More Flag advice needed !

Medium & long wave antenna discussion
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simbeav
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Joined: 14 Oct 2014 15:00

More Flag advice needed !

Post by simbeav » 29 Oct 2018 10:24

Sorry to be a pain.

I see from the Ken Baird site (David 's corner) dimensions of 34ft x 16ft and a few other sites have similar.

But Stuart has 10m x 2 m and unless I got it wrong, John has only 8ft between his verticals and both are getting great results.

What is the most important ? Length / Height / both ? Is the ratio important ?

Puzzled of Cardiff.

satnipper
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Joined: 03 Oct 2014 12:58
Location: Western Europe

Re: More Flag advice needed !

Post by satnipper » 29 Oct 2018 10:31

8m x 4m is probably the optimal. The vertical section is the most important (along with the balun...) as a Flag is a pair of phased verticals and the horizontal sections act as earths.

My flag is "wrong" but it is still working brilliantly as my location is very good now for NA MF.

Stuart

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John Faulkner, Skegness
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Location: Skegness, Lincolnshire. JO03dd
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Re: More Flag advice needed !

Post by John Faulkner, Skegness » 29 Oct 2018 10:33

Large flags can exhibit poor directivity problems. I have witnessed this with my own and with Julian's. Stick to the stated dimensions 25 feet across, 10 feet up.

tvdxrools
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Joined: 01 Oct 2015 07:11

Re: More Flag advice needed !

Post by tvdxrools » 29 Oct 2018 10:40

there is no set rule ,, go with what u can fit in but dont go to big with them , i would try what john or stuart says but go all in with the balun , David

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