QRPi – Raspberry Pi WSPR Module

WSPR has continually been one of my favorite modes. While I enjoy the magic of a random CQ contact, I also enjoy getting a snapshot all around the world...

WSPR has continually been one of my favorite modes. While I enjoy the magic of a random CQ contact, I also enjoy getting a snapshot all around the world of who is receiving my signal sent from various antennas/locations/power levels/etc. I was using it so much though, I needed to find a way to free up my HF rig for other experiments 😉 Devices like the U3S from QRP Labs, & the WSPRlite from SOTABeams are neat gadgets, but if you already have a Raspberry Pi in the shack, you might want to consider the QRPi from TAPR.

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What’s the QRPi you say? Well it’s a 20m transmit shield for the Raspberry Pi that does more than just WSPR – but CW, SSTV and many more – just checkout the documentation here. (Designed by HA7DCD). I think it has been quite popular as of late though, because as of today, they are sold out.

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All that’s required is to open up the terminal command window – and type in some simple commands to get up and running with this board. Installation of a simple SO-239 pigtail to the board was easy enough. The only consideration I would take in running the RPi is to ensure your not using a dirty power supply – which they are consistently supplied with! The typical wall warts that come with RPi’s usually aren’t clean enough, so I’ll usually power it from my Alinco PS USB port.

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Propagation has been absolutely tough this week – but still impressive for 100mW. I’m hooked up to my 4 band off-center fed at the home QTH for this test, with about a 75′ run of coax. Average distance for the past day has been about 2800km.

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RPi’s are increasingly becoming more popular in the shack as they gain a bit of processing power. I also use the RPi as my APRS I-Gate. Lots of uses for an RPi in the shack – what do you use yours for?

73

K5ACL

 

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Raspberry PiWSPR
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