Dynamic Volume Control (Dvc); Ctcss & Dcs; Choosing The Ctcss Or Dcs Tone - GME TX3345 Instruction Manual

Channel Selected Receive Channel
1
2
3
4
5*
6
7
8
41
42
43
44
45
46
47
48
*Emergency channel only

DynAMiC VoluMe Control (DVC)

the modulation level of signals heard on the uhF cB band
often vary considerably resulting in noticeable differences in
received audio volume between stations. in the past, users
have compensated for this by adjusting the volume control for
each incoming signal. however with the introduction of 80
channel narrowband transmissions, the diversity in received
audio volume has increased even further. the tX3345's
dynamic Volume control is designed to automatically
compensate for these variations in received audio level to
provide a constant audio output level to the speaker.
t X 3 3 4 5
Transmit Channel
1 31
2 32
3 33
4 34
5* 35*
6 36
7 37
8 38
41 71
42 72
43 73
44 74
45 75
46 76
47 77
48 78
to select the dynamic Volume control:
1. Press and hold the
2. Press the
MENU
F
3. Press the
Volume control off) or dVcon (dynamic Volume control
on).
4. When finished, press and hold the
menu to time out.
ctcss (continuous tone coded squelch system) and dcs
(digitally coded squelch) are squelch quieting systems that
allow several groups of users to share the same channel
without disturbing each other. there are three optional tone
sets available comprising 38, 50 or 104 codes.
ctcss and dcs systems apply a continuous low-level low
frequency tone to your transmission with a matching decoder
at the receiver to control your radio's squelch. With ctcss
or dcs enabled, the channel remains quiet to all incoming
signals unless they carry the correct tone. When a transmission
with the correct tone is received, the squelch opens and
remains open for as long as the signal is present. When
the transmission ends, the channel becomes quiet again.
transmissions that do not use the correct tone will not
be heard.
the tX3345 allows ctcss or dcs to be enabled or disabled on
selected channels and the ctcss/dcs tone you select will be
used for all ctcss/dcs enabled channels in your radio.

Choosing the CtCss or DCs tone

choosing which tone to use will probably be dependent on
the other radios you talk to. if you talk to others outside your
group who already use ctcss or dcs tones, you will need
to select the tone set and frequency that matches theirs. the
tX3345 supports ctcss 50 and ctcss 38 tone sets as well
as 104 dcs tones. if the users you talk to don't currently use
ctcss or dcs you can make your own choice. there is no
i n s t r u c t i o n m A n u A l
key to enter the menu.
MENU
F
key repeatedly until dVcxx is displayed.
or keys to select dVcoF (dynamic
MENU
F
CTCSS & dCS
key or wait for the
PA G E 9