT-102 output level
38
12
OPTIONAL INSTALLATIONS
UT-102
VOICE SYNTHESIZER UNIT
The UT-102 announces the accessed frequency in a
clear, electronically generated voice, in English (or
Japanese) when pushing [SPCH] or when a signal is
detected during scan (see p. 31, 32 for settings).
q Remove the top cover as shown opposite.
w Remove the protected paper attached to the bot-
tom of the UT-102 to expose the adhesive strip.
e Connect the UT-102 as shown in the diagram at
right.
r Replace the top cover.
J12
UT-102
FL-52A
CW NARROW FILTER
The IC-R8500 has a CW narrow mode which pro-
vides better S/N (signal-to-noise) and also rejects
nearby interference. The CW narrow lter is helpful
when receiving CW and radio-teletype signals.
q Remove the top cover as shown opposite.
w Connect the FL-52A as shown in the diagram at
right.
Make sure it is connected in the proper orientation.
Attached nuts on the FL-52A are not necessary. If you
want to install the lter more securely, open the MAIN
unit, then use the nuts on the bottom of the MAIN unit.
e Replace the top cover.
FL-52A
Under the top cover
Under the top cover
39
12
OPTIONAL INSTALLATIONS
CR-293
HIGH STABILITY CRYSTAL UNIT
A temperature-compensating crystal with a stability of
±3 ppm is built-in to the receiver. For more demand-
ing operation, the CR-293
HIGH STABILITY CRYSTAL
UNIT
is available. It has a stability of ±0.5 ppm.
q Remove the bottom cover as shown on p. 37.
w Remove 6 screws from the metal plate, then
remove the metal plate and shield cover.
e Remove 10 screws from the PLL unit, then open
the unit to expose the bottom.
r Unsolder the feet of the internal crystal unit, then
remove it.
t Place the CR-293 in the space available as shown
in the diagram, then solder its feet into place (6
points).
y Adjust the reference frequency using a frequency
counter.
u Replace the ground spring to its original position.
i Return the shield cover, metal plate and bottom
cover to their original positions.
NOTE: The CR-293 is an oven-type crystal unit,
and the specied frequency stability described
above is guaranteed 1 min. after power ON.
Shield
cover
PLL unit
Ground
spring
PLL unit
CR-293
Internal
crystal
unit
Metal plate
13
TROUBLESHOOTING
40
The following chart is designed to help you correct
problems which are not equipment malfunctions. If
you are unable to locate the cause of a problem or
solve it through the use of this chart, contact your
nearest Icom Dealer or Service Center.
POSSIBLE CAUSE SOLUTION REF.
POWER
DC power cable is improperly con-
nected.
A fuse is blown.
During AC adapter operation, the
jumper connector is not in use.
External 12 V DC is connected to the
[DC IN] jack.
Reconnect the DC power cable se-
curely.
Check for the cause, then replace the
fuse with a spare one.
Connect the jumper connector to the
[DC13.8V] jack on the receivers rear panel.
Connect the external power source to
the [DC13.8V] jack. The [DC IN] jack ac-
cepts an AC adapter (AD-55/A/V) only.
p. 8
p. 37
p. 8
p. 8
RECEIVE FUNCTIONS
Volume level is too low.
The squelch is closed.
An external speaker or headphones are
connected.
CW narrow mode is selected when no
optional lter is installed.
Rotate [AF GAIN] clockwise to obtain a
suitable listening level.
Rotate [SQUELCH] counterclockwise to
open the squelch.
Disconnect the external speaker or
headphones.
Select another mode or install the op-
tional CW narrow lter.
p. 14
pgs.
13, 38
The coaxial cable is cut.
No antenna is connected.
The connected antenna is not matched
to the receive frequency.
Wrong antenna connector is used for
V/UHF and HF antenna.
Wrong antenna connector is selected in
set mode for HF antenna.
An RF attenuator is activated.
Fix the coaxial cable.
Connect an antenna.
Connect an antenna matched to the re-
ceiving frequency.
Check the antenna connection.
Select the proper antenna connector:
SO-239 or phono (RCA).
Push [ATT 10 dB] or [ATT 20 dB] to can-
cel the function.
p. 8
p. 8
p. 8
p. 31
[IF SHIFT] is rotated too far CCW or
CW.
[APF] is rotated too far CCW or CW.
The wrong mode switch is pushed.
Set [IF SHIFT] to the center position.
Set the [APF] control to the center position
or push the [APF] switch to turn it OFF.
Push the correct mode switch.
p. 14
p. 15
p. 13
The operating frequency is lower than
30 MHz. (WFM mode cannot be se-
lected below 30 MHz.)
Set the frequency above 30 MHz when
in WFM mode.
p. 13
FRONT PANEL CONTROL
The lock function is activated. Push [LOCK] for 1 sec. to deactivate. p. 12
DIAL LOCK is selected in quick set
mode.
Select PANEL LOCK in quick set
mode.
p. 31
PROBLEM
Power does not turn
ON when [POWER] is
pushed in.
No sound comes from
the speaker.
Sensitivity is low.
Receive signal is un-
clear or distorted.
WFM mode cannot be
set.
Main dial does not func-
tion.
[LOCK] does not lock
the keypad, function
switches, etc.
The memory channel was changed be-
fore writing into memory.
Push [MW] for 1 sec. to write into a
memory before changing channels.
p. 19The selected frequency
is erased.
An optional UT-102
VOICE SYNTHESIZER
UNIT
is not installed.
Install the UT-102. p. 38The frequency is not
announced when push-
ing [SPCH].
The sleep timer has been activated. Turn power back ON, then push
[SLEEP] one or more times to turn the
sleep timer function OFF, if desired.
p. 29Receiver turns OFF by
itself.
13
TROUBLESHOOTING
41
MEMORY CHANNELS
The bank limit function is activated and
BANK is indicated.
Push [BANK] to turn OFF the bank limit
function or use [BANK] or [BANK] to se-
lect the bank.
p. 18Memory channels in
another bank cannot be
selected.
SCAN
[SQUELCH] is open and [] is selected. Turn [SQUELCH] CW until noise disap-
pears.
p. 14No scan will function.
The same frequencies are programmed
into the selected scanning group.
Reprogram different frequencies into
scan edge channels or select a different
programmed scan group.
p. 27Programmed scan and
auto memory write scan
does not function.
All channels are specified as SKIP
channels in the selected bank.
No memory channels have yet been
programmed in the selected bank.
Turn OFF the automatic skip function or
release the SKIP setting for 2 or more
channels in the selected bank.
Program 2 or more channels in the se-
lected bank.
pgs.
25, 26
p. 19
Memory scan does not
function.
Two or more SEL-CH are not specied
in the selected bank.
Set 2 or more channels as SEL-CH in
the selected bank.
p. 23Select memory scan
does not function.
All channels in the auto memory bank
have been programmed.
Erase some or all of the channels in the
auto write bank.
p. 24Auto memory write
scan does not function.
The AFC function is activated and an
off-center signal is received in FM or
WFM mode.
Push [AFC] to turn the AFC function
OFF or wait until the center frequency is
selected.
p. 14Scan starts automati-
cally.
Written memories condition is set as
CL&START.
Change the setting to START.
p. 24Memory channels in the
AUTO bank are
cleared.
[CE
s
] is pushed on the final name
character.
Push [ENT] after setting the name. p. 20Bank name is erased
after setting.
A frequency has not yet been pro-
grammed into the memory channel.
[MW] key is used for name programming.
Push [MW] for 1 sec. in advance.
Push [ENT] after setting the name.
p. 19
p. 20
Memory name cannot
be written.
POSSIBLE CAUSE SOLUTION REF.PROBLEM
14
SPECIFICATIONS
42
General
Frequency coverage :
Mode :
FM (normal/narrow), AM (wide/normal/narrow), SSB (USB/LSB) CW (normal/narrow*), WFM
*
Optional FL-52A is required.
Number of memory channels : 1000
(plus 20 scan edges and 1 priority channel)
Antenna connector : Below 30 MHz SO-239 (50 )/Phono (500 )
Above 30 MHz Type-N (50 )
Usable temperature range : 10°C to +50°C (+14°F to +122°F)
Frequency stability : Below 30 MHz ±100 Hz (±20 Hz*)
Above 30 MHz ± 0.0003 % (±0.00006%*)
*When an optional CR-293 is installed.
Power supply requirement : 13.8 V DC ±15% (negative ground)
117 V AC (U.S.A. version with supplied AD-55A)
230 or 240 V AC (other versions with the optional AD-55/V)
Current drain (at 13.8 V DC) : Standby 1.8 A Max. audio 2.0 A
Dimensions
(projections not included) :287(W)× 112(H)× 309(D) mm; 11
5
16(W) × 4
13
32(H) × 12
3
16(D) in
Weight : 7.0 kg (15.4 lb)
Intermediate frequencies :
Receiver
Receive system : Superheterodyne
Sensitivity :
Squelch sensitivity :
Selectivity : WFM More than 150 kHz/6 dB
FM/AM-W More than 12 kHz/6 dB
FM-N/AM More than 5.5 kHz/6 dB
AM-N/SSB/CW More than 2.2 kHz/6 dB
CW narrow* More than 500 Hz/6 dB
*Optional FL-52A is required.
Spurious and image rejection ratio : Below 30 MHz More than 60 dB
301000 MHz 50 dB (typical)
12401300 MHz
Audio output power : More than 2.0 W
at 10% distortion with an 8 load
IF shift variable range : More than ±1.2 kHz
External speaker connector : 2-conductor 3.5 mm (
1
8")/48
All specications are subject to change without notice or obligation.
Version Frequency Coverage (MHz)
U.S.A.
0.10000 823.99999
849.00001 868.99999 894.00001 1999.99999*
Europe 0.10000 1999.99999*
France 0.10000 87.50000 108.00000 1999.99999*
Frequency band 1st 2nd 3rd*
0.1 29.99999 48.8 10.7 0.455
30.0 499.99999 778.7 10.7 0.455
500.0 1024.99999 266.7 10.7 0.455
Frequency band (MHz)
SSB/CW
0.10.49999 1.0 µV 6.3 µV
0.51.79999 2.0 µV 13.0 µV
1.81.99999 0.25 µV 3.2 µV 2.5 µV
2.027.99999 0.2 µV 2.5 µV 2.0 µV
28.029.99999 0.2 µV 2.5 µV 2.0 µV 0.5 µV
30.0999.99999 0.32 µV 2.5 µV 2.0 µV 3.2 µV 0.5 µV 1.4 µV
1240.01300.00000 0.32 µV 2.5 µV 2.0 µV 3.2 µV 0.5 µV 2.0 µV
*Specications guaranteed 0.11000 MHz and 12401300 MHz
1025.0 1999.99999
Utilizes converter method:
Local freq.: 500, 1000 or 1010 MHz
Frequency band
(MHz)
SSB/CW/AM-N
threshold tight threshold tight threshold tight
1.829.99999 10 µV 320 mV 0.5 µV 320 mV 0.5 µV* 320 mV*
301000
12401300
4.5 µV 320 mV 0.4 µV 320 mV 0.4 µV 320 mV
FMAM/AM-W WFM
threshold tight
4.5 µV 320 mV
WFMFMAM-WAM-NAM
*FM mode can only be used above 28 MHz.
Unit: MHz
*Except WFM.
43
15
OPTIONS
AH-7000
SUPER WIDEBAND
OMNIDIRECTIONAL
ANTENNA
SP-21 EXTERNAL SPEAKER
MB-23 CARRYING HANDLE
IC-MB12 MOBILE MOUNTING BRACKET
CT-17 CI-V LEVEL CONVERTER
AD-55/A/V AC ADAPTER
CR-293 HIGH STABILITY CRYSTAL UNIT
Provides improved frequency stability.
Frequency stability: ± 5 ppm (0°C+60°C; 32°F+140°F)
FL-52A CW NARROW FILTER
(455 kHz; 500Hz/6 dB)
UT-102 VOICE SYNTHESIZER UNIT
Frequency coverage:
Receive 251300 MHz
Transmit 50, 144, 430, 900,
1200 MHz bands
Type of antenna: Discone
Weight: 1 kg
Carrying handle, convenient for portable operation. Use
the screws supplied with the IC-R8500; DO NOT use the
screws supplied with the MB-23.
For remote control of up to 4 receivers from 1 PC. You can
set memory contents, including names, as well as read
data from the receivers.
Designed for base station
operation.
Input impedance: 8
Max. input power: 5 W
Receiver mounting bracket for mobile operation.
Not available in European countries due to local regulations.
Provides AC operation.
(AD-55 Europe version only)
44
16
DOC
DECLARATION
OF CONFORMITY
We Icom Inc. Japan
1-1-32, Kamiminami, Hirano-ku
Osaka 547-0003, Japan
Declare on our sole responsibility that this equipment complies with the
essential requirements of the Radio and Telecommunications Terminal
Equipment Directive, 1999/5/EC, and that any applicable Essential Test
Suite measurements have been performed.
Kind of equipment: COMMUNICATIONS RECEIVER
Type-designation: iR8500
Version (where applicable):
This compliance is based on conformity with the following harmonised
standards, specications or documents:
i) Article 3.1a EN 60950-1: 2001
ii) Article 3.1b EN 301489-1 and EN 301489-15
iii) Article 3.2 EN 301 783-2
iv)
v)
Düsseldorf 4th Aug. 2006
Place and date of issue
Icom (Europe) GmbH
Himmelgeister straße 100
D-40225 Düsseldorf
Authorized representative name
H. Ikegami
General Manager
Signature
A-5395H-1EX-e
Printed in Japan
© 19962006 by Icom Inc.
1-1-32 Kamiminami, Hirano-ku, Osaka 547-0003, Japan
<Intended Country of Use>
GER FRA ESP SWE
AUT NED POR DEN
GBR BEL ITA FIN
IRL LUX GRE SUI
NOR
#23 EUR
32


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