Uniden UH088SX - Manual (Page 12)

SELECTING A CHANNEL
TRANSMITTING
USING REPEATER CHANNELS
Press or button to select a channel
Select the desired channel. Press the Microphone's PTT button, hold it approx
7cm from your mouth and speak normally into the microphone.
The icon will light. Release the PTT button to end
the transmission and listen for a reply.
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 that partially blocks your
transmitted signal, the probability of another radio receiving the signal is very slim. Hills, tall buildings, metallic
structures, ... etc. tend to act as a screen between radios.
The Signal coming from your radio is received by the Repeater Station and then retransmitted at the same time
on another channel. This operation is called "Duplexing".
For example,
CH01 on Duplex Mode will Receive on CH 01 but Transmit on CH31
CH02 on Duplex Mode will Receive on CH 02 but Transmit on CH32 etc ....
If you transmit on CH01 Duplex mode, you are actually transmitting on CH31, the repeater station down-converts
your signal and retransmits on CH01.
Operation
UNIDEN UHF CB Transceiver
10
PTT