Bob,
Thanks for the information, I have been using the Y-Connection for
the past 4-5 years with my ONNI VI plus and my 89 and haven't gotten
any bad reports. I've also used the Loop. I'll have to listen around
with an additional receiver I guess. I thought that the Alpha would
stay switched until the RF disappears from the input. Otherwise I
should get with a Hot switch, I should get a Fault light on the Alpha
?
What is your pulse extender circuit ? Would you share it ?
I rearely use the amp on CW and use it at about 500-600 watts on RTTY.
I'm not a SSBer and don't use it there at all. Oh, well occassionally,
seldom etc.
Dave W7DPW
----- Original Message -----
From: "Bob Henderson" <bob@cytanet.com.cy>
To: <tentec@contesting.com>
Sent: Monday, May 24, 2004 1:40 PM
Subject: Re: [TenTec] Help please , Orion with Alpha 91B
> Dave
>
> What Ten Tec suggests for the Omni VI+ is not good! Here's
why.......
>
> The T/R switching in the 87A is very fast. It is pin diode
switching
> not mechanical relays. The T/R switching on the VI+ was timed for a
> mechanical vac relay. TX out from the VI+ drops before the
completion
> of a character element. If there is a mechanical delay in the amp
that
> matches this delay then no problem. However, the 87A is fast and
clips
> character elements in QSK which produces horrible clicks and
truncated
> elements. When I use my VI+ QSK I have to use a pulse extender on
the
> TX line interface to the 87A to avoid the problem. The Orion works
fine
> just connecting Amp key 1 on the Orion to Relay on the 87A.
>
> 73 Bob, 5B4AGN, P3F
>
>
> Dave W7DPW wrote:
>
> >Here's what AlphaPower says. You might want to investigate..
> >
> >http://www.alpha-amps.com/html/ampkey.htm
> >
> >and for the OMNI VI plus:
> >
> >http://www.alpha-amps.com/html/tentec.htm
> >
> >Dave W7DPW
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