[CQ-Contest] 40m to 20m interference

[Jim Brown]

Hi Bill,

This sort of issue is one of many addressed in this talk I've done at 
Visalia, to NCCC, and a few other local clubs.

http://k9yc.com/Multi-Station.pdf

73, Jim K9YC

On 1/22/2020 3:00 PM, William Hendrick via CQ-Contest wrote:
> I have a lot of interference on 20m when TXing on 40m even with BPF on each K3 running 100w. A 23' shorted stub at the 40m rig doesn't seem to help. Both antennas are Butternut verticals about 150' apart. Am I asking too much for the filters with the same antenna polarization and spacing?