Test And Measurement

Jason Milldrum on October 22nd, 2011

Progress on CC-Series development proceeds at a reasonably-good clip right now. One of my last big hardware bugs to stamp out is some nasty microphonics that seem to be generated by the combination product detector/BFO. Today, I believe that I made some significant progress towards solving it and wanted to share what I learned. I've done a [...]

Continue reading about Single-Ended Mixers and Reverse Isolation

Jason Milldrum on October 27th, 2010

I'm starting to build up the gear for the kitbiz to get off the ground, and the first large investment just arrived at the shack. Thanks to some blog posts from Eldon WA0UWH, I found AmScope.com, who sells all manner of microscopes for low prices. I ended up finding a scope that was very similar [...]

Continue reading about A New Toy for the Shack

Jason Milldrum on July 31st, 2008

Today I finished construction on the circuitry for the RMS-to-DC converter described on the October 1992 QST article by W0IYH on measuring receiver performance. This is an article that I found on the EMRFD CD when I was searching for information on measuring the noise figure of amplifiers and receivers. I didn't find the article [...]

Continue reading about W0IYH RMS-to-DC Converter