To: | topband@contesting.com |
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Subject: | Re: Topband: 4 new radials... |
From: | Jim Brown <jim@audiosystemsgroup.com> |
Reply-to: | jim@audiosystemsgroup.com |
Date: | Thu, 09 Feb 2012 20:22:11 -0800 |
List-post: | <topband@contesting.com">mailto:topband@contesting.com> |
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 _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK |
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