User's Manual Part 1

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Transmit Timeout
When this feature is enabled the PRC-2090 transceiver will disable the transmitter if
the PTT (push to talk button on the microphone) is held on for more than the time
limit set below i.e. if the microphone is inadvertently jammed under a seat.
Releasing the PTT will reset the transmitter. Settings available are “Disabled”, 1
minute, 2 minutes, 3 minutes:-
Use the Scroll keys to select the setting required (example 2
minutes):-
When the setting required is selected press the key