This is W3IU's amateur
station, circa 1936. The receiver is a Breting 12 and the
microphone appears to be an early version of the Astatic 104 crystal.
The Breting 12 was a
12-tube general coverage receiver, with a range of 550 kHz to 30 mHz.
It cost about $93.00 when new.
The transmitter is a very nicely done
homebrew job, as can be seen in the pictures above and below. It
is not a high power unit, using only a single 203 (?) as the final
amplifier. The modulator (the second chassis from the bottom)
appears to use a pair of 800's in push-pull. Click on either
transmitter picture for a larger view.
This is W3IU with his
equipment, in another room of the house. The microphone stand is
different, and just behind it is an oscilloscope being used as a
modulation monitor.