
RADIO PROGRAMMING
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IMPORTANT
To talk to other users in your group, all radios
must be set to the same frequency and
Interference Eliminator codes.
HOW TO READOUT FIELD PROGRAMMED FREQUENCY & TONE CODES
In our example channel 3 of a JMX-446D radio is programmed to operate on the “Brown Dot”
frequency of 464.500 MHz (Frequency code “04”) with 100.0 Hz tone (Tone code “12”).
1. Place the radio into Program / Readout Mode by following the
instructions in FIG- 6 at left. A “P” will appear on the LED display as you
enter program mode.
2. Release the Push-to-talk button after the beeping has stopped. The
radio will display a series of six characters for Radio Identification, with
each character separated by a hyphen. The 1st two characters indicate
the model number, the 3rd and 4th characters indicate the radio type,
and the 5th and 6th characters indicate the firmware revision.
In this example:
Model: 25
Radio Type: 19
Firmware Revision: 04
NOTE: Radio models with firmware revisions prior to 14.01 do not
display the Radio Identification sequence.
3. After the Radio Identification has been displayed the digit 1 will appear,
followed by a hyphen, and the radio will emit a triple beep indicating that
the radio is in program mode and channel 1 is selected.
4. Press the Channel button to select the channel to be read out. The
channel number will appear briefly on the display as you step through
the channels. When you have settled on a channel a hyphen will appear
across the center of the display to indicate that it is ready for readout.
5. Press and release the On / Volume Up button. The radio will begin to
display a series of four digits; with each digit separated by a hyphen.
The 1st and 2nd digits indicate the frequency code; see Table I on page 12.
The 3rd and 4th digits indicate the tone code; see Table 2 on page 13.
JMX-144D / 446D / 444D Models Only
If a 5th digit is displayed, the channel has been programmed for DQC
and the last three digits indicate the DQC code; see Table 3 on page 13.
If more than 5 digits are displayed refer to page 17.
6.
If the channel is PC-programmed for any frequency not listed in Table I on
page 12, an error tone will sound and an “E” will appear on the display.
7. To readout another channel, repeat steps 4 through 6.
8. Turn the radio OFF and then ON again—the radio is now ready to use.
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