At 10:36 AM 7/13/99 -0700, Leslie Bai wrote:
>
>
>Dear members,
>
>Anyone there can share the experience to measure
>cables' impedance thus to identify whether a BNC
>is a 50 ohm or 75 ohm cable.
>
>Thanks,
>Leslie

Quick and dirty method with a high amount 
of confidence that you have RG-58 or RG-59 
in your hand but not an absolute method?  

Measure the OD of the cable. 
RG-59 is *more likely* to be fatter than RG-58. 

No guarantee though ... 


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