I looked at the schematic. Antenna 1 comes directly to a jack. If you have
the tuner installed, there is a jumper from this jack that goes out directly
to the tuner. If you don't have the tuner, there is a jumper from this jack
that goes to the radio antenna switching logic. The end result is the
internal tuner is used on both the transmit and receive path but only for
antenna 1.
Carl Moreschi N4PY
121 Little Bell Drive
Bell Mountain
Hays, NC 28635
----- Original Message -----
From: "Grant Youngman" <nq5t@comcast.net>
To: "'Discussion of Ten-Tec Equipment'" <tentec@contesting.com>
Sent: Friday, March 31, 2006 12:57 PM
Subject: Re: [TenTec] Orion II AT tuner question
> The block diagrams do not show it in the receive signal path.
>
> I've never observed issues with the tuner tuned last for 80M and the
> receiver on 20M, for example. If I use my external tuner in that way, 20M
> goes nearly dead.
>
> Grant/NQ5T
>
> > I suspect that it will effect both TX and RX. However, it
> > will probably not tune until you transmit. So if you switch
> > bands, it will not tune RX until after you TX.
>
>
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