Topband: Rotator creating spur on 1820

[K4SAV]

Likely all the spurs you see on 160 that are caused by AM stations will 
land on 10 kHz increments because the stations are spaced on 10 kHz 
increments.  I identified one of the stations that was a big contributor 
to my problem and that was on 1730.  I haven't found the other station 
yet.  I expected the station on 890 to be a contributor since it is only 
1700 ft from my antenna but I don't think it is the one.  (It is a 
contributor to the spur that happens on 3510).  Regardless of which 
stations are involved, the main problem is that the mixing is being 
created near my rotator, and probably inside it somewhere.  I have to 
kill the mixer somehow. More than likely the stations are clean.  It 
will be interesting to see if the same mixer is causing both spurs, 1820 
and 3510. Fortunately the 3510 spur goes away at night because one of 
the contributor stations is daytime only.

Interesting video by N8PR, but he is fighting a different problem from 
what I have,

I do not have a strap around the rotator.  That's worth a try. Thanks 
Lloyd and Hank.

Jerry, K4SAV