GB1 instruction guide | 9
Menu
In the functions Menu it is possible to change the radio’s parameters. Press the
Menu button and select the desired function (from F1 to F5) by using the
▲ or ▼ keys. Confirm by pressing Menu again and select the desired value
with the ▲ or ▼ buttons.
The functions menu is composed of the following 5 options listed here below:
F1 CTCSS (subaudio tones): you can select the desired CTCSS tone; you
can choose amongst 50 dierent tones from 67Hz to 254,1Hz. If you
select ‘OF’ the CTCSS tone is disabled.
F2 DSC codes: the codes available are from 1 to A4. If you select ‘OF’ the
DCS code is disabled.
F3 SQUELCH LEVEL: it allows to select the squelch threshold level (from
0 to 9. 0 = no squelch threshold). To open the squelch and disable a
threshold previously set, press
.
F4 KEYPAD BEEP: whenever a key is pressed the radio will emit a beep
tone. If it’s too loud or too soft for you, it can be adjusted with 9 dierent
levels between b0 and b8. b0 = no beep.
F5 RF POWER: to select the tx power level. Two levels are available: HI
(high) and LO (low). This menu is active only in the export version.
If you hold down the Menu button for 3 seconds, you will enable the keypad
lock; the display shows
and only and keys will be active.
To disable the keypad lock push the Menu button again for 3 seconds.
Monitor
This function allows to temporarily open the squelch so as to listen to signals
that are too weak to be received. Briefly press to open the squelch. This key
also excludes the CTCSS and DCS tones programmed on that channel.
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