18
BARRETT PRC-4090 TACTICAL HF SDR TRANSCEIVER - BASIC OPERATION
Starting the Transceiver
Ensure the transceiver is attached to a power source appropriate for your sit-
uation.
Turn the switch from the off position
to the on position.
Reverse the procedure to power off.
LED status:
Power on: Constant green
Emergency call: Flashing green (rapid
flashing green when transmitting)
Zeroise: Flashing red, then solid when
complete
Keypad
Key
Function
Channel Up /
Scroll up
Channel Down /
Scroll down
Scroll left and right
Enter /
Set a menu item
Key
Function
Make a call
Clear /
Back one step
Volume Up
Volume Down
There are seven keys on the keypad. Some keys have multiple functions assigned
to them depending on when or how long the key is pressed.
Lift and turn the switch to initiate
an emergency broadcast (page
27) or to
zeroise the
transceiver