[TenTec] Omni-VI QSK with Alpha 87A

Glenn AE0Q gm5bkc at gmail.com
Tue Dec 6 11:42:24 PST 2011


The note specifically states that the connection described (a diode off the
TX EN loop) is only for the Alpha 87A and 89, which use PIN diode switching
with almost no delay times.
  It wasn't intended for amps with T/R relays!

Glenn AE0Q


On Tue, Dec 6, 2011 at 8:18 AM, Paul Christensen <w9ac at arrl.net> wrote:

> I really wish that information would disappear, but the Internet is
> forever...
>
> Barry and other's -- Please be careful with this set-up. I was part of the
> original discussion back in 1998 together with Terry, W6RU.  The concept
> looks great on paper, but results in hot-switching on the trailing RF
> envelope with some Alpha amps.  I detected the problem when the Jennings
> RJ-1A failed in my Alpha 77Dx.
>


-- 
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