 |
|||
|
|
|||
|
Page Title:
Operational Checks |
|
||
| ||||||||||
|
|  TM 11-5820-518-20
( 8 ) Request a communications check
ante with the requirements set forth in TM
across the equipment frequency range (225,
38-750.
312, and 399 mc).
2-6. Operational Checks
(9) Check the clarity of the received sig-
nal, the sidetone, the accuracy of tuning, and
a. General. The preflight operational checks
the squelch operation at each frequency.
should be performed during engine warmup
(10) Request that the control tower furn-
in the order given below.
ish a signal on the guard receiver frequency
(243 mc).
b. Procedures.
(11) Set the function select switch to T/
(1) Perform the preliminary operating
R + G, and monitor the audio signal; normal
procedures given in paragraph 2-3.
audio should be heard.
(2) Set the radio set control function se-
( 1 2 ) If the radio set is used with adf
lect switch to T/R.
equipment, turn the 10-, 1- and 0.l-megacycle
(3) Turn the 10-, 1-, and 0.1-megacycle
(on the C4677/ARC-51X) or 0.05-megacycle
(on the C-4677/ARC-51X) or 0.05-megacycle
(on the C-6287/ARC-51BX) controls to ob-
(on the C-6287/ARC-51BX) controls to the
tain the desired operating frequency in the
control tower frequency.
MEGACYCLES indicator window.
( 4 ) Turn the C-4677/ARC-51X SENS
( 1 3 ) Set the function select switch to
control fully counterclockwise.
ADF.
(5) Turn the VOL control to the mid-
point of its range.
(14) Monitor the adf station and note that
bearing information is displayed on the adf
(6) Depress the microphone push-to-talk
equipment.
switch and contact the control tower.
(15) Set the function select switch to the
( 7 ) Adjust the SENS (C-4677/ARC-
proper position determined by the type of op-
51X) and VOL controls to obtain a clear and
eration desired (para 22) during flight.
comfortable audio level.
2-4
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals