Thread: Dish reflector
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Old April 23rd 09, 09:11 PM posted to rec.radio.amateur.antenna
Jim Kelley Jim Kelley is offline
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Default Loading coils: was Dish reflector

Cecil Moore wrote:
Jim Kelley wrote:
steveeh131047 wrote:
Cecil: that's a VERY significant result. If I feed the dimensions of
W8JI's coil into Equation 32 in the Corum Bros paper it predicts an
axial Velocity Factor of 0.033. That would equate to a time delay of
24.7nS across the 10" long coil !!!!


You're right. The numbers are amazingly close - almost as if his
'experimental apparatus' had calculated the result rather than measure
it.


Why do you say "approximately 25 nS" and 24.7 nS are
amazingly close?


I was being facetious.

"Approximately 25 nS" might include
an unknown measurement inaccuracy.


There's that, and as any good dry labber knows, it's a dead giveaway to
report a precision greater than one can actually measure. :-)

73, ac6xg