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Click here for Dave's commercial site, www.mtsneffelspress.com, where you can order Dave's fantasy books and other books by local authors. One very popular book I publish for the local railroad museum is about historic narrow gauge railroads in the San Juans.
Monthly Archives: December 2013
Here is your video introduction to Lesson 5.4, Transmitter Structure, in the ARRL General Class License Manual for Ham Radio. This is part 1 of 2. This part covers everything in Section 5.4 except outboard linear amplifiers. Part 2 can … Continue reading
This is part 2 of your video introduction to Lesson 5.4, Transmitter Structure, as found in the ARRL General Class License Manual for Ham Radio. This part covers the part of Section 5.4 that pertains to outboard linear amplifiers. When … Continue reading
My new Brinno TLC 200 Pro camera found some use yesterday looking at clouds. My original intent was to simply get pictures of the clouds as they passed overhead. Instead, I observed a curious effect—there’s a nice blue hole in … Continue reading