TM 1-1510-225-MTF
PROCEDURE
TROUBLESHOOTING
REFERENCE
(b) MENU key - Depress.
(c) Upper and lower soft keys -
Depress as required to adjust dis-
play brightness.
(d) CLR key - Depress.
(e) Cursor movement control knob
and cursor field value knob - Set
required test frequencies.
(f) Transmitter selector switch
(audio control panel) - UHF.
(g) Altitude -
1200 feet above
ground level (AGL).
(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).
Verify that communication is uni-
formly loud and clear through
these tests.
(k) Repeat procedure for frequencies
in low, middle, and high ranges
on both FM and AM.
* 5. VHF radio set - Check as follows:
(a) Altitude - 1000 feet AGL.
(b) Transmitter selector switch
(audio control panel) - VHF 1 or
2.
(c) Frequency selector - Set desired
frequency.
K8-9
4-11
C1
