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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: January 2015
Here is your video introduction to Section 7.4, “Interference and Noise,” in the ARRL Extra Class License Manual for Ham Radio. After you’ve viewed the video, studied the section, and are comfortable with the associated test questions, you can return … Continue reading
Here’s your video introduction to Section 7.3, “Modulation Techniques,” in the ARRL Extra Class License Manual for Ham Radio. When you have finished viewing the video, read the section, and are comfortable with the related test questions, you can return … Continue reading
Here’s your video introduction to Section 7.2, “Test Equipment,” in the ARRL Extra Class License Manual for Ham Radio. After finishing the video, studying Section 7.2, and becoming comfortable with the relevant questions in the question pool, you may return … Continue reading
My Christmas present in 2014 was an Oak Hills Research OHR 100A 20-meter QRP radio kit. I’ve played around with QRP in the past and found it a fun way to operate. QRP is the Q-signal for “low power,” by … Continue reading
Here’s your video introduction to Section 7.1, AC Waveforms and Measurements, in the ARRL Extra Class License Manual for Ham Radio. This video introduces the section. After watching the video you will want to study the section and study the … Continue reading