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Operating Your Radio
39
Nothing Comes Close to a Cobra
®
38
English
Operating Your Radio
GMRS Mode Programming
MEMSAMEATIS VOX LOMEDHI
VHF
T
R
A
B
GMRS
X
CIU
GMRS Standby
GMRS Mode Programming
GMRS Mode Programming
The GMRS (General Mobile Radio Service) feature is a
landmobile service available for short-distance, two-way
communications in the USA. You must have a valid FCC license
to communicate on these channels (see page 28).
Start from GMRS Standby mode to begin GMRS Setup
programming. Press and hold the Call/Enter/Setup button for
two (2) seconds to enter the programming mode.
Squelch Control
Squelch Control filters weak signals and radio frequency (RF)
noise so that you will clearly hear the signals you want. The
Squelch Control on this radio is set through the following
keypad operation.
To Set Squelch Control:
1. With the power On, push and hold Call/Enter/Setup
button to access the Setup menu.
2. Squelch control will be the first menu item to appear.
Press the Channel Up and Channel Down buttons to
set level. The signal level bar graph shows squelch
level while you are in Setup mode on the squelch
adjust function.
3. To adjust your squelch, press the Channel Down
button until you hear a hissing sound, then press
and release the Channel Up button until the hissing
stops. This will establish a “Baseline” squelch.
4. By pressing the Channel Up button further, you will
filter weak and medium strength signals. By pressing
Channel Down button, you will receive weaker signals.
5. Press the Call/Enter/Setup button to save this entry
and move to the next Setup mode programming.
NOTE
If the Squelch is set so that you can hear a continuous
hissing sound, the Memory Scan and Tri-Watch
functions will be blocked.
Call/Enter/Setup
CTCSS and DCS Coding Mode
Continuous Tone Controlled Squelch System (CTCSS) and
Digital Coded Squelch (DCS) coding are used in two-way radio
systems. These are sub-audible frequencies or digital tones that
are sent continuously with speech to engage other radios with
this feature. This feature is generally used between talk groups
on shared channels. Radios with the same subcode set will
hear your transmission. Radios with both DCS and CTCSS set to
Off or 00 will be able to hear your transmissions.
To Set CTCSS Code Entry:
1. Display will show CTCSS icon and OFF icon flashing.
NOTE
If CTCSS was previously set to a Code number,
display will show the current GMRS channel
and flash the CTCSS icon and Code number.
2. Codes begin at 00 (OFF) and go to 38, followed by 00,
and return back to 01 again. The last used GMRS
channel will be shown in the large digit display.
NOTE
If CTCSS is On, then DCS will be Off. If
DCS is On, then CTCSS will be Off. The radio
does does this automatically.
3. Press Channel Up/Down button to change code
number, or press and hold Channel Up/Down button
to rapid advance (scroll).
4. Press Call/Enter/Setup button to save entry and
move to the next setup programming mode.
Channel Up/Down Buttons
Call/Enter/Setup
MEMSAMEATIS VOX LOMEDHI
VHF
T
R
A
B
GMRS
X
CIU
CTCSS Off
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