Solid foam angular corrugated hardline cable is around .88 VF, while 
spiral corrugated cable (superflex, etc)  is more like .81 VF, IIRC.
-Steve K8LX
On 10/23/24 4:15 PM, Art Greenberg wrote:
 
On 10/23/24 15:55, Jim Lux wrote:
 You can get a length measurement from one end with a inexpensive 
(<$100)VNA like the NanoVNA. And you'll be able to tell if there's 
damage
somewhere along the length.
  
 I have a couple of VNAs which I would use to measure loss. To measure 
length, I would need to know the velocity factor though, correct?
 
 
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