[TenTec] Possible explanation for problem(s) with Jupiter finals

[Dave McClafferty]

I presume this was the April issue of QST!

Dave, VE1ADH

----- Original Message -----
From: "William F. Mansey; WA2PVK" <res0wsci@verizon.net>
To: <TenTec@contesting.com>
Sent: Monday, April 15, 2002 2:00 PM
Subject: [TenTec] Possible explanation for problem(s) with Jupiter finals


> Hello All,
>     I recently read some items in "QST" that could possibly explain the
> problem with finals.  These items referred to the effects of gravity on RF
> energy.  Perhaps, therefore, the damage is caused by the RF left in the
> cable draining back into the rig.  I suppose that forcing RF back through
> the finals is causing excessive heating. This effect would obviously be
> worse with higher antennas.  Perhaps a T/R switch with a third position
> would prevent problems.  The extra position would momentarily switch the
> antenna to a dummy load (to safely absorb the RF in the cable) before
> switching to receive.
>     I got the impression, based on my interpretation of the information,
> that RF at lower frequencies is "heavier" than RF at higher frequencies.
I
> DISAGREE - - - If that were true VHF would be great for DXing!!!  VHF is
> line of sight THEREFORE this RF is most certainly heavier or it would go
> farther than it does!!!      73; Bill, WA2PVK  :-)
>
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