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6au6 uses?

Page 16, I wonder what Dynaco's motivation was to discourage a typical alignment? I can see how it would be a selling point to make it possible without a small fortune in test gear, but they actually advise against test gear, saying you will end up with "unsatisfactory, and undesirable results". I've always wondered about this. :dunno:

http://www.the-planet.org/dynaco/Tuner/FM3.pdf
 
I had one of these once, decent sound when it worked tho' suffering from SM shunt capacitor disease for which 'K' can IFTs are notorious.

If you still had it, see my page http://www.wa2ise.com/radios/repair.htm about halfway down. Here I was talking about AM radio IFs, but the FMs are similar. IIRC the caps are around 24pF. You could place these caps below the chassis so if the value is wrong, it's easy to change.
 
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