Topband: Cutting Delay Lines

Ed Stallman ed.n5dg at gmail.com
Tue Jul 12 23:04:45 EDT 2016


I'm cutting a 40 degree and a 20 Degree Delay line using RG6 at 1.83MHz 
for a  receive 8 circle array ! I know the velocity factor of the RG6 
and have all the math worked out .

After doing the calculations and trimming the RG6 back , I'm looking 
for  X=0 at 4.118 MHZ ( or as close to X=0 as possible )

Now to my question: I'm finding the X=0 to be a broad range , looks to 
be + - 50 KHz on my MFJ 259b .. I know , I need a better analyzer ... 
Can I double of quadruple the frequency to narrow the span where X=0?

Thanks Ed N5DG



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