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It goes back farther than that: For ham operators, there was a single-tube radio published in 1932 that pretty well laid out the principles. http://www.w7ekb.c
by jpmattia 12y ago
It goes back farther than that: For ham operators, there was a single-tube radio published in 1932 that pretty well laid out the principles.
http://www.w7ekb.com/glowbugs/tx/hartleyonetube.htm http://www.w7ekb.com/glowbugs/tx/hartleyonetube.htm has a nice summary.
- linker3000 12y agoAgreed. I restricted my time warp to a period where transistors/FETs were ubiquitous and finally cheap for the hobbyist, but as you say the principles go way back.
- raverbashing 12y agoAh yeah, it's the same principle Also, the receiver and transmitter are awfully similar (in practice, if you build a receiver it will interfere with "everything" around it)