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Standard Horizon HX851E Manual

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Page 19HX851E
PTT
(
Push-To-Talk
)
Switch
(
Left side
)
When pushed activates the transmitter.
DISTRESS Key
(
Right side
)
Used to send a DSC Distress Call. To send the distress call, refer to sec-
tion “7.3.1 TRANSMITTING A DSC DISTRESS ALERT”.
Keypad
[
VOL
(
STROBE
)]
Key
Press this key to activate the volume adjusting mode. Press the
[
]
or
[
]
key to adjust the receiver audio volume level.
Secondary use:
Press and hold this key to toggle the light/strobe function on and off.
[
SQL
]
Key
Press this key to activate the squelch adjusting mode. Press the
[
]
or
[
]
key to adjust the squelch threshold level.
Press and hold this key for 3 seconds to open the squelch, allowing
you to monitor the operating channel. Release the key to resume nor-
mal (quiet) monitoring.
[
(
UP
)]
Key
This key is used to change the operating channel, receiver volume
level, and squelch threshold level.
Press the key momentarily, the channel (or level) increases one step.
Holding the key, the channel (or level) increases continuously.
[
(
DOWN
)
Key
This key is used to change the operating channel, receiver volume
level, and squelch threshold level.
Press the key momentarily, the channel (or level) decreases one step.
Holding the key, the channel (or level) decreases continuously.
[
H/L
( )]
Key
Press this key to toggle the transmitter output power between “High”
(6 Watts), “M2” (5 Watts), “M1” (2.5 Watts), and “Low” (1 Watt) power.
This key does not function on the “Transmission Inhibited” and “Low
power only” channels.
Secondary use:
Hold down this key to lock the keypad (except the PTT,
[
VOL
(
STROBE
)]
,
[
SQL
]
,
[
POWER
]
, and
[
H/L
( )]
keys) so that they are not acciden-
tally changed. The “ ” icon will appear at the bottom right corner on
the display, to indicate that the functions are locked. Hold down this
key until the “ ” icon disappears to unlock the radio.
… 19 …


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