Hi Guys,
I've had several Hy-Gain TH-3's over the past 30 years and never had a
problem with one. But I've now got a problem with the latest model: TH3-Mk4:
Running it on 15-meters with the amplifier on, the SWR starts out at 1.2 to
1 but as I transmit over a period of a few minutes the SWR gradually climbs
to over 2:1.
I've checked the traps and they are clean, I've checked the screws inside
the traps and they are tight and clean, I've tried replacing the balun with
the
same problem, I've replaced the coax... same problem. All connections
appear tight.
I even ran the antenna on saw horses until the SWR rose to over 2:1 and then
ran outside to check for hot spots! Nothing was hot.
I've tried different SWR meters too.
Any idears?
Thanks! 73 & Merry Christmas!
Dick- K9OM
**************************************See AOL's top rated recipes
(http://food.aol.com/top-rated-recipes?NCID=aoltop00030000000004)
_______________________________________________
Antennaware mailing list
Antennaware@contesting.com
http://lists.contesting.com/mailman/listinfo/antennaware
|