Owner`s manual
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(800-872-1872) or visit our website at www.ritron.com
HOW TO: DELETE A CHANNEL
1. Follow the instructions in FIG-6 on page 7 to place
the radio in the Program/ Readout Mode.
2. Using the Channel button and the LED display on
the front of the radio, select the channel to be
deleted.
3. Enter 4-digit code "0000" as described in the "How
to Field Program Frequency & Tone Codes" section
on page 9.
4. When all four digits are programmed, press and
release the On/Volume Up to SAVE your program-
ming entry. The LED display will briefly show the
channel number you have just deleted and the radio
will sound a triple beep to indicate that channel
deletion was successful.
5. To delete another channel, repeat steps 2 through 4.
6. Turn the radio OFF and then ON againthe radio is
now ready to use.
7. The remaining channels are in the same sequence
and will retain their same channel number. The
Channel Selector will skip over the deleted channel
numbers.
NOTE: If all channels are deleted the radio will not
operate, instead it will turn on in Field Program mode
to allow entry of a valid frequency and tone code.
HOW TO: TURN CHANNEL SCAN "ON / OFF"
1. Follow the instructions in FIG-6 on page 7 to place
the radio in the Program/ Readout Mode.
2. Using the PTT (push-to-talk) button and the LED
display, enter a single digit code "1" to turn channel
scan ON, or code "2" to turn channel scan OFF.
3. Pausethe display will change and show a hyphen,
you will also hear a short low tone.
RADIO PROGRAMMING
page 10
4. Press and release the On/Volume Up to SAVE your
programming entry. The radio will sound a triple beep
to indicate that programming was successful.
5. Turn the radio OFF and then ON againthe radio is
now ready to use.
HOW TO: TURN WEATHER CHANNEL "ON / OFF"
1. Follow the instructions in FIG-6 on page 7 to place
the radio in the Program/ Readout Mode.
2. Using the PTT (push-to-talk) button and the LED
display, enter a single digit code "3" to turn weather
channel ON, or code "4" to turn weather channel
OFF.
3. Pausethe display will change and show a hyphen,
you will also hear a short low tone.
4. Press and release the On/Volume Up to SAVE your
programming entry. The radio will sound a triple beep
to indicate that programming was successful.
5. Turn the radio OFF and then ON againthe radio is
now ready to use.
HOW TO: TURN WEATHER ALERT "ON / OFF"
1. Follow the instructions in FIG-6 on page 7 to place
the radio in the Program/ Readout Mode.
2. Using the PTT (push-to-talk) button and the LED
display, enter a single digit code "5" to turn weather
alert ON, or code "6" to turn weather alert OFF.
3. Pausethe display will change and show a hyphen,
you will also hear a short low tone.
4. Press and release the On/Volume Up to SAVE your
programming entry. The radio will sound a triple beep
to indicate that programming was successful.
5. Turn the radio OFF and then ON againthe radio is
now ready to use.
DEALER PC PROGRAMMABLE FEATURES
The JMX "D-Series" handheld radios have other features
available through PC programming. See your Ritron
dealer or contact Ritron directly for PC programming of
these option.
Receive and Transmit Frequencies not
contained in Frequency Code Table 1, page 8.
Wide or narrow band transmit operation can be
set per channel.
Transmit Time Out can be changed.
Power Saver time can be set or disabled.
Additional PC programmable features ONLY available to
models JMX-144D, JMX-446D and JMX-444D include:
Scan Channel Options include scan resume delay
time, busy channel blocking, last active channel
beeps, and priority scanning options.
DQC Selective Signaling 83 digital privacy codes.
Squelch Tightener Receiver carrier squelch can be
adjusted UP or DOWN.
Transmit Power (JMX-144D and JMX-444D Only)
Monitor Lock Out can be set to prevent monitoring
of the channel, only broadcasts with the correct QC or
DQC code can be heard.
Transmit Inhibit on Busy Channel can be set to
prevent transmitting when a broadcast is present on
the receiver that does not carry the correct code.
Courtesy Beep sounds at the end of each received
transmission.
Transmit Clear To Talk Beep sounds after the PTT
has been pressed.
Field Programming can be disabled.
4-Hour Inactivity Turn-Off The radio can be set to
turn off automatically if not used for over 4 hours.