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12
USING A REPEATER CHANNEL
UHF CB Repeaters are used to retransmit or relay your signal. Repeaters will
extend the range of your radio and overcome the shielding effect caused by
solid obstructions.
In normal Simplex operation, your radio transmits on one particular frequency
and receives on that same frequency. If there is a barrier (i.e. a Tall Building)
that partially blocks your transmitted signal, the possibility of the other radio
receiving the signal is very slim. Valleys, metallic structures, etc., tend to act as a
screen between radios.
With Duplex operation, the signal coming from your radio is received by the
Repeater station and then re-transmitted at the same time on another channel.
Your
uh078sx is designed with duplex capability on Channels 1 to 8. When any
of these channels are set to operate in duplex mode during transmission, the
uh078sx automatically sends the signal at a frequency 30 channels above the
original in order to access the repeater station. After transmitting, the radio
reverts back to its original operating frequency.
For example:
1. CH01 is on Duplex Mode
- will receive on CH01 but Transmit on CH31
2. CH02 is on Duplex Mode
- will Receive on CH02 but Transmit on CH32, etc….
Refer to UHF Channel & Frequencies table on page 21.
Standard Operation without the aid of a Repeater Station
Operation with the aid of a Repeater
Normal Simplex Operation
Transmitting on CH 01
No signal being
received
Repeater Station
CH 31
CH 01