Charles, With dual band close spaced beams, everything interacts. You can try adjusting the wire lengths by the percentage you were off your target frequency, or just operate them as they fell. They will vary with height, and there is no compelling need to have them exactly resonant in cases like this, as long as your are getting about the beam action you want.
Your SWR actual at 21 feet seem to be OK for operations. Or just use a tuner to touch up the match. Stuart K5KVH _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
