TM-9-2350-275-BD

M113 FAMILY CARRIER, PERSONNEL SELF-PROPELLED FULL-TRACKED

TECHNICAL MANUAL; OPERATORS, ORGANIZATIONAL, DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE; BATTLEFIELD DAMAGE ASSESSMENT AND REPAIR

TM-9-2350-275-BD

  TM-9-2350-275-BD - Page 116 of 223

TM 9-2350-275-BD
COMMUNICATIONS SYSTEM
4.
Make sure the MK-2096 Transient Voltage Suppressor is operational by checking for
a red light on the suppressor. If the light is lit, replace or remove the suppressor.
5.
Make sure the MX-7777 or MX-7778 Transient Voltage Suppressor is operational by
depressing the Battle-Override switch.
If the suppressor is bad, replace or repair as
necessary.
6.
Check the antenna coax cables from the radio to the MX-6707 to make sure they
are connected properly.
a.
If a defective cable is found, follow the procedures listed below:
(1) Replace the defective
cable in accordance with standard repair
procedures.
(2) Replace the defective cable with an acceptable replacement cable listed
in para. 11-35, then go to step 7.
(3) Repair the cable in accordance with the procedures in para. 11-30.
b. If a defective cable is not found, go to step 7.
7.
Replace radio with a known operational radio. If the problem no longer exists, then
the radio should be replaced or repaired using standard maintenance procedures.
11-10. OBSERVABLE SYMPTOM:
THE DISTANT STATION DOES NOT ANSWER
RADIO CALLS.
Detailed Assessment Steps:
1.
Make sure the radio is transmitting by listening for sidetone when transmitting.
2.
Make sure the tuning controls on the radio are set on the proper frequency by
tuning them to a different frequency and then resetting them on the assigned
frequency.
3.
Make sure there is sufficient transmitter power to reach the distant station by
transmitting on HIGH power and/or repositioning the vehicle with the whip antenna
untied.
4.
Check radio by attempting to communicate on an alternate frequency.
a.
If communications are adequate on the alternate frequency, go to step 6.
b. If there are no communications on the alternate frequency, go to step 5.
11-10


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