GME TX670 - Manual (Page 5)

t X 6 7 0 i n s t r u c t i o n m A n uA l PA G E 5
IMPORTANT INFORMATION
CONCERNING UHF CB RADIO
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 General user
radio licence for citizens Band radio and operation is
subject to conditions 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 transceivers 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 volume.