Olympian
™
Mobile User’s Guide
©
2005, Midland Radio Corporation
13
2-tone Operation
2-tone signaling allows individual or group calls to be made to
your radio. The radio may have been programmed to mute all
receive signals until a 2-tone signal has been decoded. When
the programmed 2-tone signal is decoded, the Tx/Busy indicator
will blink green, a beep sequence may sound, and subsequent
receive audio will be heard over the speaker. The radio may be
programmed to mute the speaker again after a programmed
time, or you may press and hold the programmed Call Reset
function button to mute the radio until it receives a new call.
Consult your dealer or communications coordinator for
further details on how your radio has been programmed
for 2-tone operation.
2-tone signaling allows users to receive only calls
intended for them. However, more than one radio
transmitting at a time will still cause interference. Do not
transmit if the Tx/Busy indicator is illuminated green or
amber. Wait until the channel is clear before transmitting.
Transmitting to Other Radios
Before transmitting, the FCC requires you monitor the
channel to make sure it is clear. Transmitting while
someone else is transmitting will create interference
and disrupt both conversations.
Follow these steps to transmit to other radios.
1.
Monitor the channel by pressing the programmed function
button. Depending on programming the monitor button may
disable 2-tone, CTCSS, DCS or noise squelch to allow you
to check for channel activity. Channel activity is also
indicated by the Tx/Busy indicator.
2.
If the channel is clear, press and hold the push to talk (PTT)
switch on the side of the microphone.
