GME TX3100DP - Manual (Page 4)

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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.
The TX3100 uses advanced DSP processing to minimise the
possibility of interference on adjacent channels and the need to
adjust your volume control to compensate for wide/narrow
band reception.
Further information and updates are available from the Austral-
ian 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.
TELEMETRY CHANNELS
ACMA regulations have allocated channels 22 and 23 for
telemetry only applications and have prohibited the transmission
of speech on these channels. Consequently the TX3100 has a
transmit inhibit applied to channels 22 and 23.
In the event additional telemetry/telecommand channels are
approved by the ACMA, these channels shall be added to those
currently listed where voice transmission is inhibited. Currently
transmissions on channels 61, 62 and 63 are also inhibited and
these channels are reserved for future allocation.