page
9
CHANNEL SELECTION
The Ritron RPM 60 Series Mobile provides 35 channels, each of which may
be
dealer
programmed. The first nine channels appear on the display as
1 through 9, and subsequent channels are displayed as A through Z (with
b
and
d
displayed as lower case letters).
To scroll forward or backward through the channels press the assigned
Programming Function Button (
PFB
). Any time the display scrolls to Channel
1, a long tone is emitted to let you know you have reached Channel 1
(Channel 1 Marker Tone). This allows you to change channels without
looking at the display.
Note: If a
PFB
is assigned a
long
press to perform Channel Up or Channel
Down function:
Press and
HOLD
the
PFB
to automatically scroll through all
programmed channels
Release the
PFB
to stop on the desired channel
OPERATING MODES
You can hear calls with the RPM mobile in receive mode, and broadcast
your voice with the RPM mobile in transmit mode.
RECEIVE:
The RPM mobile can receive broadcasts while the microphone PTT button
is not being pressed. Whether you hear these broadcasts depends upon
the volume and squelch settings
.
VOLUME:
You can set the volume by one of two ways.
1. Press and release the programmable buttons while adjusting
the volume control, using the tones as a reference.
2. When a received broadcast is heard, adjust the volume control
to a desired level.
OPERATION
(CONTINUED)
SQUELCH:
Squelch mutes the speaker so that interference from licensees outside of
your group or background noise does not bother the user. There are three
(3) types of squelch in the RPM mobile. The first is carrier squelch that mutes
the speaker if no on-channel transmissions strong enough for the radio to
detect are present. The second is Quiet Call (coded) squelch. This mutes the
speaker unless the radio detects an incoming signal that carries the same
Quiet Call (QC) code as programmed for the selected channel. The third is
2-Tone decode. This mutes the speaker unless the radio detects an
incoming signal that carries the same 2-Tone code as programmed for the
selected channel.
When you remove the microphone from the hang-up clip, Quiet Call squelch
and 2-Tone decode are disabled and the radio reverts to carrier squelch,
allowing all on-channel transmissions strong enough for the radio to detect
to be heard. (This is true, unless the radio is programmed for Channel Monitor
Lock-Out)
MONITOR:
Monitoring lets you hear all on-channel transmissions that are strong
enough for the radio to detect.
Monitoring a Channel Programmed with Quiet Call
(Coded Squelch)
If the channel is programmed with Quiet Call coded squelch, you can
monitor the channel one of two ways.
1. Remove the microphone from the hang-up clip, or;
2. Press and release the
PFB
assigned to the Monitor function.
The Monitor button may be programmed one of two ways; (see your
dealer for programming)
1.
Toggle
- In toggle mode, when the
PFB
is pressed and released,
the radio is switched between coded squelch and carrier squelch.
1 beep means
coded
squelch
2 beeps means
carrier
squelch
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