[Elecraft] Boiled toroids <yum>

[W2AGN]

I have always made it a habit to put VFO toroids in the toaster oven at 250
deg for an hour or so before installing. Guess it works, my K1s, K2, Sierra,
etc.,don't drift that I can notice.
 
John W2AGN
-------Original Message-------
 
From: Kevin Rock
Date: Friday, March 21, 2003 02:27:15 PM
To: Elecraft
Subject: [Elecraft] Boiled toroids 
 
In chapter 4, Oscillators and Frequency Synthesizers, of Experimental
Methods in RF Design by Wes Hayward, Rick Campbell, and Bob Larkin there is
and interesting 
section on temperature stabilizing inductors. On page 4.7 it mentions a
subtle problem of stress built up in the wires as they are wound. W7EL's
method of stress 
relieving the wire is to boil them! I find this book to be most informative
and will gradually build some of the circuits when time is available to do
so. 
 
Just thought I would pass this along to all you toroid winders out there :)
Kevin. KD5ONS
 
 
.