In message , JC
writes
Thanks for help, I think I wrongly explained my problem, here is the
question:
1/ I design an antenna, for instance a 3 el 20m beam.
2/ I enter into EZNEC wires dimensions, spacing, height, source.....
3/ EZNEC calculates gain, F/B, SWR....and results are acceptable.
4/ Now let's suppose my objectives are max F/B as I have a QRM source
opposed to my favourite transmitting direction and SWR 1.5 on a given
frequency range as my transceiver is very SWR sensitive and I can't use an
antenna tuner.
I accept changing wire lengths and spacing but not boom length.
Is there a way to have EZNEC, or another software, doing automatic
iterations until it reaches the best F/B-SWR compromise ?


MMANA does what you want and it's free.

http://mmhamsoft.amateur-radio.ca/ and I see there's a new release out.

Read this too. http://g7rau.demon.co.uk/sm5bsz/

Brian GM4DIJ
--
Brian Howie