Uniden UH770NB TV Antenna User Manual


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23
UHF CB Channel Guidelines
NOTE
Always listen on a channel (or observe the receive signal level
meter) to ensure it is not already being used before transmitting.
Channels5and35areusedforemergencychannels.
CTCSS and DCS will not operate on these channels.
Please follow these guidelines for channel use in Australia:
•Channels05and35areEmergencyChannels.
•Channel11isaCallingChannel.
•Channels22and23arefortelemetryandtelecommand
applications,channels61,62and63areforfutureuseandTXis
inhibited on these channels.
General communication is accepted on all other channels
with these guidelines:
•Channel40-roadchannel(Australia).
•Channels01-08(and31-38),andChannels41-48
(and71-78)arerepeaterchannels.
NOTE
Important information - 80 Channel UHF CB channel expansion
To provide all users additional channel capacity within the UHF CB
Band.TheACMAwillchangethemajorityofthecurrentwideband40
channel use to narrowband channel use. This allows for additional
channelstobeadded,upto80Channels.
This simply means that the new narrowband radio you have purchased
will have more channels than older radios. Please refer to the guidelines
above and the channel chart for further channel information.
A list of currently authorised channels can also be obtained from the
ACMA website in Australia and the MED website in New Zealand.
Interference / Poor Audio
When a new narrowband radio receives a signal from an older
wideband radio the speech may sound loud - however the
UH7700NB’sbuilt-inAVS(AutomaticVolumeStabilizer)circuitrywill
detect and manage incoming audio to comparable levels.
NarrowbandradiosoperatingonCH41-CH80mayencounter
interference from a nearby wideband radios transmitting on high
power on an adjacent channel (frequency).
When an older wideband radio receives a signal from a new
narrowband radio the speech may sound quiet - the wideband radio
user simply adjusts their radio volume for best performance.
The above situations are not a fault of the radio but a symptom of mixed
wideband and narrowband radios in current use. It is expected that as
older wideband radios are phased out this issue will be eliminated.
UNIDEN UH7700NB UHF CB Transceiver
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