TM 55-1680-351-10
NOTE
Direction finding in this mode is difficult. The
primary purpose is to ensure continued search
operations. Battery life is reduced to an extent
by voice or mew operation.
To transmit VOICE or MCW. set the function switch counterclockwise to
the VOICE/MCW 243.0 position and either verbally repeat the word
"Mayday" at 2 or 3 second intervals by pressing the PUSH TO TALK
pushbutton or send coded "SOS" by pressing the MCW pushbutton
(modulated carrier wave). Set the VOL control to the MAX position.
NOTE
Attempt to make the code ("SOS') sidetone well
defined and rapid enough for experienced
operators to easily recognize the code. It will
have a "di-di-dit, dah-dah-dah, di-di-dit" sound
with spacing between groups. Refer to the code
explanation on the rear panel.
3-14
