[Lowfer] its been good to know ye

[John Andrews]

Zack,

Sounds familiar. I have a station on 580 about 2 miles away...my sympathies!

You might want to consider a higher voltage for the FET, maybe 15-20 
volts, and see what happens.

Perhaps you could temporarily eliminate the protection diodes and see if 
that makes a difference. If it doesn't help, substitute a capacitor for 
the varactor and see if the intermod is coming from that.

My best results here have been in keeping the loop balanced with respect 
to ground, and tuning it with relay-switched capacitors. Some info is 
available at:
http://www.w1tag.com/rxloop.htm
Note that the preamp winds up being in the shack, and is 50 ohms in and 
out. With this setup, there has been no observable difference between 
having the preamp at the loop or inside the house.

John Andrews, W1TAG