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.
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