I recently replaced my antennas and was curious, was there 4 in total (2 for each antenna)? When I took my old antenna's off I noticed one of them didn't have any washers which explains it's droopiness. I took some rough measurements with a micrometer. (outer 6.11 mm x inner 2.65 mm x thickness .20 mm) If anyone finds a source please let me know as well. For now I sparingly installed one on each antenna and can tell it probably needs 2. I also notice modern devices don't even come with those copper washers anymore i.e. digital tv antenna. By the way I may have found almost a perfect match for replacement antennas for a Conion 100 (and equivalents) $5 for the pair. They are the correct length even down to the extensions so they lock nicely in place. The base is wee tiny bit thinner but hardly noticeable. In my picture below the top antenna is the original one the lower is the replacement (in the away position). These are from the UK so they take awhile if your are in the U.S. but worth the 2 week wait and are 100% better fit then the fs-12h model number I have seen many posts recommending.
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I wonder if I should post this somewhere else in the forum?
@Transistorized these are the ones I was telling you about.