Important.information.concerning.uhf.cb.radio - Vertex Standard VX-4600CB Operating Manual

I I c uHf cB r
mportant nformatIon oncernIng adIo
The use of the Citizen Band Radio Service is licensed in Australia by the ACMA
radio communications (Citizens Band Radio Stations) class licence and in new
Zealand by the ministry of Economic Development New Zealand (MED). A Gen-
eral user radio licence for Citizens Band Radio and operation is subject to condi-
tions contained in those licences.
The class licence for users and equipment operating in the CB/PRS 477 MHz band
has been amended.
This radio meets the new 80 channel standard.
In simple terms the same amount of spectrum is available; however, radio trans-
ceivers can now operate in a narrower bandwidth and hence use less spectrum.
These radios are generally referred to as narrowband or 12.5 kHz radios. By using
12.5 kHz channel spacing instead of 25 kHz, the 40 channels originally allocated
can now be expanded to 80 channels thereby doubling the channel capacity and
relieving congestion in the UHF CB/PRS band.
Original 40 channel wideband radios will continue to operate on the original 40
channels, however they will not be able to converse on the newer channels 41 - 80.
The newer narrowband radios will be able to converse with all older 40 channel
wideband radios on all channels 1 to 40 as well as the newer channels allocated
from 41 to 80.
The mixing of narrowband and wideband radios in the same spectrum can cause
some possible operating issues of interference and varying levels of received vol-
ume.
2 VX-4600CB O M
perating anual