Tag Archives: Arduino

An Improved Classie WSPR Controller

When I first put together the Classie WSPR transceiver my primary concern was the transmit/receive circuitry. I only concerned myself with the controller in so far as confirming it was putting out the correct waveform with the proper timing. But once I had the transceiver on the air for a while it was time to …

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A Classie WSPR Transceiver

Update: An updated version of the controller used with the Classie WSPR transceiver is presented here. Because of my location, amateur radio operations are limited to low power and disadvantaged antennas. Therefore, the WSPR (Weak Signal Propagation Reporter) protocol immediately caught my eye when I first ran across it. My primary interest is building, so …

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A PKS31 Beacon In An FPGA

Back in January 2012 I described a technique for producing PSK31 signals that requires no multiplications or explicit wave shaping. It was based upon viewing the PSK signal not as a single modulated waveform but as as the sum of two unmodulated waveforms whose individual frequencies depend upon whether you are transmitting a one or …

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Tabula Candida

Doodles of a distracted historian

rtl-sdr.com

A blog about RTL-SDR (RTL2832) and cheap software defined radio

DuWayne's Place

Computers, Electronics, and Amateur Radio from KC3XM

QRP HomeBuilder - QRPHB -

Computers, Electronics, and Amateur Radio from KC3XM

Open Emitter

Computers, Electronics, and Amateur Radio from KC3XM

Ripples in the Ether

Emanations from Amateur Radio Station NT7S

m0xpd's 'Shack Nasties'

Computers, Electronics, and Amateur Radio from KC3XM