Ritron j-u410 Mode D'Emploi

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17 Section 
3 
Programming 
 
94 
3.4 
Program Paging Codes 
For paging, it is desirable to program the wireless speaker for 2-Tone or Selcall operation. The user is able to field 
program the radio for one of the 9 pre-determined 2-tone pairs specified in 
Table 4
, or for a 3-7 digit Selcall code.  
2-Tone codes correspond to field programmable 2-Tone encode (transmit) codes available in other RITRON 
portable and base radios. In our example we will program an LM-U450 to operate with 2-Tone Paging Code 94 
frequencies of 389.0 and 669.9 Hz. 
 
1. Refer 
to 
Table 4
 to determine the two-digit code for 2-tone decode on 389.0 and 669.9 Hz 
and write it down. 
2.  Loosen the (4) captive screws in the front corners of the case. These screws are captive to 
the housing; to prevent damaging them, DO NOT remove the screws from the housing. 
3.  Separate the case front from the case back, leaving the RPS-1A power supply or backup 
battery connected to the radio. 
 
NOTE:  The voltage of the batteries must be greater than 6 VDC to program properly. 
4. Press 
and 
HOLD the PROGRAM button. A "P" will appear on the program display as you 
enter program mode and the radio will beep rapidly. 
5. Release 
the 
PROGRAM
 
button after the beeping has stopped. The radio will emit a triple 
beep indicating that the radio is in program mode and a hyphen will appear on the program 
display.  
6.  Scroll to the character “C” by clicking the PROGRAM
 
button until the program display 
shows the correct character. Pause—the radio will sound a low tone and show a hyphen 
across the center of the display to indicate that it is ready to accept the first digit of the 2-
Tone or Selcall code. 
7.  Enter the 1
st
 digit of the 2-Tone or Selcall code by clicking the PROGRAM
 
button until the 
program display shows the desired number. Pause—the radio will sound a low tone and 
show a hyphen across the center of the display to indicate that it is ready to accept the 
next digit. 
8.  Enter the 2
nd
 digit of the 2-Tone or Selcall code by clicking the PROGRAM
 
button until the 
program display shows the desired number.  Pause—the radio sounds a low tone and 
show a hyphen across the center of the display to indicate that it is ready to accept the 
next digit. 
9.  FOR SELCALL CODES ONLY – Enter the 3
rd
, 4
th
, 5
th
, 6
th
, and 7
th
 digits of the Selcall code 
by clicking the PROGRAM
 
button until the program display shows the desired number. 
Pause—the radio sounds a low tone and will show a hyphen across the center of the 
display to indicate that it is ready to accept the next digit. 
10.  Press and release the ENTER button to save your programming. A triple beep will sound to 
indicate that programming was successful and a hyphen will appear on the program 
display.  The radio is now ready for another program entry. 
 
NOTE:  An error tone will sound if you attempt to save an incorrect code, an "E" will appear 
on the display.  Check the digits you are attempting to enter, then re-enter.   
11.  Once you have made your final program entry, press the ENTER button a final time to exit 
programming mode.  The Program display will be blank and the radio will be ready for use.  
The Loudmouth
 will exit program mode automatically after 30 seconds if no program 
entries are attempted. 
 
 
Table 4:  2-Tone Paging Codes 
  Code  
Tone 1  
Tone 2 
 90 
 91 
330.5 
569.1 
 92 
349.0 
600.9 
 93 
368.5 
634.5 
 94 
389.0 
669.9 
 95 
410.8 
707.3 
 96 
433.7 
746.8 
 97 
457.9 
788.5 
 98 
483.5 
832.5 
 99 
330.5 
600.9 
 
00 
No Selective Signaling 
IMPORTANT NOTE:   
If the Loudmouth
™ 
displays 2-Tone Paging Code “90” on 
readout, it has been PC programmed for custom 2-Tone 
frequencies.  Entering code “90” will cause the Loudmouth
 to 
operate on the PC programmed custom 2-Tone frequencies.