GME GA9800 Instruction Manual page 127

selecting DCS tones. Continue advancing through the tones to
select your required DCS tone.
Note:
Since the display does not have enough digits to display
DCS tones 100 - 104, these tones are displayed as A0 - A4.
5. once the required CtCSS or DCS tone is selected, briefly press
the key to exit the tone setting mode. the selected tone
will now be used on any channels where the Silent mode
is enabled.
ENABLINg CTCSS/DCS ON A ChANNEL
once a CtCSS/DCS tone has been selected, it can be enabled on
individual channels.
1. Press the or keys to select the required channel.
2. Press and hold the
will appear on the display. If a DCS tone is being used,
will also be displayed.
your radio is now in 'Silent' mode and will remain muted on that
channel unless a signal containing your selected CtCSS/DCS tone
is received. Channels that do not have CtCSS/DCS enabled will
remain open to all signals.
you may activate CtCSS/DCS on as many channels as you wish
except channel 5 which is designated for emergency use.
Note:
CtCSS/DCS may not work through some repeaters.
DISABLINg CTCSS/DCS ON A ChANNEL
Repeat steps 1 and 2 above. A low beep will be heard and 'S' will
disappear from the display.
Note:
you will not be able to activate CtCSS/DCS on any channel
if the CtCSS/DCS tone is set to 'oF'.
PA G E 7
DCS tone 103 (A3)
key. A high beep will be heard and 'S'
MONITORINg ThE ChANNEL
It is useful to be able to temporarily open your radio's Squelch to
allow you to listen for signals from other CtCSS/DCS users outside
your group. Because their CtCSS/DCS tone is different to yours,
your Squelch would normally remain closed, preventing you from
hearing them. you can use the
listen to the channel to check that it is clear before transmitting.
this will help prevent you from accidentally transmitting over the
top of others.
to monitor the channel
Briefly press the
hear the usual hiss of an empty channel. Press the
to restore the Squelch to its previous setting.
the tX3100 has a SCAn function that allows a selection of user
programmable channels to be scanned for signals. Channels
are scanned at 20 channels per second. When a signal is found,
scanning will pause on that channel to allow the signal to be
heard, then resume scanning when the channel is clear again.
pROgRAMMINg SCAN ChANNELS
your tX3100 is supplied with all 40 UHF CB channels programmed
into the Scan memory. Any channels not needed, can be removed
if required.
to add or remove channels from the scan memory
1. Ensure that the radio is not already scanning. If it is, briefly
press the
2. Select the required channel by using the
• If is visible on the display, the selected channel is
already in the scan memory.
• If is not visible, then the selected channel is not in
the memory.
• to add or remove the selected channel, press and hold the
key for a few seconds until a beep is heard.
3. Repeat step 2 to add or remove other channels in the
scan memory.
i n s t r u c t i o n m A n u A l
key to open the Squelch and
key. If there are no signals present, you will
scANNiNg
key to cancel the scan function.
key again
or keys
t X 3 1 0 0