Re: [TenTec] OT

[Steve Hunt <steve@karinya.net>]

Rob,

Why use 100ft of coax on a 1.5ft diameter form, when 3ft or so of coax 
on a ferrite core would give you much higher CM impedance than that; and 
better still, it would be Resistive rather than Reactive?
73,
Steve G3TXQ

On 18/11/2010 18:21, Rob Atkinson wrote:
> I once wound 100' of 213 on a small plastic garbage can 1.5 feet diameter
> and used it as a c.m. choke on 160.  I calculated the Xl was over 2000 ohms
> (I don't remember the exact figure) and the diameter and width of the coil
> were about equal (which gives the highest value for a given length of
> conductor).   I am unconvinced that this is not a good solution.