PA G E 4
i n s t r u c t i o n m A n uA l t X 6 5 5
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.
PossiBle issUes
When a new narrowband radio receives a transmission from an older
wideband radio the speech may sound loud and distorted – simply
adjust your radio volume for best performance.
When an older wideband radio receives a signal from a new
narrowband radio, the speech may sound quiet ‑ simply adjust your
radio volume for best performance.
Depending on how close your receiving radio is to another
transmitting radio, there can be interference from the transmitting
radio if it is using a channel adjacent to the channel you are listening
to. Simply try going up or down a few channels from the currently
selected channel.
The above situations are not a fault of the radio but a symptom of
operating wideband and narrowband radios in the same bandwidth.
This possible interference will decrease over time as the population of
wideband radios ages and decreases.
Further information and updates are available from the
Australian Communications and Media Authority (ACMA) at
www.acma.gov.au
and the Ministry of Economic Development
(MED), Radio Spectrum Management at:
www.rsm.govt.nz
The ACMA has allocated channels 5/35 for emergency use only.
Channel 5 is the primary Simplex Emergency Channel. Where a
Channel 5 repeater is available, you should select Duplex on Ch 5.
NOTE:
Channel 35 is the input channel for the Channel 5 repeater
therefore Channel 35 should also not be used for anything other than
emergency transmissions.
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