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Attached are the figures and calculations I used to set my measurements for 27.385.
I am using an MFJ-1890 - the actual tubing dimensions are here, but I used .625 inches - http://www.mfjenterprises.com/Downloads/index.php?productid=MFJ-1890&filename=MFJ-1890 manual REV 1A.pdf&company=mfj
I fudged/nudged the numbers slightly in a couple cases to better meet my tape measure increments.

I originally used 27.385 for my calculations but they did not meet my needs so I change to 27.245. I didn't own an analyzer at the time so my numbers were all based on SWR measurements at 20 feet. I'll try and connect the analyzer here soon and show those results as time allows.

[QUOTE="tba02, post: 539350, member: 39985"] Attached are the figures and calculations I used to set my measurements for 27.385. I am using an MFJ-1890 - the actual tubing dimensions are here, but I used .625 inches - [URL='http://www.mfjenterprises.com/Downloads/index.php?productid=MFJ-1890&filename=MFJ-1890%20manual%20REV%201A.pdf&company=mfj']http://www.mfjenterprises.com/Downloads/index.php?productid=MFJ-1890&filename=MFJ-1890 manual REV 1A.pdf&company=mfj[/URL] I fudged/nudged the numbers slightly in a couple cases to better meet my tape measure increments. I originally used 27.385 for my calculations but they did not meet my needs so I change to 27.245. I didn't own an analyzer at the time so my numbers were all based on SWR measurements at 20 feet. I'll try and connect the analyzer here soon and show those results as time allows. [/QUOTE]

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