[Elecraft] [K2] Inductivity of Toroids

[Don Wilhelm]

While we are discussing toroids, be careful not to put an extra turn on 
the toroids.  A straight wire through the center of the core is 1 turn, 
a full wrap around the core is two turns.  Toroids are different than 
solenoidal inductors.

73,
Don W3FPR

On 1/1/2013 9:14 AM, Daniel Heise wrote:
> Dear K2-Experts,
>
> I´m just assembling my K2, and it´s true: It really is addictive :)
> After winding my first toroid inductors, I measured their inductivity 
> with an atlas LCR40 component analyser before I soldered them into the 
> RF board.
> Though I closely adhered to the manual, the measured inductivities are 
> almost twice as high than the values stated in the manual (on the 
> parts list in appendix A).
>
> It was good to read on the elecraft homepage, that the inductivities 
> are not too critical for the entire function of the transceiver. But 
> I´m still wondering if anyone else measured the inductivities of the 
> toroid inductors and made similar experiences...