An FPGA and a few components can make a radio (2020)hackaday.com 8 pointsCieplak3 years ago1 commentSaveHideCopy link On HNComments−rasz3yFun little known fact - all the cheap Chinese walkie talkies (Baofeng etc) are SDR (software defined) since 2009.https://hackaday.com/2022/11/15/getting-to-the-heart-of-a-ba...All based on RDA1846 introduced in 2008. Inside this chip you will find LNA, mixer, PLL, ADC/DAC, and a DSP. Complete dual band radio on a chip. Cheap too.https://datasheetspdf.com/pdf-file/1473066/RDA/RDA1846/1
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Fun little known fact - all the cheap Chinese walkie talkies (Baofeng etc) are SDR (software defined) since 2009.
https://hackaday.com/2022/11/15/getting-to-the-heart-of-a-ba...
All based on RDA1846 introduced in 2008. Inside this chip you will find LNA, mixer, PLL, ADC/DAC, and a DSP. Complete dual band radio on a chip. Cheap too.
https://datasheetspdf.com/pdf-file/1473066/RDA/RDA1846/1