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 excessive dipole lengths 
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Post excessive dipole lengths
Why would one have 150ft arms on a dipole food top band. I heard this being discussed. But it seems a waste of two times20 ft of wire.
John


Thu Feb 26, 2015 10:53 pm
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 excessive dipole lengths 
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Post Re: excessive dipole lengths
Should have said dipole for top band not food . :scratch:


Fri Feb 27, 2015 7:09 pm
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 excessive dipole lengths 
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Post Re: excessive dipole lengths
Can't think of a good reason!

Steve G3TXQ


Fri Feb 27, 2015 7:45 pm
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 excessive dipole lengths 
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Thanks Steve. I cannot either. Nice to know I'm not missing something fundamental.
Thanks for being available with the information. John


Sat Feb 28, 2015 12:08 am
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 excessive dipole lengths 
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Post Re: excessive dipole lengths
Was it a coax-fed dipole, or a balanced-wire fed doublet?
Would it give slightly more gain broadside on top band?


Sat Feb 28, 2015 1:09 am
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 excessive dipole lengths 
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Post Re: excessive dipole lengths
Increasing the length from a half-wave to 300ft provides 0.17dB more broadside gain, and increases the SWR50 from 1.3:1 to 47:1.

Steve G3TXQ


Sat Feb 28, 2015 10:20 am
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 excessive dipole lengths 
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Post Re: excessive dipole lengths
I should have clarified that I meant in the case of an balanced feeder fed doublet. Not enough gain on top band to justify it, but perhaps for a multi-band doublet worth it? I've always tried to fill the available span with copper wire.


Sat Feb 28, 2015 8:08 pm
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