GME TX6100 - Manual (Page 4)

PAGE 4 INSTRUCTION MANUAL TX6100
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.
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.
Possible issues
ACMA regulations have allocated channels
22 and 23 for telemetry only applications
and have prohibited the transmission of
speech on these channels. Consequently
the TX6100 has a transmit-inhibit applied
to channels 22 and 23. In the event that 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.
telemetry CHannelS