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19
SWITCHING POWER ON/OFF
Switch ON the DC power supply, then press and hold
down [ ] (POWER) until “HELLO” appears on the
Display. Release [ ] (POWER) when you see “HELLO”.
After the “HELLO” message, the frequency and
other indicators light. Pressing [ ] (POWER) too
long, switches the power OFF. If the TS-870S has
not been used for an extended period, “HELLO” may
not appear immediately.
To switch OFF the transceiver, press [ ] (POWER).
After the transceiver has been switched ON, it can
then be switched OFF or ON by using only the
power switch on the DC power supply.
ADJUSTING VOLUME
AUDIO FREQUENCY (AF) GAIN
Turn the AF gain control clockwise to increase the audio
level and counterclockwise to decrease the level.
<<<#6 (9L) >>>
Note:
The position of the
AF
gain control does not affect the volume
of “beeps” caused by pressing buttons nor the CW
transmit sidetone.
Also, the audio level for Packet operation is independent of the
AF
gain control setting.
RADIO FREQUENCY (RF) GAIN
Usually, set the RF gain control maximum clockwise. If
you are having trouble hearing the desired signal due to
excessive atmospheric noise or interference from other
stations, it may help to reduce the RF gain.
To do this, take note of the peak S-meter reading of the
desired signal, then turn the RF gain control
counterclockwise to match this peak reading with the
illuminated S-meter segments. Signals that are weaker
than the level set with the RF gain control will be
attenuated. Reception of the station is easier.
OPERATING BASICS
Furthermore, using a faster AGC setting {page 44} will
help eliminate the blocking affect of the large AGC
voltage that is developed due to a strong adjacent
station.
Depending on the type and gain of your antenna, and
the condition of the band, you may prefer leaving the
RF gain control turned counterclockwise by some
amount instead of turning it fully clockwise.
ADJUSTING SQUELCH
The purpose of squelch is to silence audio output from
the speaker when no signals are present. Setting the
squelch threshold too high causes the squelch to
remain closed while a weak signal is present. Setting
the threshold too low allows noise to be heard between
transmissions from other stations. Many operators
prefer leaving the squelch control fully counterclockwise
unless operating full-carrier modes such as FM or AM.
Turn the SQL control to just eliminate the background
noise when no signal is present, or set and forget at full
counterclockwise rotation.
DUAL DIGITAL VFOs
The A and B VFOs function independently so that
different or the same frequencies can be selected by
each VFO. The following sections explain how to select
a VFO and how to copy frequency data from one VFO
to the other.
SELECTING VFOs ([RX A], [RX B])
Press [RX A] to select VFO A. Press [RX B] to select
VFO B.
1 Assume that you are presently using VFO A.
2 Press [RX B].
VFO B is selected and the frequency currently
selected by VFO B is displayed.
3 Press [RX A] to select VFO A again.
RX TX
AUTO
NOTCH
BEAT
CANCEL
N.R. TX EQ.
LO/WIDTH FILTER HI/SHIFT
AF RF
NB SQL
ENTER TF-SET
MODE
LSB
/USB
FSK
/ R
CW/ R
FM/AM
FINE
1MHz DOWN UP
A=B MENU
RIT
RIT/XIT
M.CH/VFO.CH
XIT CLEAR NB
A
B
M.CH
0
2
46
8
10
0
2
46
8
10
DIGITAL SIGNAL PROCESSOR
USB CW R FSK FM AM M. SCR PRG SCAN F. LOCK FINE MHzLSBAUTO
FULL SEMI AIP AGC AUTO PROC MONI MENU
A B
SPLIT
RIT
TONE
XIT
NB
WIDTH
CTRL
SHIFT
ON AIR AT TUNE
AF RF
0
2
4
8
10
6
RX TX
AUTO
NOTCH
BEAT
CANCEL
N.R. TX EQ.
LO/WIDTH
FILTER
HI/SHIFT
AF RF
NB SQL
ENTER TF-SET
MODE
LSB
/USB
FSK
/ R
CW/ R
FM/AM
FINE
1MHz DOWN UP
A=B MENU
RIT
RIT/XIT
M.CH/VFO.CH
XIT CLEAR NB
A
B
M.CH
0
2
46
8
10
0
2
46
8
10
DIGITAL SIGNAL PROCESSOR
USB CW R FSK FM AM M. SCR PRG SCAN F. LOCK FINE MHzLSBAUTO
FULL SEMI AIP AGC AUTO PROC MONI MENU
A B
SPLIT
RIT
TONE
XIT
NB
WIDTH
CTRL
SHIFT
ON AIR AT TUNE
0
2
46
8
10
AF RF
S
9
7
5
3
1
20
40
60
d
B
RX TX
AUTO
NOTCH
BEAT
CANCEL
N.R. TX EQ.
LO/WIDTH
FILTER
HI/SHIFT
AF RF
NB SQL
ENTER TF-SET
MODE
LSB
/USB
FSK
/ R
CW/ R
FM/AM
FINE
1MHz DOWN UP
A=B MENU
RIT
RIT/XIT
M.CH/VFO.CH
XIT CLEAR NB
A
B
M.CH
0
2
46
8
10
0
2
46
8
10
DIGITAL SIGNAL PROCESSOR
USB CW R FSK FM AM M. SCR PRG SCAN F. LOCK FINE MHzLSBAUTO
FULL SEMI AIP AGC AUTO PROC MONI MENU
A B
SPLIT
RIT
TONE
XIT
NB
WIDTH
CTRL
SHIFT
ON AIR AT TUNE
NB SQL
0
2
4
8
10
6
RX TX
AUTO
NOTCH
BEAT
CANCEL
N.R. TX EQ.
LO/WIDTH
FILTER
HI/SHIFT
AF RF
NB SQL
ENTER TF-SET
MODE
LSB
/USB
FSK
/ R
CW/ R
FM/AM
FINE
1MHz DOWN UP
A=B MENU
RIT
RIT/XIT
M.CH/VFO.CH
XIT CLEAR NB
A
B
M.CH
0
2
46
8
10
0
2
46
8
10
DIGITAL SIGNAL PROCESSOR
USB CW R FSK FM AM M. SCR PRG SCAN F. LOCK FINE MHzLSBAUTO
FULL SEMI AIP AGC AUTO PROC MONI MENU
A B
SPLIT
RIT
TONE
XIT
NB
WIDTH
CTRL
SHIFT
ON AIR AT TUNE
RX TX
A
B
50
49
38
27
16
OFF
CAR DELAY
AGC KEY SPEED
METER PROC MONI
0
2
46
8
100
2
46
8
10
MIC
ATT
ANT DOWN UP
VOX FULL/SEMI
AT TUNE
SEND
THRU/AUTO
AIP
PHONES
PROC MONI
MIC PWR
M.IN
REC F.LOCK
CH 4 CLR
CH 3 SCAN
CH 2 M>VFO
CH 1 M.IN
ENTER TF-SET
FINE
1MHz
QUICK MEMO
MR
SLOW FAST
0
2
46
8
10
SWR
PWR
S
9
7
5
3
1
1
0
2
5
50
FILTER
A
LC
3
10 2
1
.
5
1
0
2
0
4
0
1
0
0
6
0
W
d
B
d
B
2
0
COMP
M.CH
USB CW R FSK FM AMLSBAUTO
FULLVOX SEMI AIP AGC AUTO PROC MONI
HF TRANSCEIVER TS-870
ON AIR AT TUNE
25


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