Section 3
Programming
14
3.2
Readout Current Frequency, Tone and Selective Signaling Codes
1. 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.
2. 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.
3. Press and release the
PROGRAM
button (See
Loudmouth
®
receiver assembly
on page 2 for location). The radio will
immediately begin to display a series of digits; with each digit separated by a hyphen.
4. Write down all the digits. The first two digits indicate the frequency code and the next two digits the tone code;
see
Table 1
and
Table 2
on page 16.
In this example an LM-U450 is progr
ammed to operate on the “Brown Dot” frequency of
464.500 MHz (Frequency code “04”) with 100.0 Hz tone (Tone code “12”).
FREQUENCY CODE
TONE CODE
5. If a 5
th
digit is displayed, the Loudmouth
®
has been programmed for DQC and the last three digits indicate the DQC code;
see
Table 3
on
page 16.
In this example an LM-U450
was programmed to operate on the “Brown Dot” frequency of
464.500 MHz (Frequency code “04”) with a DQC code of “723”.
FREQUENCY CODE
DQC CODE
6. If more than 5 digits are displayed, the radio has been programmed for Selective Signaling Decode. The frequency and
tone codes will be displayed, followed by a “C”, then the radio will display either the 2-digit, 2-Tone paging code (
see
Table
4
on 17
) or the 3-7 digit Selcall code
.
In this example an LM-U450
was programmed to operate on the “Brown Dot”
frequency of 464.500 MHz (Frequency code “04”) with 100.0 Hz tone (Tone code “12”) and 2-tone paging decode
frequencies of 330.5 Hz and 569.1 Hz (2-
Tone code “91”)
FREQUENCY CODE
TONE CODE
PAGING CODE
7. If the Loudmouth
®
is PC programmed with any frequency not listed in
Table 1
on page 16, the radio will display a code "99"
for the frequency code. The PC programmer will be required to readout the radios frequency programming.
8. Normal radio operation resumes after the programming information has been displayed.
2013 FCC Narrowband Mandate
On January 1, 2013, pursuant to the FCC Narrowband mandate, you will no longer be allowed to operate wideband
transmitters (25 kHz) in the frequency bands from 150 MHz to 512 MHz.
Ritron will begin manufacturing narrowband compatible Loudmouth
®
starting in December 2012. At that time, customer
orders will begin to be filled with radios manufactured for FCC narrowband compatibility. Specifically, table frequencies will
be converted to narrowband. Since Part 15 receivers are not subject to the narrowband mandate, you will still be able to
set the Loudmouth
®
for wideband operation via field programming (See
Section 3.5
– Program Loudmouth
®
Features
), or
by using the PC Programmer.
These radios will be clearly marked as “FCC Narrowband Compatible”.
For a complete list of all Ritron radios capable of narrowband operation; a Ritron FAQ on the subject, and various links on
the FCC website dealing with Narrowbanding go to:
www.ritron.com/narrowband
If you have any questions contact us at 1-800-872-1872.
