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Jobcom JMX Series Programming Guide

IMPORTANT: This programming guide contains instructions to:

  1. Select alternative operating frequency(s) from the JMX’s stored memory and program it for operation.
  2. Program QCTM (Quiet Call) Codes.
  3. Read out the channel contents if you don’t know what frequency the unit is set for.
  4. NOTE: We strongly recommend you read the entire document before programming.


I.     GENERAL

The JMX-152 and JMX-452 are programmable two-way radios that you can reprogram to other channel frequencies stored in JMX's memory. Reprogramming is typically done to relieve excessive channel congestion or to match the frequencies of other two-way radios in your group. JMX handheld radios are available in two models, JMX-152 VHF and JMX-452 UHF. You can program VHF radios to communicate together and UHF radios to communicate together; BUT UHF AND VHF CANNOT BE PROGRAMMED TO COMMUNICATE TOGETHER. Before reprogramming a JMX radio or reading out its channel contents, identify it as either JMX-152 VHF or JMX-452 UHF. Locate the model identification on the label below the belt clip on the back of the radio.

What You Can Program:

You can enter (program) either one or two channel frequencies from Table 1, and either one or two QC (Quiet Call) codes from Table 2. These tables, on the back page, list all the frequencies and QC codes available in the JMX's memory. With the radio in programming mode, you can also read out the channel frequencies and QC codes already programmed into the radio.

    CHANNEL FREQUENCIES

    Your JMX comes from the factory with two channels programmed, either Color Dots or Color Stars, depending on the frequency band. The programmed channels contain operating frequencies, allowing the JMX to transmit to and receive from other radios on the same frequency(s) within the VHF or UHF band. Identify channel frequencies by the color-coded decals on the bottom of the radio. If the decals are missing, read out the contents of your radio to determine what frequency or code they are programmed to; see Section IV. “Reading the Radio’s Contents."

    QC (QUIET CALL)

    A standard feature of the JMX is QC privacy, which allows units on the same frequency to only hear other radios with the same QC code. Program this feature if your channel is congested with unwanted signals or traffic. IMPORTANT: JMX units are shipped from the factory with QC not programmed.

    You can program a different QC code for each of two channels; refer to Example 4.


II.    PROGRAMMING AND READOUT GUIDELINES

Read the following guidelines before you begin programming your JMX radio or reading out its contents:

  1. Enter (program) each frequency and QC tone as a 2-digit code. Code is entered one digit at a time by pressing the radio PTT (Push-To-Talk button) the number of times equal to the digit’s value. (e.g.: To enter the digit "5," press the PTT five times.) At the completion of each digit, a tone sounds to indicate the unit is ready for the next digit.
  2. EXAMPLE OF PROGRAMMING A 2-DIGIT FREQUENCY CODE:  From Table 1, 151.805 MHz = Code “12”. To enter Code "12," press PTT once = "1," then pause (tone heard); press PTT twice = "2" (tone heard again): you have programmed "12."

  3. Pause, to tell the radio that you are finished entering a digit.
  4. For the digit “0” (zero), press the PTT ten times; DO NOT skip zero.
  5. The frequency band (VHF or UHF) is determined by the radio model.
      1. JMX-152 = VHF;      JMX-452 = UHF

  6. The radio will sound an error tone if you enter a code not listed in Table 1.
  7. If you are programming channel frequencies without QC, enter code “44, No Tone" in sequence after the channel programming. See Examples 1 and 3 below.
  8. Invalid Entries: An error tone indicates you have tried to save an invalid entry. In this case, no programming changes are made. Resume entering codes when you hear a "triple tone" confimring the radio is in programming mode.
  9. Entry Mistakes: If you press the PTT button five times when you intended four, for instance, or if you lose count of the number of presses, DO NOT press the volume up button to store the entry. Instead, start over by turning the radio off, then on again. Perform Step 3* below to return to programming mode.

III.   PROGRAMMING FREQUENCY CODES AND QC CODES

Select the Frequency/ QC Code(s) to Program. Identify the codes for frequency(s) and QC you will be programming; see Table 1 and Table 2. It is helpful to write down the codes in sequence for easy reference while you are programming. Use the chart provided below:

   CH 1 frequency           CH 1 QC code            CH 2 frequency            CH 2 QC code

     (First 2 digits)           (Second 2 digits)          (Third 2 digits)          (Fourth 2 digits)

_______/ _______    _______/ _______    _______/ _______    _______/ _______

Put the Radio in Programming Mode:

    Step 1:  Remove the Phillips head screw located below the channel button, near the base of the radio. Set the screw aside to reinstall when you are finished programming.

    Step 2:  Turn on the radio.

    Step 3*:  Inside the screw hole is a program switch. Press and release this switch by inserting a pen point or paper clip (with the end bent outward), into the screw hole. The unit will sound a triple tone to confirm it is in programming mode.

      Frequencies and codes listed in Examples 1 – 4 are examples only. Select the example from the following four examples that most closely resembles the way you are programming your radio, then substitute the actual channel frequencies and QC codes you have selected from Tables 1 and 2:

    Step 4:  Find the example which meets your requirements and BEGIN PROGRAMMING. Be sure to use your actual codes!

EXAMPLE #1:  One channel frequency without QC:

    To program Channel 1 with Green Dot and no QC = “(0 / 1), (4 / 4)"

    1. "0"     Press the PTT 10 times, pause, (“0” = 10 presses);
    2. "1"     Press the PTT 1 time, pause;
    3. "4"     Press the PTT 4 times, pause;
    4. "4"     Press the PTT 4 times, pause.
    5. Save your entry by pressing and releasing the volume up button. A triple tone confirms the contents were saved.

EXAMPLE #2:  One channel frequency with QC:

    To program Channel 1 with Green Dot and a QC code of 107.2 = “(0 / 1), (1 / 4)”.

    1. "0"     Press the PTT 10 times, pause, (“0” = 10 presses);
    2. "1"     Press the PTT 1 time, pause;
    3. "1"     Press the PTT 1 time, pause;
    4. "4"     Press the PTT 4 times, pause.
    5. Save your entry by pressing and releasing the volume up button. A triple tone confirms the contents were saved.

EXAMPLE #3:  Two channel frequencies without QC:

    To program Channel 1 with Green Dot and without Quiet Call; and Channel 2 with Blue Dot and without Quiet Call = "(0 / 1), (4 / 4), (0 / 2), (4 / 4)"

    1. "0"     Press the PTT 10 times, pause, (“0” = 10 presses);
    2. "1"     Press the PTT 1 time, pause;
    3. "4"     Press the PTT 4 times, pause;
    4. "4"     Press the PTT 4 times, pause;
    5. "0"     Press the PTT 10 times, pause, (“0” = 10 presses);
    6. "2"     Press the PTT 2 times, pause;
    7. "4"     Press the PTT 4 times, pause;
    8. "4"     Press the PTT 4 times, pause.
    9. Save your entry by pressing and releasing the volume up button. A triple tone confirms the contents were saved.

EXAMPLE #4 Two channel frequencies with (2) different QC:

    To program Channel 1 with Green Dot and a QC 107.2 Hz; Channel 2 with Blue Dot and QC 156.7 Hz = “(0 / 1), (1 / 4), (0 / 2), (2 / 5)”

    1. "0"     Press the PTT 10 times, pause, (“0” = 10 presses);
    2. "1"     Press the PTT 1 time, pause;
    3. "1"     Press the PTT 1 time, pause;
    4. "4"     Press the PTT 4 times, pause;
    5. "0"     Press the PTT 10 times, pause, (“0” = 10 presses);
    6. "2"     Press the PTT 2 times, pause;
    7. "2"     Press the PTT 2 times, pause;
    8. "5"     Press the PTT 5 times, pause.
    9. Save your entry by pressing and releasing the volume up button. A triple tone confirms the contents were saved.

Verify Your Programmed Entries:

  1. Verify your programmed entries by pressing and releasing the volume up button again. The radio will then read out all programmed codes as described in Section IV “Reading PROGRAMMED Contents OF THE RADIO.”
  2. After the codes have been read out, return to normal operation by turning the radio off and then back on.

IV.   READING PROGRAMMED CONTENTS OF THE RADIO

  1. Place the radio in programming mode. (See Section III. “PROGRAMMING THE RADIO," Steps 1-3.)
  2. Press and release the volume up button. The radio will sound a series of beeps, pause, then begin another series. Each series represents a digit. The number of beeps is equal to the digit. For example, 9 beeps = the digit "9." The radio will pause between digits. (NOTE: Ten beeps = the digit “0.”)
  3. Count the number of beeps for each digit and write down the digits in the sequence you hear them in the chart provided below. The radio will signal a triple tone when it has completed the readout of all digits. Cross reference your written chart to Table 1 (channel frequency codes) and Table 2 (QC codes.)

      CH 1 frequency           CH 1 QC code            CH 2 frequency            CH 2 QC code

           (First 2 digits)           (Second 2 digits)          (Third 2 digits)          (Fourth 2 digits)

      _______/ _______    _______/ _______    _______/ _______    _______/ _______

Notes:

  • If the radio beeps out four digits (two codes), the radio is programmed for single channel operation (with or without QC, depending on the second 2-digit code.)
  • If the radio beeps out more than eight digits, the unit contents cannot be read using this method. 4) Return to normal operation by turning the radio off and then back on. When you have finished programming or reading out the contents of your JMX radio, remember to reinstall the Phillips screw !

If you experience difficulty, call RITRON, Inc. at 1-800-USA-1-USA.

      TABLE 1:  PTT PROGRAMMABLE RADIO FREQUENCIES
      CODE JMX-150 (VHF)         BUSINESS BAND CODE JMX-450 (UHF)         BUSINESS BAND

      01

      154.600:  GREEN DOT

      01

      467.7625:  J

      02

      154.570:  BLUE DOT

      02

      467.8125:  K

      03

      151.625:  RED DOT *

      03

      464.5500:  YELLOW DOT *

      04

      151.955:  PURPLE DOT

      04

      464.5000:  BROWN DOT

      05

      151.925

      05

      467.8500:  SILVER STAR

      06

      154.540

      06

      467.8750:  GOLD STAR

      07

      154.515

      07

      467.9000:  RED STAR

      08

      154.655

      08

      467.9250:  BLUE STAR

      09

      151.685

      09

      469.2625

      10

      151.715

      10

      462.5750:  WHITE DOT

      11

      151.775

      11

      462.6250:  BLACK DOT

      12

      151.805

      12

      462.6750:  ORANGE DOT

      13

      151.835

      13

      464.3250

      14

      151.895

      14

      464.8250

      15

      154.490

      15

      469.5000

      16

      151.655

      16

      469.5500

      17

      151.745

      17

      463.2625

      18

      151.865

      18

      464.9125

      19

      - - - - -

      19

      464.6000

      20

      - - - - -

      20

      464.7000

        All frequencies are in Megahertz.        (*  =  ITINERANT)

TABLE 2: QUIET CALL CODES & FREQUENCIES

  QC CODE

TONE CODE

FREQ. (Hz)

  QC CODE

TONE CODE

FREQ. (Hz)

  QC CODE

TONE CODE

FREQ. (Hz)

01

XZ

67.0

18

3Z

123.0

35

- -

225.7

02

XA

71.9

19

3A

127.3

36

- -

233.6

03

WA

74.4

20

3B

131.8

37

- -

241.8

04

XB

77.0

21

4Z

136.5

38

- -

250.3

05

SP

79.7

22

4A

141.3

39

- -

69.4

06

YZ

82.5

23

4B

146.2

40

- -

159.8

07

YA

85.4

24

5Z

151.4

41

- -

165.5

08

YB

88.5

25

5A

156.7

42

- -

171.3

09

ZZ

91.5

26

5B

162.2

43

- -

177.3

10

ZA

94.8

27

6Z

167.9

44

- -

NO TONE

11

ZB

97.4

28

6A

173.8

45

- -

183.5

12

1Z

100.0

29

6B

179.9

46

- -

189.9

13

1A

103.5

30

7Z

186.2

47

- -

196.6

14

1B

107.2

31

7A

192.8

48

- -

199.5

15

2X

110.9

32

M1

203.5

49

- -

206.5

16

2A

114.8

33

- -

210.7

50

- -

229.1

17

2B

118.8

34

- -

218.1

51

- -

254.1

Advantage Communications will not be responsible for any errors by users in any way for their programming these radios.

All pages copyright 1999-2015 by Scott Bullock DBA Salty's Uxbridge Ma
  No page content may be used outside of normal viewing without express written consent of the author.