Checking Lead-In Cables

Checking Lead In Cables:

Table-1 Lead In Cable Resistance Checks:

In case of continued reception or noise complaints, always check the lead-in with a digital multimeter (DVM). If long jumper leads are not available, check center conductor continuity by jumping the antenna mast to ground and checking for continuity from the conductor at Radio to ground.

When checking resistance, cautiously wiggle the lead-in tip and cable. The above readings should always be obtained. If not, some portion of the lead-in is intermittent and lead-in should be replaced. Also try:
1. Running a braided ground strap to the antenna lead-in.
2. Changing the antenna lead-in.
3. Disconnecting the lead-in to check resistance.
4. Check in-line connection for corrosion or poor connection.