[Elecraft] 160 M Harmonic Problem with K2/100 Driving TenTec Titan

[Lee Buller]

For what its worth,
 
You might try to choke all cables connected to the K2.  Sounds like RF is getting is somewhere.  You might have such a high RF field in your shack because of your antenna system that it might be impossible to cure on the short term  Choking all the cables might be a start.  I use RG174 for all keying lines and such.  You might want to choke your headphones as well.  I have had trouble in this area too until I got a more resonate antenna installed on my city lot.  It is a true inverted-L...around 130 foot long.  You can use an UNUN to get to the right feed point impedance or use a tuning cap/inductor arraingement.  With your Titan (goooooood amp) the components would have to be pretty healthy.  As for the second harmonic, I was in a 160 meter contest several years ago where a guy came on and said we were 20 of S9 on 80 meters.  We were into a 1/4 wave verticle on 160 with a very good match.  I think that sometimes RXs are pretty good that --46 to -55 db down is not enough.  Heck, what
 do I know though?  These are just random thoughts. I've had a neighbor compain that when she was curling her hair with a curling iron (coil of hot wire) that she could hear me in her hearing aid!  
 
Lee - K0WA