Ritron Patriot RPM-160 User manual - page 17
TRANSMIT
Make sure that the channel is not busy before you begin transmitting. Check the TX/Busy LED, which flashes
green if the channel is busy. This occurs regardless of any code signaling programmed. Normally, you should not
transmit until the channel is clear.
To transmit, remove the microphone from the hang-up clip. Press and hold the PTT switch on the side of the
microphone, and talk in a normal tone with the microphone held two to three inches away from your face. Pressing
the PTT button activates the transmitter and lights the TX/Busy LED a constant red.
If, when pressing the PTT button, error tones are heard in the speaker, check for the following conditions:
1. The channel is programmed as a Receive Only channel.
2. The channel is programmed with Busy Channel Lock-out and the channel is busy.
The front panel buttons can be programmed to automatically transmit various tone signaling formats. The features
available are:
Encode Call tone – When the button is pressed and released, the radio transmits a ringing tone to alert users in
your group that a call is coming through.
Encode 2-Tone - When the button is pressed and released, the radio transmits a pre-programmed 2-Tone signal.
Encode 5 or 7 tone(Selcall) - When the button is pressed and released, the radio transmits a pre-programmed 5 or
7-Tone signal.
Encode DTMF ANI - When the button is pressed and released, the radio transmits a pre-programmed DTMF tone
signal. The RPM mobile may also be programmed to transmit a DTMF signal every time the
PTT button is pressed.
Encode Emergency Call - When the button is pressed and released, the radio transmits a pre-programmed multi-
tone signal to alert all users in your group there is an emergency.
Other functions that the front panel buttons may be programmed for:
Talk-Around - When the button is pressed and released, and if you are operating on a repeater channel, the radio
will transmit on the receive frequency when the PTT button is pressed. This will allow you to talk in
simplex mode rather than occupying the repeater frequency.
High/Low Transmit Power – When the button is pressed and released, the radio’s transmit power will switch from
high to low and vise versa. An “h” or “L” will appear in the display when the button is
pressed to indicate the power level.