Check the Alpha web site- they used to have a suggested keying circuit for
the pin-diode switched 87A. My vacuum relay-switched 99 works great in the
keying loop.
73, Duane
Duane Calvin, AC5AA
Austin, Texas
www.ac5aa.com
-----Original Message-----
From: tentec-bounces@contesting.com [mailto:tentec-bounces@contesting.com]
On Behalf Of Allan Taylor
Sent: Sunday, December 13, 2009 1:28 PM
To: tentec@contesting.com
Subject: [TenTec] using OmniVI with Alpha 87A
Yet another question. The Alpha 87A amp does not have a QSK keying
loop as do the TT amps. Is there
a best way to key it from an OmniVI? Has anyone done this? I am
thinking that the TX REQ signal
from the VI can be used to key the amp but wonder if there are any
other issues or solutions.
--
73 Allan K7GT
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