[TowerTalk] cutting phasing lines
jimlux
jimlux at earthlink.net
Sun Apr 11 16:56:05 PDT 2010
vk3pa at vk3pa.com wrote:
> Gdy all, my Q is I need to cut phasing lines for 7.050 Mhz of 84
> degrees es 71 degrees! ok So far, now 360 degrees = 1 wave length, so
> 0.5 wavelrngth (=180 degrees) would be 468/freq /vf es / by 180 would
> be 1 degree so x by required degrees eg 84 es 71 ok ! so now how do
> I convert 84 es 71 degrees to a frequency so I can cut the lines WITH
> my antenna bridge rx vector analyst autek VA1?? OR AM i WAY OFF IN MY
> THINKING!! 73 es tnx Al vk3pa
> _
By the way, the 468/MHz is for cutting a dipole. about 5% shorter than
free space half wavelength which gets you close to a non-reactive
feedpoint Z.
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