3-6
5300 ES Series Mobile Radio Operating Manual
General Operation
• When an unprogrammed channel is displayed, the sequential channel number and
“UNPROGRAMD” are alternately displayed.
• If an invalid channel number is entered using the 0-9 keys, or the Channel Select option
switch is pressed with “UNPROGRAMD” displayed, an error tones sounds,
“INVALID” is briefly displayed, and the displayed channel does not change.
3.5
Setting Squelch Control
This radio does not have a squelch control. The squelch level is preset and usually does not
require readjustment. However, if the squelch level needs to be changed on a conventional
analog channel, it can be changed using keypad programming if available (see Section
5.17 on page 36).
Note
The Keypad programming feature is available to Federal Government users only.
3.6
Transmit Disable
Transmitting can be disabled on each conventional, SMARTNET, SmartZone, and P25
Trunked channel so that the channel is monitor-only. When transmitting is attempted on a
receive-only channel, “RX ONLY” is displayed and an error tone sounds.
3.7
Radio Operating Modes
Each selectable channel can be programmed for the conventional (analog or Project 25
digital), SMARTNET/SmartZone, or Project 25 digital trunked operating mode. For
example, Zone 1/Channel 1 could be a conventional channel, Zone 1/Channel 2 a
SMARTNET channel, and so on. More information on these modes follows.
3.7.1
Conventional Mode
This is a non-trunked operating mode which accesses independent radio channels. There is
no automatic access to several channels. Selecting a conventional channel selects a
transmit and receive frequency and other channel parameters such as squelch control
coding.
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