[Elecraft] VW PTO

[kc4kgu@ENTERZONE.NET]

I believe in the original contextof the thread, it is a "Power Take Off."

73 de John - KC4KGU
K2 #2490

On Sun, 17 Mar 2002, Ron D' Eau Claire wrote:

> >
> > What is a PTO??
> >
> > Dan
> >
> 
> Permeability-tuned oscillator.
> 
> The frequency of the oscillator is varied by varying the permeability of the
> core in the inductor in the frequency-determining circuit.
> 
> You may be familiar with oscillators that use a 'tuning capacitor'  - either
> a mechanically-variable capacitor such as the old tube-type receivers used
> or a varicap like many solid state equipments use. We might have called that
> a CTO for "capacitance-tuned oscillator".
> 
> Usually, the permeability of the inductor is changed by moving a
> powdered-iron core into and out of the inductor using some sort of screw
> mechanism that allows for very precise positioning of the core.
> 
> Ron AC7AC
> K2 # 1289