OPERATION
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ON-OFF / VOLUME ADJUST
To turn on the radio - press the On / Volume Up button. The
radio will emit a beep and the channel display will light. If the
radio turns on to the Scan Channel it will emit the Scan Beep.
The radio will always turn on to the channel that was selected
when it was last turned off.
To adjust the volume
- press the volume up or volume down
button until you reach the desired level. The volume level is
displayed as a number between 0 through 9.
To turn OFF “beeps” - speaker beeps can be disabled through
field programming to provide a silent mode of operation (ideal
for security applications), only your incoming calls will be heard
on the speaker. Refer to page 13 for How to Field Program
Radio Options.
When speaker beeps are disabled only the low battery
indication and 2-Tone decode ring tone, if enabled, are
retained.
To turn off the radio
- press and hold the Off / Volume Down
button until a two tone “turn-off beep” is heard. For instant turn-
off, press the PTT button while holding the Off / Volume Down
button.
CHANNEL SELECTION
To change channels - press and release the Channel Selector
button. The radio will emit a short Channel beep, increment the
channel, and the Channel Display will show the new operating
channel. If the highest channel number is selected and you
press the Channel Selector button, the radio resets to channel
1 and the Channel beep is heard on the speaker.
If the Scan Channel is selected - the radio will emit the Scan
Beep and the Channel Display will rapidly flash the channel
numbers as they are scanned. If a signal is received the
channel display will indicate the channel number, and when the
received signal is removed the radio will wait briefly, sound the
Scan Beep, then scanning will resume as normal.
If the Weather Channel is selected
- on a VHF radio the
Channel beep will be heard and the display will light a single
segment that indicates which of the seven NOAA frequencies
is monitored. See the “NOAA Weather Radio” section on page
9 for details.
RECEIVE
To hear calls from other users - adjust the volume as desired.
The radio can only receive broadcasts while the Push-To-Talk
button is not being pressed.
Whether or not you hear these broadcasts depends upon the
squelch settings. There are two standard squelch modes that
can be used in the JMX “D-Series” portable.
• Carrier Squelch lets you hear all broadcasts on your
channel strong enough for the radio to detect, and silences
noise.
• Tone Squelch uses the QC or DQC “tone squelch” format
available on the JMX. This allows you to screen out “on-
channel” broadcasts that do not carry the correct code
programmed for the radio.
When Carrier or Tone Squelch is selected by the user, all
channels will operate in that mode. The JMX “D-Series” radio
will operate in tone squelch mode when it is first turned on.
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