[Qcwa] Joining QCWA

[Harvey&Bessie]

My original AM BC radio receiver (1922) had a coil wound on an oatmeal
box. The coil was tapped every tenth turn on one end (ten taps) and
every turn on the other end (ten taps) these were brought out to two
ten-position switches on the top of the box, the knobs of which were the
"tuning" knobs. A cat-whisker crystal detector was mounted in the middle
of the top. It had an antenna and ground binding post in the upper left
hand corner of the top and two binding posts for headphones in the lower
right hand corner of the top. The whole receiver was mounted in a black
wooden box about 8" X 8" X 10".
The transceiver that used only one tube (UV19) was a 5-meter job, first
used by steel workers in the construction of the Golden Gate Bridge.
Modified for ham use on the 5 meter band. The detector was
super-regenerative and the transmitter used a carbon-granual telephone
mike to modulate the plate current, thereby generating, not only AM but
FM as well. The super regen receiver couldn't tell the difference!
We used "loop modulation" on 160 meters in the early 30's. A
carbon-granual telephone mike was connected across a one or two turn
loop which was loosely coupled to the output tank coil of a low powered
(self excited oscillator) which served as a transmitter! The signal, of
course was heavily FM modulated as well as AM.
Ah, yes, the "good ole days!"
Harvey/W4TG