Archive for tag: subharmonic mixer

30m Subharmonic I/Q-SDR Receiver

January 4, 2010 | Amateur Radio | By: Mark VandeWettering

Over on NT7S’s Ripples in the Ether blog, he presents a link to a project by Joachim, DL1GSJ, a very nifty little SDR designed to operate near the 30m QRSS watering hole frequncy. It uses pair of subharmonic mixers, whose operation I admit I don’t completely understand, but I’m bookmarking the circuit for later consumption. […]

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