[TowerTalk] Cable on a reel using a formula?

[Blake Bowers]

pi R squared?  No, pi R round, Cornbread is square.....


I just measure one of the loops, fudge just a bit, and 
times it times the number of loops on the spool.   Gets
me close everytime.
----- Original Message ----- 
From: "Reicher, James" <JReicher at hrblock.com>
To: <towertalk at contesting.com>
Sent: Thursday, October 06, 2005 2:56 PM
Subject: Re: [TowerTalk] Cable on a reel using a formula?


> Actually, pi are juicy and cornbread are dry. :)
> 
> 
> The formula is (2(pi*r) * t where r = radius and t = # of turns.
> To get the correct length, you'll have to measure the radius of the core
> of the wire for each layer. 
> 
> You might also try looking up the specs and get the weight of the cable
> per foot and the weight of the spool.  Weigh the loaded spool; subtract
> the weight of the spool, leaving the weight of the cable.  Divide the
> total weight of the cable by the weight per foot and, voila!  You have
> the number of feet on the spool.
> 
> 73 de N8AU, Jim in Raymore, MO