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1-1
1. OPERATIONAL OVERVIEW
1.1 Controls
Description of controls
Control Function
PWR/VOL knob
• Turns the power on/off.
• Adjusts volume.
DISTRESS
button
Press and hold down the button more than four (4) seconds to transmit
the distress alert.
CALL key Transmits DSC messages.
ENTER knob
Rotate to choose menu items; push to register selection.
CANCEL key
• Cancels wrong data.
• Restores previous menu.
• Silences audio alarm.
• Cancels transmission, printing.
• Erases error message.
1/ RT/CH key
Switches to the radiotelephone (RT) screen. Press and hold down more
than five (5) seconds to set SSB: 2182.0 kHz/J3E.
2/DSC key Composes DSC TX message.
3/TEST key Executes daily test and TX self-check.
4/IntCom key Turns on/off the intercom with other Control Unit FS-2571C.
5/ ACK/SQ key
DSC: Switches automatic and manual acknowledge alternately.
Radiotelephone: Turns squelch on and off.
6/SCAN key
• Displays DSC screen.
• Starts/stops scanning of DSC routine frequencies, on the DSC standby
screen.