Thermal solutions for the Raspberry Pi
Recent metal case offerings from Raspberry Pi enclosure manufacturers help mitigate heat issues when you dare try process-heavy applications including amateur radio spotting servers.
Ham Radio . Magnum Experimentum
Antennas, experiments, engineering and other articles of interest to radio folks.
Recent metal case offerings from Raspberry Pi enclosure manufacturers help mitigate heat issues when you dare try process-heavy applications including amateur radio spotting servers.
Careful selection of quality probes joined with the Raspberry Pi offerings yields a wireless E and H field sensor for accurate antenna analysis.
The Raspberry Pi Zero brings nearly off the shelf gear to the task of generating an RF test signal from a completely wireless, small, self powered device about the size of a D cell.
With a bit of work, one can successfully feed an array of LF-HF receivers from one broadband antenna.
The Airspy YouLoop is a no tune, broadband, small footprint, affordable LF to HF receive antenna that works indoors. Its modular construction facilitates experiments to understand where the Möbius inspired electrical design provides benefit.
Testing confirms an end-fed dipole can energize the radiator nearly as well as a center-fed without need of additional counterpoise or other extraneous conductors.