TM-9-2350-273-BD M60 M48 Battle Damage Assessment and Repair Download
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TM 9-2350-273-BD COMMUNICATIONS SYSTEM 11-20. FIBERGLASS WHIP ANTENNA REPLACEMENT General Information: Since it is not practical to splint a broken fiberglass whip, this procedure gives instructions for construction of a field expedient antenna if no other antenna is available. Limitations: ● Loader’s hatch cannot be completely closed. ● May result in degraded performance. Personnal/Time Required: ● 1 soldier ● 30 minutes Materials/Tools: ● Cable, coaxial, RG-8 (NSN 6145-00-161-0887) or RG-58 (NSN 6145-00-161-0908), 20- foot length ● Pencil, nail or sharp stick ● Pole, wooden or stick, 10-foot length ● Rope ● Tape electrical Other Options: ● Utilize the R-442 auxiliary receiver cables between receiver/transmitter. ● Replace antenna with: field expedient Procedral Steps: 1. Measure off and mark but do not cut metallic whip antenna by exchanging coaxial ground plane antenna. (Refer to para. 11-21.) five feet of coaxial cable. 2. In one foot steps, strip the outer insulation from the cable to expose the braided shield wire. Use care so that the shield wire is not cut. 3. Bend the cable into a loop, holding it with one hand. Using a pencil or nail, and as close to the remaining insulation as possible, carefully separate the braided shield from the insulated center conductor. 4. Work the pencil or nail between the shield wire and center conductor to form a hole. While keeping the loop formed, place a finger in the hole and slowly pull the center conductor out of the shield. 5. Tape the center conductor to the top portion and the braided shield to the bottom portion of a ten-foot pole. Tape as necessary to hold cable securely in place. 11-21