[Antennas] How to calculate cable length

[Ron Youvan]

> I have heard somewhere and I can not remember from where or 
> from who that if you count the number of turns and multiply 
> that times the diameter of the actual spool you can get an 
> approximate amount of feet remaining on spool?

> Is that correct or does somebody out there who has had a 
> similar situation and has encountered an unknown amount of cable, 
> etc. have a more definitive way of determining the amount of 
> cable or wire one may have that is on a spool?

> Thanks in advance for all responses

   You are correct, measuring the circumference of the pile and
multiplying it by the number of wraps will give you the best
estimation, short of removing it from the coil/reel and taking
a tape measure to it.  If several layers measure the circumference
of the average layer.
-- 
    Ron  KA4INM - Why can't men train their wives to put the
                  toilet seat back up when they are finished?