ARLA/CLUSTER: Contactos a 2000km usando um Raspberry Pi

[João Costa > CT1FBF]

2000 km DX using the Raspberry Pi

*Eddie G3ZJO* used the 10 mW of RF that can be generated from the Raspberry
Pi computer board to get over 2000 km on the 7 MHz band.

The Raspberry Pi <http://www.raspberrypi.org/> board can operate as a WSPR
transmitter covering LF, HF and VHF up to 250 MHz.

Eddie G3ZJO connected the board's GPIO port via a low pass filter to a 40m
Doublet for the 7 and 14 MHz bands or to a small Marconi inverted L just 6m
up 6m out for the 472 kHz band which he estimates generates an ERP of 0.5
microwatts.

Among the stations who received his WSPR signal were:

LA9JO JP99gb 2124km on 7MHz
LY2BOS KO24or 1736km on 14MHz
IK1WVQ JN44cb 1133km on 7MHz
G4KPX JO02dj 80km on 472kHz
G3XIZ IO92ub 46km on 472kHz

The PE1NNZ code and binary to turn the Raspberry Pi into a WSPR
LF/MF/HF/VHF transmitter is available at
https://github.com/threeme3/WsprryPi

Raspberry Pi as WSPR transmitter up to 250 MHz
http://www.southgatearc.org/news/march2013/
raspberry_pi_as_wspr_transmitter_up_to_250_mhz.htm<http://www.southgatearc.org/news/march2013/raspberry_pi_as_wspr_transmitter_up_to_250_mhz.htm>

Turning the Raspberry Pi into an FM Transmitter
http://www.southgatearc.org/news/march2013/
turning_the_raspberry_pi_into_an_fm_transmitter.htm<http://www.southgatearc.org/news/march2013/turning_the_raspberry_pi_into_an_fm_transmitter.htm>
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