It was not uncommon to see circuits with only a few transistors ... How on earth could a single transistor form the heart of a radio receiver with enough sensitivity and selectivity to be useful ...
Popular in ham radio circles ... Manhattan Style circuits and copper clad boxes definitely add a nice touch to certain items, like the Wheatstone Bridge Regenerative Receiver you see above.
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback