[CQ-Contest] 40m to 20m interference

[Jeff Blaine]

Bill,

There is no such thing as an easy answer on this.  But with a bit of 
study, you can get a handle on the issue and the magnitude of the fix 
needed.  I would recommend you track down the W2VJN book "Managing 
Interstation Interference."  It's got everything you need to get this 
under control.

https://toptendevices.com/products/managing-interstation-interference-2nd-edition-by-george-custogeorge-w2vjn/

73/jeff/ac0c
alpha-charlie-zero-charlie
www.ac0c.com


On 1/22/20 5:00 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?
> Bill, N0AC
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