ON/OFF/VOLUME CONTROL
•
turns the SMX-4150 on/off and adjusts the audio output level
SQUELCH CONTROL
•
silences the radio's receiver when no signal is being received
•
maximum squelch setting is at full clockwise rotation
CHANNEL CHANGE BUTTONS
•
assigned (programmed) channels may be selected by pressing either of
the channel selector buttons; these buttons will scroll you through the
programmed channels in your radio
S FACILITY PUSH BUTTON
•
used only on system mobiles
P FACILITY PUSH BUTTON
•
used only on system mobiles
AUXILIARY SPEAKER BUTTON
•
silences internal speaker and connects the Auxiliary Speaker (requires
auxiliary option board)
MONITOR BUTTON
•
disables tone or digital coded squelch options (only in receive mode)
•
controls display intensity
TRANSMIT LED
•
indicates transmission when RED backlight is on
•
will flash to indicate the synthesizer is out-of-lock
BUSY LED
•
indicates activity on receive channel when YELLOW backlight is on
CALL LED
•
indicates activity with the correct tone or code on the receive channel
when GREEN backlight is on
CHANNEL DISPLAY
•
the BLUE-GREEN display is easily visible under high ambient light
conditions
•
- indicates: channel number
