TM 1-1510-225MTF
K10.
K11.
K12.
K 1 3 .
K14.
K15.
K16.
HF transmitted or received signal or sidetone not
clear.
a. Defective HF receiver-transmitter.
b. Defective antenna cabling.
c. Defective HF control panel.
d. Defective audio control panel.
No VOR audio tone heard in headset.
a. Defective VOR receiver.
b. Defective VOR control panel.
c. Defective audio control panel.
VOR receiver inoperative.
a. No power to equipment.
b. Defective VOR control panel.
c. Defective VOR receiver.
Marker beacon signals not heard in headset.
a. Defective audio control panel.
b. Defective marker beacon volume control or sensi-
tivity switch on pedestal extension.
c. Defective VOR receiver.
ADF radio set inoperative.
a. No power to ADF radio set.
No ADF audio heard in headsets.
a. No Rower to equipment.
b. Defective ADF receiver.
c. Defective ADF control panel.
d. Defective ADF antenna.
Quality of ADF reception is poor.
a. Defective ADF control panel.
b. Defective audio control panel.
c. Defective ADF receiver.
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