You're not asking too much. One of my homebrew 20m beams has a 40m
OptiBeam interlaced on the same boom and at 100 watts there is no 20m
interference at all except right on the harmonic. Make sure that you
are using quality coax, good chokes at the antennas and perhaps try
better bandpass filters or converting your verticals to monoband
verticals.
GL,
John KK9A
William Hendrick N0AC 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
_______________________________________________
CQ-Contest mailing list
CQ-Contest@contesting.com
http://lists.contesting.com/mailman/listinfo/cq-contest
|