Midland PRO902 Manual page 7

When radio is in key lock, only the volume function can be adjusted. The radio mode will
display "LC" if any button is pressed.
Volume
Press the ˄ or ˅ keys to increase or decrease the volume. The radio will beep with each
key press and the display will flash to indicate the volume setting. The volume level can
be set from 00 (min) to 09 (max). The display will stop flashing and return to the selected
channel display a few seconds after the last volume adjustment.
Selecting Channels
Press the ▲ or ▼ keys to step up or down through the channels.
Transmitting
To transmit, press the PTT button. Hold the microphone about 5-8 cm from your face and
speak at a normal voice level. The microphone is quite sensitive so it is not necessary to
raise your voice or shout. Release the PTT when you have finished talking.
IMPORTANT: Always listen to ensure the channel is free before transmitting.
CTCSS (Continuous Tone Coded Squelch System) and DCS
(Digitally Coded Squelch)
CTCSS (Continuous Tone Coded Squelch System) and DCS (Digitally Coded Squelch)
are squelch quieting systems that allow several groups of users to share the same channel
without disturbing each other. The system applies a continuous low-level tone to your
transmission and uses a matching tone decoder to control your receiver's Squelch. With
CTCSS or DCS enabled, the channel remains quiet to all incoming signals unless they
carry the correct tone. When a transmission with the correct tone is received, the squelch
opens and remains open for as long as the signal is present. When the transmission ends
the channel becomes quiet again. Transmissions that do not use the correct tone will not
to be heard. There are two tone sets installed in your PRO902 comprising 50 CTCSS and
104 DCS user-selectable tones.
The PRO902 allows CTCSS or DCS to be enabled or disabled on individual channels.
Note: The CTCSS/DCS tone you select will be used for all CTCSS/DCS enabled channels
in your radio.
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