Raspi As WSPR Transmitter
Posted: April 13, 2013 Filed under: Ham Radio, QRP, Raspi, WSPR 5 CommentsRecently the Raspberry Pi (Raspi) has gained much interest in the Ham Radio community. One interesting things is: the I/O pins provide access to a clock signal (GPCLK0) and it is possible to modulate this clock signal via software. This has motivated Guido Ten Dolle (PE1NZZ) to implement a WSPR transmitter and to publish the sources under GPL. Within the last days I have made some minor modifications to the WsprryPi sources, built a 30m QRP filter using the ugly method and connected everything to my doublet antenna.
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| Raspi as WSPR Transmitter |
Immediately my 10mW have been received in 743km distance by G6HUI (WSPR Spots):
| Timestamp | Call | MHz | SNR | Drift | Grid | Pwr | Reporter | RGrid | km | az |
|---|---|---|---|---|---|---|---|---|---|---|
| 2013-04-13 15:30 | DG6FL | 10.140199 | -16 | -1 | JO40cb | 0.01 | G6HUI | IO81wl | 743 | 286 |
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| 7869km with 10mW |
| Timestamp | Call | MHz | SNR | Drift | Grid | Pwr | Reporter | RGrid | km | az |
|---|---|---|---|---|---|---|---|---|---|---|
| 2013-04-22 05:02 | DG6FL | 10.140238 | -21 | 1 | JO40cb | 0.01 | W4AC | EL86 | 7869 | 289 |
Information on how to do this yourself can be found in the WsprryPi repository.
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