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.

Standard Operation without the aid of a Repeater Station

Normal Simplex Operation	No signal being
Transmitting on CH 01	received

Operation with the aid of a Repeater

Repeater Station

CH 31

CH 01

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.