On Mon, 9 Feb 2009 15:30:50 -0600, "Howard Kowall"
wrote:

sorry I should mention the RG-59 is used for impedance matching not feed
line
thanks again
Howard

"Howard Kowall" wrote in message
...
Hello all
What determines the Velocity Factor of a coax cable.
Is it the center conductor awg,dielectric,shield or all combined
I am building a
Lindenblad Antenna for 2 Meters

its asked to use

RG-59 polyethylene foam coax with stranded center conductor

I think the VF is .66

I cant find any stranded center cond where I am,so I want to try it with
Solid,but it seems all the solid is VF .88

You might want to consider using RG-6/u instead of RG-59. These daze,
the quality of RG-59 coax is rather marginal. I've seen 80% coverage
shielding and cable unsuitable for outdoor use. Meanwhile, the CATV
people have switched to RG-6/u for everything. Much of it is quad
shielded and UV resistant. Velocity factor is usually 0.66 for solid
dielectric and anywhere between 0.7 and 0.9 for various foam
dielectric mixes. When you find a suitable piece of cable, grab the
manufacturer and full part number. Then, lookup the VF on the mfg
data sheet.


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