One more time: Trilithoc: Cheap little truck mounted units and most MSO's use these. I have had wonderful success with them. Never had any problem finding leaks with them. They work fine, and you can take them out of the holder, put the rubber antenna on them and check for leaks at the demarc. DO I HAVE TO SAY IT LOUDER.
This is CABL.com posting #278905. Tiny Link: cabl.co/mbkID