About The Radio Controls - Tait TM9300 User Manual

About your DMR digital radio
Lack of static noise
Coverage

About the radio controls

22 Getting started
Your digital radio may be programmed for DMR
(digital) trunking, MPT (analog) trunking, or both (dual
mode). Dual mode networks are able to receive both
digital and analog calls. Fully-featured conventional
analog operation is also available.
You may notice differences between analog and
digital calls in terms of:
static noise in low signal areas, and
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radio coverage in marginal reception areas.
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On digital networks there is no static noise, even in
low signal areas. This lack of static is because your
digital radio removes the 'noise' from the call, so that
you hear only clear voice.
With analog networks, the background noise in a call
gets progressively worse when you are in fringe areas
or even slightly outside normal coverage areas. With
digital networks, a call remains clear and then drops
off quickly at the border of a coverage area. The
reason for this is that a digital call is either received or
it isn't.
The radio controls are the PTT key, volume control,
on / off key, scroll keys, selection keys and function
keys. Some keys have functions assigned to both
short and long key presses:
a short key press is less than one second, and
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a long key press is more than one second.
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The radio controls and their functions are described in
the following sections.