Software Defined Radio is an exciting technology and it was great to explore the possibilities when applied to the BeagleBone with cheap DVB-T USB sticks. It was an unexpected amount of fun to hear the BBB tune and play a FM station! Nice to have some hams on hand, too.
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Using the RTL-SDR is great for very high or ultra high frequency work, but doesn’t go low enough for HF amateur radio use. I wrote code for the PRU that uses an external DAC and synthesizes SSB modulated PSK31 encoded data on the 80m and lower bands. Details and source code: http://trmm.net/Soft_SSB
Thanks for sharing Trammell! You never fail to impress!