On Wed, 5 Oct 2011, Jerrold Jones wrote:

I have a project where I am going to modify an internal receiver circuit that
uses Toko style coils for the various stages. I want to be able to determine
the resonant frequency of these coils. I'm told I can do this with a dip
meter, but I'm not sure how. The Toko coils are shielded. If I just bring
the dip meter coil near, I don't get a response. Am I going to have to
remove the Toko coils from the circuit, remove the metal shield, and then
move the dip meter close and adjust for the dip or is there a simpler way?

So if it's a commercial receiver, the information may already be out
there, but nobody would know until you reveal the receiver, and the stage
you want to modify.

Michael VE2BVW