[TowerTalk] rg-59 manufacturer

[Jim Brown]

I'd say that you have lousy coax from a cheapo manufacturer with poor 
quality control, and toss it in the trash.

73, Jim K9YC

On Sun,2/15/2015 3:11 PM, charlie carroll wrote:
> I have some rg-59 that I want to use for phasing a couple antennas in a
> low-power environment.  The 2 cables are marked as:
>
> S.I.W TYPE RG-59/U-SP-95  MADE IN U.S.A
>
> and
>
> S.I.W TYPE RG-59/U-P-95  MADE IN U.S.A
>
> I am looking for the manufacturer's data sheet to understand the
> differences and characteristics of the cables.  The cable marked "SP"
> actually has a stranded center conductor while the other is a solid
> center conductor.
>
> The big difference, however, is the impedance of the cable.  The "SP"
> measures in the 63-65 ohm range with a VNWA, depending on which of
> several I measure.  The solid-center version measures about 71 ohms on a
> single sample.  The velocity factor is in the .64 to .66 range on all
> cables.
>
> Is there anyone that can point me to some data?
>
> 73 charlie, k1xx
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