[1000mp] IM due to tuner in MkV

[Roy Westra]

Hi Mac,
At what time of day does he hear these stations? Sometimes I hear shortwave
broadcast stations early in the morning on 40 meters but they go away later
as the band warms up. If that's not the problem has he tried using
the various filters to block them out? Also Inrad Inc. (
http://www.inrad.net/home.php?xid=692b5e4d46838cf39b9c7574f3762a35) has an
IM mod and also sells roofing filters.
Roy
AA6QQ

On Sun, May 30, 2010 at 7:02 PM, J. C. Mc Laughlin <jcm at power-net.net>wrote:

> Dear group:
>
> A colleague of mine just bought a used FT1000 MkV (200 watt version).  He
> found significant IM on receive when the tuner is asserted.  That is to
> say,
> short wave broadcast stations appear to be way out of their band.
>
> I speculate that a non-linearity exists somewhere in the tuner.  Could be a
> corroded relay contact or a cold solder joint.
>
> Has anyone had this experience?  If so, what did you find and what was the
> cure?  Thank you.
>
> 73,    Mac    N8TT
>
>
> J. McLaughlin;  Michigan, USA
> Home:  JCM at power-net.net
>
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