Topband: 4 new radials...
Jim Brown
jim at audiosystemsgroup.com
Thu Feb 9 20:22:11 PST 2012
On 2/9/2012 6:12 PM, Jim F. wrote:
> Using measured capacitance between the two conductors
> of my cable ( 24pf / ft.) it was easy to calculate the lengths of
> cables going to the other 3 condos.
At what frequency did you make that capacitance measurement, and how did
you make it? When the frequency is high enough that the cable you are
measuring is longer than about 1/20 wavelength (taking Vp into account),
the behavior of the cable as a transmission line will cause measurement
error.
73, Jim K9YC
More information about the Topband
mailing list