The Minimalist Superhet Radio project.

[Geordie McBoyne]

Decided the reflex IF amplifier is not a nice idea.  Another idea was to employ the 6B8G simply as an IF amplifier and use a high slope output valve such as the 6AG6G or EL33. The minimalist superhet will be redesigned and will become a four valve receiver + rectifier so the valve line up will be 7S7 frequency changer, 6K7G IF amplifier, 6Q7G/GT detector, AVC and audio amplifier, Output 6V6G/GT.  The HT rectifier might be a 6X5GT or metal rectifier.  The chosen circuit will be the series 1 Pilot Little Maestro, you can't get anything more minimalist than that receiver, it has a very low component count. Original 6A8G pentagrid frequency changer replaced by the much better 7S7 triode-heptode.  Like many small Pilot and Philco radios the second IF transformer will be fitted under the chassis.   Rewiring of the chassis has started.

Geordie McBoyne.