I need a ckt for a Q Multiplier, possibly by Heathkit or others. A ckt from a Ham or commercial radio receiver might be useful!
Schematics for the QF-1 are pretty easy to find. http://www.jvgavila.com/qf-1.gif
. You could also look up HD-11 (added internal power supply) http://www.utm.edu/staff/leeb/hd-11.PDF
or GD-125 (re-styled) http://www.radiomuseum.org/r/heath_q_mu ... _gd12.html
There are tons of schematics for various receivers. Might want to be a little more specifics about what you are looking for and why. That might lead to some specific directions. Otherwise just look here... http://www.one-electron.com/FC_Ham.html
There are a bunch of receivers in the pile.