[RFI] SO2R and 2nd harmonic

[Jim Brown]

This is very good advice, but it is likely to be PART of a solution, not 
THE solution.

W2VJN's approach is not the best one.  This is the best one.

http://k9yc.com/LocatingStubs.pdf  and http://k9yc.com/StubPlacement.pdf

Here's a practical implementation in W6GJB's contesting trailer.

k9yc.com/7QP.pdf

We can run two 500W stations with K3 and KPA500 on adjacent CW bands 
(80/40, 40/20) with antenna feedpoints within about 1 meter.  Photos 
show a tribander on a separate portable support, but we're now running 
it on the pneumatic mast with the 40M dipole.

73, Jim K9YC

On 9/13/2017 8:17 AM, Ron Watson wrote:
> About a year ago I had a similar problem but with a K3 and IC-7600. I determined that the main culprit was the RG-213 jumpers from the rigs to the Hamation filters (also tried Dunstar 600's). When I replaced those two jumpers with RG214 it got rid of most of the leakage, finally changed those two jumpers to quarter inch Heliax and was barely detectable with either filter brand.