Build a voice-powered RF transmitter

Build a voice-powered RF transmitter


Fred points out this schematic for a rather interesting radiotelephone transmitter instantaneously powered by the operator’s voice –

One of the neatest minimalist amateur radio transmitter circuits around – this one is voice powered – it provides DSB, (double side band)modulation and power from an ordinary 8-ohm speaker – if are in doubt that the circuit works, the maker has the contacts and the voice recordings to prove it!

An explanation of how it works + schematic and audio sample can be found on the El Silbo page.

Discuss this article with the rest of the community on our Discord server!
Maker Faire Bay Area 2023 - Mare Island, CA

Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 15th iteration!

Buy Tickets today! SAVE 15% and lock-in your preferred date(s).