Owner`s manual

page 3 RITRON, INC. 1-800-USA-1-USA (1-800-872-1872)
Have questions? Call 800-USA-1-USA (800-872-1872) or visit our website at www.ritron.com
OPERATION
page 3
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 vol-
ume 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 10 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 6 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.
To activate Tone Squelch or Carrier Squelch and to
Monitor the channel - simultaneously press both the
volume buttons and hold briefly before releasing.
 If the radio emits a SINGLE beep, then Tone Squelch
is turned ON and you will only hear radio transmissions
on that channel with the same QC or DQC tone codes
as your radio.
 If the radio emits a DOUBLE beep, then you are in
Carrier Squelch and you can Monitor all
broadcasts on the channel. To exit Carrier
Squelch press and hold both volume buttons until
you hear the SINGLE beep.
Note: It is possible that the beginning of a call
might be missed while the radio is in
battery saver mode. If this happens, ask
the caller to repeat the message.
If you are unable to activate Carrier Squelch - the radio
has been optionally programmed for Monitor Lockout.
See your Ritron dealer or contact Ritron directly to
disable this option.