[Icom] Strange IC-765 40 meter problem

Fri, 16 Aug 2002 23:54:56 +0100

Hi Joe if I remember correctly I told you about the problems with the
insulators on their beams especialy the older one could you have put by
error 20 mtr pw\r into it ...I dont know if you run contests and have other
ops and this could happen unless fool proof system in the switching
arrangement the burn could be under the insulator to the tubbing.
    Check it close when you take it down all insulators they made a lil
change in the way the linear loading is so the high voltage points not at
the insulators but if you put another frequency on it that changes especialy
on 20s.
Good luck  joe
Steve k2SB
----- Original Message -----
From: "Joe Stepansky" <[email protected]>
To: <[email protected]>
Sent: Saturday, August 17, 2002 00:38
Subject: RE: [Icom] Strange IC-765 40 meter problem


> At 02:43 PM 7/28/2002 -0400, you wrote:
> >I agreed also, which is why I went back up this morning.  Couldn't see
> >anything at all on the Discoverer 7-2 that was corroded, oxidized,
folded,
> >spindled, mutilated, etc.  After 13 years the thing appears to be in
> >excellent shape.  Doesn't mean there still isn't something up there, but
> >I'm not sure how I could look any more closely at the full length of both
> >elements and the boom.  And the wind has kicked up today with no ill
effects.
>
> Just realized that I'd bothered everyone with this issue several weeks ago
> and never told you what we found.  My 40 meter problem is definitely NOT
> with the IC-765.  Talked with Hy-Gain/MFJ (which I should have done
before,
> but nobody ever gave me credit for having brains), and they believe it's
> probably the insulator(s) between the driven element and the boom.  If the
> insulator is cracked or otherwise in disrepair, the element and boom may
be
> touching (electrically) briefly, giving all the momentary high SWR and
poor
> reception conditions I've noted.  It's the best explanation I've heard so
far.
>
> As much as I hate to do it, I'll get the lift again, take the element off
> the boom and clean everything up.
>
> Thanks for all the suggestions!
>
>
> 73, Joe KQ3F
>
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