[TowerTalk] Figuring degrees of a coax line

[n4vi at comcast.net]

Tom,

For mismatched lines, phase change is not linear per unit length.  The current forcing function at every 1/2 wavelength still holds.  You can find more information in this article by Roy Lewallen.

http://www.eznec.com/Amateur/Articles/Simpfeed.pdf

73

Chris Adams, n4vi/0

 -------------- Original message ----------------------
From: "Tom Osborne" <w7why at verizon.net>
> OK all you math guru's.
> 
> I have been trying to figure an easy way to find the length of a couple  of 
> phasing lines.
> 
> What I want is an 84 degree and 71 degree phasing line for 7.050.
> 
> I found one way, but I thought was kind of a long way around.
> 
> If 360 degrees is ~132 feet, is 1 degree .068 feet?  Then can you multiply 
> that by 84 and get the answer (that way it comes out to 30.9 feet).
> 
> Is there a simple formula?
> 
> I asked a guy at work and he was telling me about signs and cosigns, and I 
> graduated from high school in 1954 :-)  73
> Tom W7WHY
> 
> 
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