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1. [TowerTalk] Stability of velocity factor in coax cables (score: 1): Author: Rob Martin <rgmrob@yahoo.com>; Date: Sun, 1 Jan 2012 08:38:05 -0800 (PST); I am making delay lines using coaxial cables. How does the velocity factor of a cable change with temperature and over time? Does anybody have information about this? Thanks. Rob AE7EG ______________; /archives//html/Towertalk/2012-01/msg00001.html (6,874 bytes)
2. Re: [TowerTalk] Stability of velocity factor in coax cables (score: 1): Author: Jim Lux <jimlux@earthlink.net>; Date: Sun, 01 Jan 2012 09:08:32 -0800; For run of the mill coax the effect is small (tens of ppm per degree C). You've got several factors working together: 1) The CTE of the coax longitudinally-> it gets longer as the temperature goes up; /archives//html/Towertalk/2012-01/msg00003.html (7,767 bytes)

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