TM 55-1510-220-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
F.
AVIONICS FLIGHT CHECKS (CONT)
*5. UHF radio set - Check as follows:
K3-7
a.
Altitude - 1200 feet above ground level (AGL).
b.
Transmitter selector switch - #3 or #5.
c.
Function selector switch (UHF command set) - BOTH.
d.
Frequency selector switches - Select required test frequencies.
e.
Mode selector - As required.
f.
Volume control - As required.
g.
Squelch switch - As required.
h.
Fly aircraft to a point 35 nautical miles away from test station.
i.
Communicate with test station when 20 miles away and again at 35 miles.
j.
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.
k.
Repeat procedure for frequencies in low, middle, and high ranges.
*6. VHF radio set - Check as follows:
K8-9
a.
Altitude - 1000 feet AGL.
4-24
