[TenTec] 1254 Q-Multiplier... Yes. Add a signal strenght meter too and replace those 1N4148s in the 2nd Mixer!

Ralph Matheny mathenyr at marietta.edu
Wed Dec 28 18:06:51 EST 2005


There is a one-transistor Q mult circuit back in the 1958!!!!! ARRL
handbook I think.  I'm not sure how well it worked, and as I remember
it was intended to be a "notch" but wold also make a peak one way or
another.  A drawing of the ole Heath QF-1 should give a good idea of
a tube-type circuit, which could be "transposed" to a FET with ease.
If nobody has a a QF-1 book, I have a unit and could perhaps make a
sketch of the circuit from it.

I agree---the little Rx works dern good.


Ralph Matheny
K8RYU
207 Gibbons Place
Marietta Ohio  45750







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