Well, if this is the early version and the problem is arcing boom
insulators, then you either need a new antenna or a serious modification
using a different driven element mounting scheme that is both strong and
insulated and does not arc. N7KA and I did a modification on one of these
about 40 years ago and it worked OK but I wouldn't bother again. I would
just replace it with a HyGain Discoverer.
Stan
w7ni@easystreet.com
> Wayne,
>
> A problem that occurs at only 200W will almost certainly be in the driven
> element. You may have to take it down and find the loose hardware, bad
> connection or clean up one of the loading coils, but you don't have to buy
a
> new antenna!
>
> 73,
>
> Jim K1IR
>
> [Towertalk] Hy=Gain 402BA-S
> Wayne F. King wfking@worldnet.att.net
> Sun, 21 Apr 2002 05:49:32 -0400
> Previous message: [Towertalk] HDR-300
> Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
>
> HI Folks,
>
> I have a HY-GAIN 402BA-S 40 meter 2 el beam. It works fine on RX and 100
> watts TX. However it does not like high power anymore. Instant SWR
> infinity with the PA on. Even at 200 watts it appears to arch over. As
> long as I run less then 150 watts it's fine.
>
> It's mounted at 110' and 15' above a Mosley Pro-57A. It's feed with 1/2"
> heliax and a RG-214U jumper to a WX0B 1.1 balun. I checked the feedline
> to the balun with a 50 ohm load and it's fine. The balun checked out
> fine. In fact I substituted a coax balun and still the same problem.
>
> I thought I would run this by you folks before I take it down. Hopefully
> someone has a handle on this and maybe a fix other then buying a new
> antenna.
>
> Thanks in advance.
>
> Wayne N2WK
>
>
>
> Previous message: [Towertalk] HDR-300
> Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
>
>
>
> Jim Idelson K1IR
> email k1ir@designet.com
> web http://www.designet.com/k1ir
>
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