MediaTek MT7921AU Wi-Fi adapter turned into an SDR
Two projects independently repurposed the MediaTek MT7921AU Wi-Fi chip as a software-defined radio. BirriaSDR streams raw I/Q samples at 40 Msps in 14-bit resolution with tuning from 2156 to 2610 MHz, while Mtk79ICAP reaches 80 MHz bandwidth and the 5 GHz bands via SoapySDR.
- BirriaSDR: 40 Msps stream, 14-bit, 2156–2610 MHz tuning
- Mtk79ICAP: up to 80 MHz bandwidth and 5 GHz bands
- BirriaSDR uses libusb and makes no permanent firmware changes
- Mtk79ICAP requires modified firmware and driver
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