Ritron Patriot RPM-160 User manual - page 16
The Monitor button may be programmed one of two ways; (see your dealer for programming)
1. Toggle - In toggle mode, when the Monitor button is pressed and released, the radio is switched
between 2-Tone decode, coded squelch and carrier squelch. If one beep is heard when the button
is pressed and released, the radio is in coded squelch. If only two beeps are heard when the
button is pressed and released, the radio is in carrier squelch. If three beeps are heard, the radio
is in 2-Tone decode squelch.
2. Momentary – In momentary mode, when the Monitor button is pressed and held, the radio is
switched to carrier squelch. When the button is released, the radio reverts back to coded squelch.
Also, you will only hear two beeps when the button is pressed then one beep when the button is
released. To revert the radio back to 2-Tone decode, turn the radio off then back on.
Receiving a 2-Tone Page
To receive a 2-Tone page, select the channel programmed for 2-Tone decode. When the correct
2-Tone signal is received, the RPM mobile will generate a ringing tone and a “C” will be displayed in
the LED display to indicate that a call was received. At this time the radio is in either tone squelch( if
programmed with QC or DQC) or carrier squelch. To reply, remove the microphone from the hang-up
clip and begin speaking into the microphone while pressing and holding the PTT button. When you are
finished transmitting, place the microphone into the hang-up clip. If there is no activity for 16 seconds,
the radio will automatically reset(if Auto Reset is enabled) to 2-Tone decode and alert you with a single
beep. If you do not respond within 16 seconds after the decode ringing tone, the radio will
automatically reset(if Auto Reset is enabled) to 2-Tone decode and generate a single beep.
If Auto Reset is not programmed, you can reset to 2-Tone decode mode by:
1. Turning the radio off then back on.
2. If one of the front panel buttons is programmed for Monitor/Toggle, press and release the button
until you hear three beeps.
SCAN:
Scanning allows you to continually check for transmissions on multiple channels over a short amount of
time. The RPM mobile has two types of scanning. For both types of scanning, all channels that are to
be scanned must be marked during programming as a scan channel. Also, in order to enable and
disable scanning, one of the programmable front buttons must be programmed as a SCAN button.
The first type of scan is normal scan. In normal scan, when the SCAN button is pressed and released,
all channels programmed as a scan channel are incrementally checked for a received signal. If no
signal is present, the display is incremented to the next channel and so on. If a signal is present, the
radio stops on the channel until the signal is no longer present, and then resumes scanning.
The second type of scanning is priority scan. In priority scan, when the SCAN button is pressed and
released, all channels programmed as a scan channel are incrementally checked for a received signal.
If no signal is present, the display is incremented to the next channel and so on. If a signal is present,
the radio stops on the channel until the signal is no longer present, and then resumes scanning. Also,
during the time the radio is stopped on a non-priority, the radio will automatically go to the priority
channel and check for a signal. If a signal is present, it will interrupt the non-priority channel and allow
you to hear the broadcast on the priority channel. When that is finished, the radio will return to the non-
priority channel to check for a signal. If no signal, the radio continues with the scanning cycle.
Nuisance Channel Delete – When scanning, if a channel is busy for an abnormal amount of time, the
busy channel can be temporarily deleted from the scan function by pressing and releasing the front
panel button programmed for Nuisance Channel Delete. To add the channel back into the scan, simply
turn the radio off and back on.
NOAA WX: (This feature is only available with the RPM-160) To receive your local NOAA weather broadcast, the
RPM must be programmed to your area NOAA frequency and one of the front panel buttons must be
programmed for NOAA WX. Press and release the button programmed for NOAA WX and the radio
will automatically begin receiving on the pre-programmed NOAA weather frequency for your area.