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Old 18th Mar 2017, 8:59 pm   #24
Oldcodger
Nonode
 
Join Date: Oct 2014
Location: West Midlands, UK.
Posts: 2,181
Default Re: Permeability Tuning

From what I remember from college days back in the 60's Permeability Tuning was done in ( mostly ) car radios to make the components smaller. No need for a massive variable ganged air finned capacitor, when a smaller solid non variable would do the job, with the tuning done by coil variations and in a smaller space. Least ways that's what I remember, possibly modulated by several shocks from higher voltage kit.
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