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POWER-UP SELF-TEST
Each time the radio is turned on it will perform a
power-up self-test. All display segments will turn on, and
after successful completion of the test, the radio will
change to the last operating state (channel, volume, etc.)
and sound three (3) or four (4) beeps. Three beeps
sound if the radio is operating in the normal (not SCAN)
state. Four beeps will sound if the radio is scanning. The
status will be indicated in the LCD. If the radio fails the
self-test, no beeps will be sounded.
CARRIER CONTROL TIMER
This feature, programmable on a per-channel basis,
prevents unnecessary channel traffic and radio damage
if the transmit timer limit is exceeded. If the programmed
timer times-out during a transmission, the radio will beep
and stop transmitting. The beeping tone will continue
until the operator releases the PTT button. Releasing the
PTT button resets the timer.
CHANNEL BUSY LOCK-OUT
If the radio is receiving a signal when the PTT button
is pressed, a beep will warn the operator that the radio is
receiving a carrier and the transmission will not occur.
The beep is sounded as long as the PTT button is
pressed. The channel-busy feature is programmable on
or off on a per-channel basis.