Mode Description
Transmit Inhibit
on Busy
Channel with
Carrier
You cannot transmit if any traffic
is detected on the channel.
Transmit Inhibit
on Busy
Channel with
Wrong Squelch
Code
You cannot transmit on an active
channel with a squelch code or (if
secure-equipped) encryption key
other than your own. If the PL
code is the same as yours, the
transmission is not prevented.
Quick-Key
Override
This feature can work in
conjunction with either of the two
above variations. You can
override the transmit-inhibit state
by quick-keying the radio. In
other words, two PTT button
presses within the
preprogrammed time limit.
Transmit Inhibit
This feature is available for APCO 25 trunking, Type II
trunking and Conventional operations for all APX
radios.
When Transmit Inhibit feature is enabled, the radio
stops all transmission including voice and data. The
radio could receive messages but not replying the
acknowledgement request of the received message.
User could physically control the transmission of the
radio especially during operation in hazardous
environments with this feature. An environment is
considered hazardous when the power emitted by the
radio power amplifier could initiate an explosion or
other dangerous reactions.
When the Transmit Inhibit feature is disabled, the
radio functions according to its normal operations.
The radio sounds alert tone when user enters or exits
this feature and also when PTT is pressed.
Note: Acknowledgement of any messages required
from the radio is not transmitted if the Transmit
Inhibition is enabled.
Enabling Transmit Inhibition
Perform one of the following actions:
• Switch the preprogrammed Transmit Inhibit
switch to Transmit Inhibit enabled.
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