Tag Archives: radio

Radio Spectrum Analyzer at Maker Faire

May 21, 2013 by jboone

For Maker Faire, I cobbled together a last-minute radio spectrum analyzer out of a HackRF software-defined radio and a giant vacuum fluorescent display. Continue reading →

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Progress On My Software-Defined Radio

May 10, 2012 by jboone

My homebrew software-defined radio tunes and captures 8MHz of FM broadcast spectrum, and I demodulate it using GNU Radio. Continue reading →

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Software Radio Baseband Digitizer PCB

November 7, 2011 by jboone

I’m plugging away at building an inexpensive, high-bandwidth software-defined radio receiver. I built a bunch of PLL+VCO boards, filter boards, and quadrature mixer boards. But I still don’t have a good ADC to sample the signals I’m receiving. No longer! … Continue reading →

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ADF4350 VCO+PLL Breakout Board

October 25, 2011 by jboone

I’m a software radio freak. When I first heard about the Analog Devices ADF4350, a PLL+VCO that can tune between 137.5 and 4400 MHz, I was obsessed with getting one and building it into my projects. Naturally, the first step … Continue reading →

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Signals from Space! (part 3)

October 1, 2011 by jboone

In the last two parts, I used my homebrew software-defined radio to receive weather image signals from the NOAA-19 satellite and spent some time trying to calculate the satellite’s speed using frequency shift measurements. This time around, I’m going to … Continue reading →

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Signals from Space! (part 2, and a Chronulator contest)

September 8, 2011 by jboone

Quick recap: In part 1, I captured weather satellite signals with my software-defined radio prototype, using the audio input on my laptop. So, what can be done with these captured signals? The first thing I did after recording the NOAA-19 … Continue reading →

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Signals from Space! (part 1)

September 6, 2011 by jboone

I attempt to receive weather satellite signals with my software radio prototype — with surprisingly good results! Continue reading →

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