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[TowerTalk] CATV length

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Subject: [TowerTalk] CATV length
From: (John Brosnahan)
Date: Fri, 4 Jul 1997 10:38:48 -0600 (MDT)
>               Thanks and gud DX, 73 de WT9Q--Bob

Minimize the error at the highest frequency by cutting to that length, since
a couple of feet error on the lowest frequency is a smaller part of a

But please note  --CATV line can vary from .78 to maybe .86 VF or more.  So
your biggest error will be from the not well known VF. For best results
determine the VF for the actual cables you are using.  The velocity factor
varies as to the percent of bubbles of air and can vary from reel to reel
from the same manufacturer.  I have even seen it vary from one end to the
other of a roll--but not nearly as much as from reel to reel.  Use any of the
popular methods to determine the cable length--grid dip meter, or antenna

73  John  W0UN

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