OPERATION
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800-USA-1-USA
(800-872-1872) or visit our website at www.ritron.com 6
Channel Select
When the Channel button is pressed, the radio will emit a short
Channel beep, increment the channel, and the channel display
will show the new operating channel.
Scan Channel (except JMX-111D)
When the Scan channel is selected by pressing the Channel
button, the radio will emit the Scan beep and begin scanning.
Tone Squelch
When you press and hold both Volume buttons at the same
time, a single beep will sound to indicate that tone squelch is
on. A “double beep” means that carrier squelch is on.
Recharge Battery Alert
As the battery voltage approaches the minimum required
“operating voltage” the radio will emit a series of short beeps to
alert the user that the battery will soon need recharging. Once
the battery charge drops below the required “operating
voltage,” the radio emits a long, low tone and turns itself off. If
you turn the radio back on, it will beep again and shut itself off.
Recharge the battery.
Transmitter Time Out
A low tone followed by a higher-pitched tone sounds and the
transmitter automatically shuts off if you hold down the PTT
button longer than 60 seconds. The radio automatically
switches to receive mode.
OPTIONAL ALERT TONES
JMX “D-Series” models JMX-144D / 444D / 446D can be
programmed using the RITRON PC Programmer for optional
alert tones. See your Ritron dealer or contact Ritron directly for
programming of these options.
Receive Squelch Tone
A short tone sounds at the end of each received transmission
to indicate that the channel is clear and you may transmit.
Busy Channel TX Inhibit
If a user is transmitting on your radio frequency without your
tone, you will not be allowed to transmit. The radio will beep a
series of long, low tones while the PH is held down (like a busy
signal).
Transmit Clear To Talk Beep
A short tone sounds after the PTT has been pressed to
indicate that the radio is ready for you to begin talking.
A Transmit / Busy Lamp in the
upper left corner of the Channel
Display is lit whenever the
transmitter is activated and blinks
when the channel is busy.
FIG-2: TRANSMIT / BUSY LAMP
(15 strony)
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