[Elecraft] Compounds to retain windings in place on toroid cores

[Jack Smith]

A common question concerning inductors wound on toroid cores is whether
a retaining compound should be used to fix the windings in place.

In the case of the cores used in the K2, retaining compounds are not
necessary and should not be used. However, this question still comes up
and there are cases where retaining compounds are necessary, or at least
desirable.

I've added a page to my web site showing how to make Q-Dope and
presenting measurements for similar coils retained with real GC Q-Dope,
my homebrew Q-Dope, beeswax and hot glue.

http://www.cliftonlaboratories.com/coil_coating_compounds.htm

Jack K8ZOA