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Re: Best Sat rig 847 desensing



I have found the complete opposite of what McCoy found.  I had desense
problems with the 736 but never had a problem with the 847.


John
N2HMM


----- Original Message -----
From: "McCoy Phillips" <mphill@tsixroads.com>
To: <Ke4yyddave@aol.com>; <amsat-bb@AMSAT.Org>
Sent: Saturday, October 21, 2000 9:02 AM
Subject: Re: [amsat-bb] Best Sat rig 847 desensing


>
> ----- Original Message -----
> From: <Ke4yyddave@aol.com>
> To: <amsat-bb@AMSAT.Org>
> Sent: Saturday, October 21, 2000 7:06 AM
> Subject: Re: [amsat-bb] Best Sat rig 847 desensing
>
>
> > A picture of the Kenwood TS-2000 is on the back cover of Nov QST.
> >
> > Check the archives of the FT-847 bulletin board and you will find
several
> > posts concerning mode JA desensing.  The FAQ has info on this problem
also
> > but the attribute the problem to third harmonics and the close proximity
> of
> > the antennas. In my rig, this was not the case as I tried antennas over
> 100
> > ft apart, dummy loads, grounding and everything else I could think of.
My
> > 820 does not have a desensing problem with my station configuration.  I
> can
> > use the 847 for tx and the 820 for rx with no problem and vice versa.
> >
> > I discovered a "spur" was transmitted by the 847 at 145.950 and was
> received
> > at 435.850.  The rig was returned to yaseu for warranty service twice
for
> > this and other minor problems not related.  The rig was kept for over 30
> days
> > the first time and the desensing problem was not addressed.  The second
> time
> > the rig was kept for 45 days waiting for a "fix from Japan."  Although
the
> > spur was moved out of the satellite band, I could still hear an increase
> in
> > the noise level on 70cm when the mic is keyed on 2m.   I asked Yaseu
> several
> > times to replace the unit to no avail.
> >
> > I am not active on mode JA at the present time, but when I am, I find it
> much
> > easier to use separate rigs for tx an rx.
> >
> > David KE4YYD
> > ----
> > Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>
>  I had the same problem as David on an early model 847. After Yaesu
couldn't
> fix it, they had the dealer,,now out of amateur radio, RT Systems, to
refund
> my money. I'm now using an FT-736, which I think is a better rig for
> satellite work than the 847. That's my 2 sense.
> McCoy--N5YAV
>
> ----
> Via the amsat-bb mailing list at AMSAT.ORG courtesy of AMSAT-NA.
> To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@amsat.org
>

----
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