As a next project for my
1926 regenerative receiver I have to make myself a CW transmitter for
it. A hartley oscillator and a RE134 german tube form 1929 era seems to
be a good choice.
All of it has to be build breadboard style with the use of big copper coils made out of automotive brake piping. Old mica capacitors, and as much components as used in 1929, or refabricated. Left you see a sample of the mica capacitors, one even with a grid resistor inside a glas tube.
pa2mrx © juli 2012