Julio,
It sounds like one of the screws in the 10 meter (the inner) traps is loose
or intermittent.
73,
Joe, W1JR
At 06:48 PM 3/23/2002 -0500, Julio wrote:
>I'm having a problem with a A3S antenna and I'm wondering if anyone has run
>into this before. The problem is that signal levels fade way down on 10M.
>Signal strength can be restored by hitting the PTT for just a second or by
>rotating the antenna. As the antenna rotates you can hear the signal level
>changing. It sounds almost like a rapid flutter.
>
>I've tried to eliminate everything in the line except the rig and the
>antenna. I've also determined that the problem exist with 2 different
>radios. The fading problem doesn't happen on 15 or 20M. In addition SWR
>mesurements appear to be normal on all 3 bands.
>
>I've recently reinstalled the antenna on an 89' US Tower with all new coax
>and connectors and the antenna worked very well for several weeks before it
>began acting up.
>
>Any body have any ideas?
>
>Julio
>
>
>
>
>_______________________________________________
>Towertalk mailing list
>Towertalk@contesting.com
>http://lists.contesting.com/mailman/listinfo/towertalk
|