Can you repeat the test with the tuner tuned to a low frequency like 80 or
160 meters?
Or how about inputting a signal on 28 mhz that should be about S9 with the
tuner properly tuned for that band and then seeing what it reads with the
tuner tuned on a band far away like 80 meters.
I find it hard to believe that tentec would not use the tuner in receive
also. This would not work very well for long wire antennas that are far
from resonant when untuned.
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 9:32 PM
Subject: Re: [TenTec] Orion II AT tuner question
> > So an easy test is to tune the tuner on a band such as 10
> > meters, and then listen on another band without tuning.
> > After determining relative strength of some signals, then
> > tune the tuner and see if things pick up.
>
> I posted earlier that MDS did not appear to be affected on any other band
> when the tuner was tuned elsewhere. Those tests were run with the tuner
> tuned up on 80M and 40M.
>
> I just ran the same test with the tuner "tuned" to 28.0 Mhz. HP 8640B
> signal generator, Daven 651 Step Attenuator, HP3400A True RMS voltmeter.
> AGC off, tuner enabled, yada.
>
> MDS on 1.8, 3.5, 7.0, 10.1, 14.0, 24.0, and 28.0 Mhz was -128 dB (plus or
> minus meter wiggle) across the board.
>
> Grant/NQ5T
>
>
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