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Old July 11th 06, 10:58 PM posted to rec.radio.amateur.antenna
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First recorded activity by RadioBanter: Jul 2006
Posts: 644
Default Antenna optimization

FWIW, FilZip unzipped it fine: one file, MMANGAL_Setup.exe. It's
possible that the zip file became corrupted when you downloaded it,
too.

Cheers,
Tom

Ron wrote:
I downloaded MMANA but I can't seem to unzip it. What program will
unzip it ? I have WinZip 7.0

Thanks
Ron WA0KDS


Brian Howie wrote:
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


 
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