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ROBB pointed out some major issues, also the antenna being so close to the metal roof will have some effect on the VSWR, you may also want to try an ugly choke at the feed point.

BUILD AN AIR WOUND 1:1 CHOKE BALUN FOR HF - THE UGLY BALUN!

I think for 26 mhz probably around 5 turns of coax around a 4 1/2" diameter tube will work. I am sure some others will correct me if this dimension is incorrect.

Having the ground radials at a 45 degree bend is a MUST to get the impedance down to 50 ohms.

Enjoy and have fun.

[QUOTE="wavrider, post: 443597, member: 9893"] ROBB pointed out some major issues, also the antenna being so close to the metal roof will have some effect on the VSWR, you may also want to try an ugly choke at the feed point. [url=http://www.hamuniverse.com/balun.html]BUILD AN AIR WOUND 1:1 CHOKE BALUN FOR HF - THE UGLY BALUN![/url] I think for 26 mhz probably around 5 turns of coax around a 4 1/2" diameter tube will work. I am sure some others will correct me if this dimension is incorrect. Having the ground radials at a 45 degree bend is a MUST to get the impedance down to 50 ohms. Enjoy and have fun. [/QUOTE]

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