UHF
Radio is a form of ground wave communication that is highly recommended
for coastal, outback, warehouse and business communications in
Australia. This form of communication is on the FM Band which
supplies superior voice quality and less ambient background noise.
Definitely a more professional type of communication than the
27Mhz CB. The other beneficial factor with UHF Radio is the public
repeater system throughout Australia. With these repeaters, range
of UHF Radio is improved drastically allowing far more flexible
use of the radio. Features like scan, selcall and scrambler mode
once again gives the user far greater flexibility for any given
situation. UHF radio is available in handheld or mobile units.
Listed below are brief explanations of the main features found
in a UHF radio.
SCAN
Scan is a feature that is extensively used in highway and outback
communications for gaining the maximum information on this band
of radio. There are two types of scan on each scanning UHF Radio.
Group scan allows the user to program any channels
he or she desires into the scan function. This type of scan is
commonly used for gaining the maximum information whilst on the
road. A common scan is CH 1-8 and CH 40. Channels one up to eight
cover all repeater stations throughout Australia and channel forty
is classed as the highway channel.
Open
scan allows the user to quickly scan all forty channels
continuously. This is most commonly used in an emergency situation
when communication is needed with anybody that can help your current
situation.
SELCALL
Selcall is a feature that is designed more for
the business user but can also be a handy feature if you are travelling
with more than one vehicle. Selcall stands for Selective
Calling System which allows the user to call each individual
radio separately or as a group. This system uses coding that is
transmitted to the other radios in the group to raise an alarm
on the corresponding radio. Thus letting the other user know that
he is being contacted. For a more in depth look at this feature
please feel free to contact us at Olbis World - Communications
Division.
DUPLEX
(Repeater Function)
Duplex
is the term used for UHF radios for repeater use. Duplex simply
means that the radio is transmitting on a different channel than
what it receives on. Eg. Channel 1 repeater .The radio will transmit
on channel 31 and receive on channel 1. All repeaters in Australia
for UHF radio are located on channels 1- 8 duplex. Any current
model UHF radio has this facility standard.
UHF
ANTENNA
The
antenna is an extremely under rated piece of equipment to be used
with the UHF Radio. This particular part of your system plays
one of the most important roles in your communications package.
The right choice of antenna can improve performance considerably
and must be chosen carefully. See our "UHF
Antenna Page" for detailed information about the
various models that are available.
HIGHWAY
CHANNEL
The
highway channel for UHF Radio is on CH. 40. This is most commonly
used by the trucking industry and the general public for highway
travelling. Channel 29 is also used by Interstate transport on
the Pacific/Princess Highway in NSW.
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