[ARC5] BC-455 adventure

[Bill Fuqua]

  I had good results doing this as well.
I added a gimic capacitor from plate to grid of the IF amplifier, took that 
stage off the
AVC line and added a pot in the cathode to make it function as a Q-multiplier.
That worked rather well. You could reduce the pot until it oscillated and 
back off  and
achieve very good CW selectivity.

73
Bill wa4lav

At 01:03 PM 6/16/2012 -0500, David Stinson wrote:

>----- Original Message -----
>
> >
> > Speaking of which, is there a reasonable way to run them with the
> > original
> > dynamotor? I seem to recall something about reduced voltage/RPM not
> > being a
> > good thing? I've probably asked this before, just don't remember the
> > answer. Old age 'n all that....
>
>I've had sets in which the fils had been rewired for 12 volts.
>I put a 28 volt dyno on them, run it at 12 volts and it worked
>just fine.  Ran for hours.
>
>
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