when i have lost the low end in the past, its been the sheath, faceplate, etc. ac will jump a bad/corroded connection,but will lose more. check your math..if span 1 @ 100' loses 1 volt on input, and span 2 loses 6, you know where to look. a tdr will find the water from cracked sheath, and the sweep will also. the trick is dont take anything apart...just test at point a, b, and c, and record your readings. non-conforming db loss can show you the problem also.
> Got a pesky lil' problem with a leg of feeder. From time to time it loses lowband but not AC. When you pull and re-install a faceplate it resumes working properly. Have shot a couple spans with TDR and see no adverse traces. Since the problem goes away with the removal of a faceplate it's hard to track and it sometimes wont came back for months. Anyone here had experience with this and have good solution? I'm thinking that we might have to tear apart every connector and look for slightly short center conductor or broken pin and check all the seizure screws down the line as well which would be a real pain in the ass..
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