[Elecraft] Matching resonant antennas

[Edward R Cole]

Interesting discussion:

But most of us probably tune our antennas for best SWR at the desired 
frequency.

I have a dual-band 80-40m inverted-V with apex at 40-foot and 80m 
wire tail at 20-foot.  The separate 40m wire is spaced 6-inches from 
the 80m wire with wooden dowels.  I found by trial-n-error that one 
must tune the lowest frequency wires, first.  I did that using an 
antenna analyzer.  Then the 40m wires.  Turns out (probably due to 
coupling) that the 40m antenna is narrow bw (50-KHz at best) whereas 
I get good SWR from 3650-4000 KHz.

The purist will say that's not resonant but the transmitter is 
happy.  I can  run bypass on 3800-4000 KHz with my KXPA100/KXAT100 
but must  tune using the atu on 40m.
For working around Alaska (out to 800-miles) this "cloud burner" 
works well with 100w.  I only use SSB on these bands.  3920 is the 
defacto calling/emcomm channel in AK.

When we have an earthquake, 3920 lights up (as well as 14,292) for 
reporting from our remote areas.  I live two miles from salt-water so 
tsunami watch is common after a "big one".

73, Ed - KL7UW
   http://www.kl7uw.com
Dubus-NA Business mail:
   dubususa at gmail.com