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Alert Tone Indicators GP300 Portable Radios
Alert Tone Indicators
Power-Up
Each time the radio is turned on, a microcomputer and syn-
thesizer self-test occurs. A high pitched alert tone is gener-
ated for approximately 1/8 second to indicate that the
microcomputer and synthesizer are functioning properly. A
second low pitched tone will then be generated if the start-
up test is not successful.
Transmit on Blank or Receive-
Only Channels
Pressing the PTT button while
tuned to a blank or “receive-
only” channel will cause an alert
tone. The tone will continue as
long as the PTT button is
depressed. The radio transmit-
ter is not enabled.
Transmit Inhibit on Busy Channel with Busy Channel
Lockout
Pressing the PTT button during a "busy channel" condition
(other than your PL/DPL group) generates a continuous
busy tone that lasts as long as the button is depressed.
Time-Out-Timer
The Time-Out-Timer (T.O.T.)
limits the amount of transmis-
sion time to a preset length. At
the end of this time an alert tone
indicates that your transmission
has been cut off. The alert con-
tinues as long as the PTT button
is depressed.
GP300_owners.book Page 6 Thursday, August 7, 1997 9:49 AM
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