*15. HF radio set (AN/ARC-199) - Check as follows:
control panel) - No. 5 position.
b. RADIO MON -5 switch - ON.
c. HF/VOW switch (instrument panel) - HF.
d. Frequency - Select test frequency (or
e. Volume - Set as desired.
Squelch - Set as desired.
g. Transmit power - Set as
h. Tuning mode - Initiate as required: Tuning
sequence should last no more than 3 sec.
Establish communications with
ground station at least 150 miles distant on
at least three frequencies (one each from
the lower, middle and upper frequency
possible, on USB and LSB. Obtain signal
quality reports from the other station and
note received signal quality.