[TowerTalk] Re: Different Feedline Velocity Factors

Dan Levin djl at andlev.com
Sun Aug 31 14:24:35 EDT 2003


> From: "Cliff Bond" <WA4MWM at triad.rr.com>
> To: "Pete Smith" <n4zr at contesting.com>, <towertalk at contesting.com>
> Subject: [TowerTalk] Mixing different feedlines

> Is there any negative interaction when mixing different
> velocity factor feedlines?  

Nope.

> My plans are to use LMR-600 from the shack to the tower
> (200' +/-) and RG-213 from the switching network to the
> antennas (135' +/-).

Should work just fine. The only critical piece is the
electrical length of the feedlines from the "switching
network" to the antennas.  Those lines must all be the
same length - electrically.  You can use different
velocity factor lines for them to, but then you would have
to measure and cut different physical lengths to make them
each the same length electrically.

GL,

                  ***dan, K6IF

See you all in the California QSO Party, 
October 4-5!


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