Permeability Tuning

[Mark Hennessy]

Hi Dr Mark, can you confirm the slug was ferrite or iron dust?

Hi Lawrence,

To be honest, I didn't look. That part of the radio was working, and I didn't want to risk causing more problems - it was a customer repair, and I'd spent enough time tracing a really obscure fault with the AM AGC circuits. Not helped by the fact that the only schematics I have are poor quality scans - impossible to read the component values or designations...

Cheers,

Mark