[TowerTalk] Matched "Bury Flex" cables

[R.Sigismonti]

I recently purchased a 1000 ft roll of Davis BuryFlex cable, planning 
on using it to replace old RG-213 cables on my 15M and 20M 3-stacks.  I 
pruned one length of cable for an odd multiple of quarter waves at 
21150 kHz and then proceeded to cut two others to the exact length of 
the first cable.  Much to my surprise, when I checked the electrical 
length of the other two cables, I found them resonant well below the 
15M band.  I had to remove 4-5 feet of cable from each run (approx 
142ft) to get them to resonate.  Has anyone run into a similar 
experience, where the apparent velocity factor of the cable varied in a 
single run?  I haven't checked the 20M lines, which I made in a similar 
fashion, but hope to be lucky with them.

Sig