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Old February 13th 08, 02:35 AM posted to sci.physics.electromag,rec.radio.amateur.antenna,sci.electronics.design
Roy Lewallen Roy Lewallen is offline
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First recorded activity by RadioBanter: Jun 2006
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Default Group Velocity and Velocity Factor

Correction:

Roy Lewallen wrote:

Mathematically, vp = c/sqrt(1 - (f/fc)^2)
vg = c * sqrt(1 - (f/fc)^2)


That should be:

vp = c/sqrt(1 - (fc/f)^2)
vg = c * sqrt(1 - (fc/f)^2)

I apologize for the error.

Roy Lewallen, W7EL