![gr-rpitx: GNU Radio compatible general purpose SDR emitter using the Raspberry Pi(4) internal phase locked loop | Semantic Scholar gr-rpitx: GNU Radio compatible general purpose SDR emitter using the Raspberry Pi(4) internal phase locked loop | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/9a4b00f50b59ba1015949fcc738b7681c5f15f39/2-Figure2-1.png)
gr-rpitx: GNU Radio compatible general purpose SDR emitter using the Raspberry Pi(4) internal phase locked loop | Semantic Scholar
f5oeo on Twitter: "Half done : First FT8 QSO with rpitx as transmitter -manual mode- (received with a remote SDR and Wsjt-x for now). Next step : rtl_sdr reception. Thanks again to
![f5oeo on Twitter: "Let's go HF with #rpitx and this band-pass filter by @MakisSV1AFN and easily controled by GPIO. Have to follow it with a little PA. https://t.co/OLoMZ6DQVk" / Twitter f5oeo on Twitter: "Let's go HF with #rpitx and this band-pass filter by @MakisSV1AFN and easily controled by GPIO. Have to follow it with a little PA. https://t.co/OLoMZ6DQVk" / Twitter](https://pbs.twimg.com/media/DqiDJO9XgAE08FY.jpg)