[R-390] R-390A Cost Reduction and Improvements (was dead horse Hi)

[Joe Foley]

Ok, so what's the recipe, ala R-390 style, for an LC
filter?

Can the R-390 filters be used in an R-390A?

Or do we have to start from scratch, winding a coil
shouldn't be too tough, selecting a cap to go with it
should be easier.  Or do we have to have a tuneable
cap for adjustment?  Would a slug tuned coil be
better?

Any ideas/possibilities for producing a short run of
such a thing?

Joe




--- Todd Bigelow - PS <tbigelow@pop.state.vt.us>
wrote:
> Joe Foley wrote:
> 
> >Has anyone ever tried to brew up a coil/capacitor
> >replacement for the mechanical filters?
> >
> >
> >Joe
> >
> 
> I seem to recall our pal Nolan posting something
> about this. Maybe it 
> was Dr. Jerry, or a combination of both? It all came
> from the 
> understanding that, eventually, all of the filters
> would fail and we'd 
> need to figure out some way to
> repair/replace/retrofit them.
> 
> Might be something in the archives?
> 
> ~ Boomer
> 


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