Uniden uh078sx - Manual (Page 16)

16
Normal Simplex Operation
Transmitting on CH 01
No signal being
received
Repeater Station
CH 31 CH 01
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 Deluxe is designed with duplex capability on Channel 1 to 8. When
any of these channels are set to operate in duplex mode during transmission, the
uh078sx Deluxe 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 27.
Standard Operation without the aid of a Repeater Station
Operation with the aid of a Repeater