What $15 USB SDR can transmit? All the ones I have only receive, and to transmit... | Hacker News

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		margalabargala on April 28, 2023 \| parent \| context \| favorite \| on: FlipperZero: 1 Month Battery Life with Firmware Up... What $15 USB SDR can transmit? All the ones I have only receive, and to transmit I'm seeing more like $100. At $15 I would buy one immediately.

cdchn on April 28, 2023 | | [–]

I think people have managed to use the GPIO pins as a bit bang transmitter.

sebcat on April 28, 2023 | | [–]

See https://github.com/F5OEO/rpitx

riveducha on April 28, 2023 | [–]

Sorry, my wording was unclear. The USB RTL-SDR was for receiving, and I did the capture and analysis on my desktop. The Raspberry Pi was for transmitting using the GPIO pins.

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