[Elecraft] "essential" tools

Vic K2VCO vic at rakefet.com
Thu Jun 1 11:55:58 EDT 2006


Ron D'Eau Claire wrote:
>
> It doesn't hurt to measure the inductance if you want to, but don't panic if
> the values don't match the manual and don't try to adjust the coil to make
> them match. 

Ron's right, and I'm repeating myself too, but I want to add that the 
effect of a toroid core on inductance *varies with frequency*.  So if 
you have an inductance meter that uses a 1 MHz signal source to measure 
the inductance of a coil that is to be used at 10 MHz, the error may be 
quite large.

I have used an MFJ antenna analyzer to measure toroid inductance at the 
relevant frequency, but as Ron points out it is not necessary or 
appropriate to do this when winding toroids for an Elecraft kit.
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco


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