UNIDEN Model UH013 UHF CB Radio
Operation
Selecting a Channel
Turn the Rotary Channel Selector to select the desired channel.
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MON SCN GS BCL INS |
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Channel |
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Selector | SLT | SRC HLD SQT M |
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| S/RF |
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SLCT | SRCH | SCAN | MEM | INST | SQT |
STORE | TSQ | OS/GS | DUP | SET/SKIP | CTCSS |
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| PTT |
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Transmitting
Select the desired channel. Press the Microphone’s PTT button and speak normally into the microphone. Hold it approx. 7cm from your mouth. Release the PTT button to end the transmission and listen for a reply.
Using Repeater Channels
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.
Repeater Station
Normal Simplex Operation |
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Transmitting on CH 31 | No Signal |
| being Received |
Standard Operation without the aid of a Repeater Station
CH 31 | CH 01 |
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Operation with the aid of
Repeater Station (Duplex)
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
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