Grant,
Is that on the Orion II or the Orion? On my original Orion with
the LDG-sourced tuner, there is a noticeable improvement (or attenuation)
of the RX signal after the tuner has been exercised. (Attenuation in the
case of cross band split.)
73, Duane
On Fri, 31 Mar 2006 16:53:04 -0600 "Grant Youngman" <nq5t@comcast.net>
writes:
> > 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.
>
> That is what is shown in the schematics, but there is no schematic
> of the
> tuner board, which may have a shorting relay that is only opened on
> transmit.
>
> Regardless, there is no substantive difference in MDS with the tuner
> in or
> out of the circuit, regardless of where the tuner was last set.
> Which means
> that there wouldn't appear to be a need to transmit into the tuner
> to reset
> it every time you changed bands, as far as receive capability is
> concerned
> -- and that is my experience. And also would indicate to me that
> on
> receive, the tuner is effectively not part of the signal path.
>
> Without a tuner schematic, we're feeling the side of the elephant
> again. If
> someone knows for sure, it would help, but it has no effect on
> receive MDS.
>
> Grant/NQ5T
>
>
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>
--------------------------------------
Duane Calvin, AC5AA
Austin, Texas
http://home.austin.rr.com/ac5aa
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