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Passive components are not capable of power gain. This could include resistors, capacitors, inductors, diodes etc.

16 votes
10 answers
6k views

Schematics for a simple radio transmitter that can be built only with passive components?

Fantasized in some of the survivalist, post-catastrophic novels, movies or docudramas is the radio built only with handcrafted or scraped components. Beyond the popular appeal of this stories, I thin …
Eduard Florinescu's user avatar
1 vote

Schematics for a simple radio transmitter that can be built only with passive components?

Because the spark gap transmitter is mentioned a lot in the answer but without a schematic diagram or detailed description of the working principles, I will include its schematic diagram. The abo …
Eduard Florinescu's user avatar