Welcome to Prutchi.com!
Welcome to our site, a blog dedicated to the cutting-edge do-it-yourself projects that we develop at home. Shanni and David are the authors of the book “Exploring Quantum Physics through Hands-On...
View ArticleA Lesson in State Paranoia: The Stasi Museum in Leipzig, Germany
2 Weeks ago I visited one of our patients in Germany. The hospital was close to Leipzig, and I had a few hours to stroll through town. I went to the Museum in der Runde Ecke, which documents the...
View ArticleEmotiGlass Project Entry for The Hackaday Prize 2018
Jason Meyers and I submitted our project “EmotiGlass” as our entry in The Hackaday Prize 2018. All augmented reality devices so far provide an interactive experience of the real-world environment that...
View ArticleGained 80W at 1296MHz by adding an adapter
Last weekend I found that I was loosing quite a bit of power when combining the outputs of two 300W VHFDesign 1296MHz power amplifiers through a hybrid-ring coupler (rat race). The power was going...
View ArticleFirst light on S-band with low-gain (1.2m) offset dish
I have the aiming of the 1.2m offset dish calibrated, so it’s ready for receiving on DSN bands. I started by placing a WA5VJB wideband log-periodic array at the focal point followed by a Minicircuits...
View ArticleMy First True-DSN X-Band DX: Bepi-Colombo at 15.2 Million km from Earth
Today I was able to receive my first true-DSN X-band DX from Bepi-Colombo at a distance of 15.2 million km (around 9.5 million miles) away from Earth! The squeezed-tube feed was made by Jason Meyers...
View ArticleProbe Location for Squeezed-Tube X-Band DSN Feed
Feeds with squeezed-tube depolarizers are popular among amateur DSN enthusiasts because of their straightforward, no-tune construction. Luis Cupido CT1DMK published a design that is often followed,...
View ArticleOSIRIS-REx Spacecraft Received Before Start of Sample Collection Maneuvers
I caught the last transmission of OSIRIS-REx with its high-gain antenna pointing towards Earth before it started to slew to its burn attitude. A few minutes later Goldstone reacquired it but at -154...
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