Negatron N01 PWL
This negatron is similar to negatron on the Jogis homepage.
Example of circuit with this tube, using negative resistance for regeneration is there.
That's why here are two circuits with negatron, but in variant of classical regenerative receiver.
On the circuit diagram a) adjective electrode is used for regeneration, in the anode are headphones.
Capacitor of value 1 nF closed signals of high frequency to the earth. By the regulation of filament voltage or connection beetween inductances is possible change of proportion of regeneration.
Circuit of variant b) is better- gain factor is higher. During testing of this circuit the anode was disconnected. Gain wasn't much more worst than earlier.
This observation was fundamental for preparing special duodiode for regenerative receiver.
The parameters of negatron N01 PWL