PROCEDURE TROUBLESHOOTING REFERENCE
AVIONICS FLIGHT CHECKS (CONT)
*7. UHF radio set - Check as follows:
a. Altitude - 1200 feet above ground level (AGL).
b. Transmitter selector switch - #3 or #5.
Function selector switch (UHF command set) - BOTH.
Frequency selector switches - Select required test
e. Mode selector - As required.
Volume control - As required.
g. Squelch switch - As required.
Fly aircraft to a point 35 nautical miles away from test
Communicate with test station when 20 miles away and
again at 35 miles.
At 35 nautical miles maintain communication with test
station each 10° while flying a 360° flat turn (not to exceed
5° bank). Communication should be uniformly loud and
clear through these tests.
Repeat procedure for frequencies in low, middle, and high
VHF radio set - Check as follows:
a. Altitude - 1000 feet AGL.