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

[Bwana Bob]

That's exactly what I was doing today: looking at the QF-1 schematic to 
see if it could be done with FET's. That Q-multiplier from the 1958 
Handbook sounds like the same one that I built from the 1964 Handbook. I 
don't have the schematic anymore, but I still have the parts in the junk 
box.  Anybody have a 1958 or 1964 Handbook?


				73,

				Bob WB2VUF

Ralph Matheny wrote:

> 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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