wrote:
i do would that help me with my mess of ferrites?
...

1) Is your junk drawer supply good?

2) Got a freq counter?

If you answered yes to the above, build a simple 1 transistor
oscillator. Wrap a few turns on the toroid, and shunt it with a know
capacitance. Read the freq of the oscillator, using a chart available
on the web, note the capacitive reactance of the cap value in ohms.

Since capacitive reactance = inductive reactance in ohms at resonance,
it is now a simple matter to translate in the inductive reactance of the
torrid coil into uh/mh--using the osc freq and a chart from the web ...

Warmest regards,
JS


Since

John Smith I wrote:

...

I should have mentioned, in case it escaped your attention, a SW
receiver will serve as freq counter (watch out for harmonics), if you
have patience to hunt the signal ... you can "rough guess" the freq by
the expectations of the expected inductance (type 43, 61, etc. and no.
of turns) and the capacitance used.

JS