have 15- micro Henry. This one contains 14- turns of the enamel
wire in diameter 0.8- mm (20- AWG). Winding is turn to turn. L2
should have 15- micro Henry. The inductor contains 40- turns of
the enamel wire in diameter 0.3- mm (29- AWG). Winding spread
in 1-1/2 layer. L1 has 160- micro Henry of inductance. It was
used ready- made surplus inductor. As I have noticed the schematic
works with practically any inductors. At first I would like to
make the inductors on one form but later I gave up the idea because
I cannot trim the inductance.
used a variable capacitor (unknown made) with build- in vernier.
Loudspeaker is used from an old phone base SENAO. Switches S1
and S2 is a three- positions toggle switch. VT1, VT2, VT3 are
small power transistors. Gain is not less the 100. F is not less
the 100- MHz.
may hear the Three Bands Regenerative Receiver at YOUTUBE.
File name: ua6aak regen