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- Press and hold the PTT button to transmit, then speak into the
microphone clearly and slowly. The Transmit LED lights red.
- Release the PTT Button to receive.
- Communication can only be accomplished when the channel and
CTCSS tone frequency of at least two parties are the same.
- The CTC icon will be displayed on the LCD panel if the CTCSS tone
frequency function is enabled.
Channel Selection
In order to communicate with other FRS units, both transmitting and re-
ceiving party must be on the same frequency.
The GMRS-3000PK has 22 channels (frequencies) indicated by the large
digits on the LCD display panel. Channels 1-7 are shared GMRS/FRS
channels; channels 8-14 are FRS only channels, while channels 15-22
are assigned GMRS only channels. If an FRS only channel (8-14) has
been selected, the HI or LO icon will not be displayed on the LCD panel;
otherwise, for channels 1-7 (GMRS/FRS) and 15-22 (GMRS only), the HI or
LO icon will be displayed. Communication with Audiovox GMRS/FRS and
compatible units is possible on these 22 channels. Before transmitting on
the selected channel, press the Monitor (M) Button to check the activity on
that channel. If there is activity on the selected channel, change to another
channel that is clear.
To change the channel:
- From GMRS/FRS standby mode, press the MODE button
once, or until the channel number flashes.
- Press the Up Button briefly to move to the next higher main
channel number.
- Press the Down Button briefly to move to the next lower main
channel number.
CTCSS Mode (Sub-Channel) Selection
The Coded Tone Controlled Squelch System (CTCSS) provides 38 Sub-Fre-
quencies. This feature allows you to utilize the coded squelch tones
(01–38) within a main channel and enables you to communicate with