Any one know what this circuit is?

[Wired]

Anyone know what it does?

[Drew]

There are no active amplification devices in that schematic (transistors or tubes). Lots of capacitors (some of them variable). Also some coils and what looks like 2 transformers. The formula means nothing to me.

Looks like a bandpass circuit of some kind to me. Being the type of person who believes that the fewer devices in a signal path the better, I intend to keep anything that looks vaguely like that out of my system. :laugh:

[Metralla]

I think it's some sort of resonator. As Drew noted, variable capacitors - two ganged together. Perhaps a tuner front-end? The formula implies resonance I guess. Something doesn't look right about the result though.

Honestly, I have no idea.

Regards,
Geoff

[Sckott]

I would say it looks like a tuner front end too. Definitely not complete...