Section 3
Programming
15
3.3
Program Frequency & Tone Codes
To match other radios, the owner can select Frequency, Tone and DQC Codes from
Table 1
,
Table 2
and
Table 3
. In our
example, we will program an LM-U450 to operate on the "Brown Dot" frequency of 464.500 MHz with 100.0 Hz tone.
1.
Refer to
Table 1
to determine the two-digit frequency code and write it down.
2.
Refer to
Table 2
to determine the two-digit tone code for 100.0 Hz and write it down.
3.
Loosen the 4 screws in the front corners of the case. These screws are retained to the housing with
rubber O-rings,
DO NOT
remove the screws from the housing.
4.
Separate the case front from the case back, leaving the RPS-1B power supply or backup battery
connected to the radio.
NOTE:
The voltage of the batteries must be greater than 6 VDC to program properly.
5.
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.
6.
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.
7.
Scroll to the character “F” 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 frequency code.
8.
Enter the 1
st
digit of the frequency 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.
9.
Enter the 2
nd
digit of the frequency 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. Enter the 1
st
digit of the tone code (or 1
st
digit of the DQC 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.
11. Enter the 2
nd
digit of the tone code (or 2
nd
digit of the DQC 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.
12.
FOR DQC CODES ONLY
– Enter the 3
rd
digit of the DQC 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.
13. 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.
14. 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.
04
12
F
RE
QUE
NC
Y
CODE
T
ONE
CODE
