[Milsurplus] MAK Transmitter osc

[David Stinson]

Ken's suggestion is a good one, but don't "go overboard."
This kind of feedback directly increases crystal current.
"A little dab will do ya..."

On 2/17/2020 5:05 PM, Kenneth G. Gordon wrote:
> Ray:
> Viewing the schematic, the plate output tuning network provides the phase-shift necessary
> to sustain oscillations, IFF the crystal is very active. The capacitor at the bottom of the plate
> tuning network is connected to the cathode, then cathode being the "common" between the
> grid and the plate.
>
> If that was my rig, I would simply connect a SMALL capacitance, a "gimmick" capacitor,
> directly from the plate to the grid
>
> You won't need much. 1 to 2 pfd and not more than, say, 5 pfd, should be enough to get any
> crystal working.
>