Great progress with the Pico Balloon project! The latest release (version 1.3) is 4 layers and weights around 3 grams when printed on a 1.6mm PCB (can further be reduced in the future). It also have some interesting new features: allows self-calibration, can measure its own power supply and has an onboard temperature sensor. Here […]
Category Archives: Hacks
K1FM WSPR Transmitter (aka: el cheapo Antenna Testing)
I recently built a couple of identical WSPR transmitters to be used in direct comparisons between magnetic loops and other antennas, or even between various kinds of magnetic loops. They are now available on Github. The transmitters are based upon the Si5351 clock generator and their RF section was inspired by the excellent Zachtec’s products. […]
K1FM Pico Balloon – Part One
The Pico Balloon concept is simple: you build a transmitter small enough to be carried around by one or two common party balloons. As the transmitter floats around the globe it transmits its current position and altitude so you can follow its path in realtime. If you do it right, the balloon will circumnavigate the […]
HDSDR OSX version 2.76 released
Once again, with Mario’s permission, I bundled the latest revision of HDSDR to be run on OSX. I also created a new rtl_sdr launcher that should be more stable, easier to use and that incorporates the bleeding edge version of librtlsdr.I tested this on Yosemite, El Capitan and Sierra. My CPU is a quad i7. Here […]
HDSDR on OSX the EASY way – SDRplay edition
Hello, Today I updated my HDSDR OSX bundle to include support for SDRplay. Nothing much has changed… If you want to enjoy SDRplay + HDSDR on OSX, all you need to do is the following: Install the SDRplay drivers (available here) Download my bundle Copy ‘HDSR OSX’ and ‘rtl_tcp SDRplay’ on you hard drive Run the […]