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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: March 2017
This loop might be the solution for the many hams who’ve written me asking about antennas for covenant-restricted communities and high-rises. I unbox the Chamelion CHA P-LOOP 2.0 HF loop antenna. You can see a list of Ask Dave videos … Continue reading
Can you power your station from the sun? Absolutely! This video explains solar power from the panels and batteries to charge controllers and sizing. You can see a list of Ask Dave videos by clicking here. You can ask a … Continue reading
One of the basic building blocks of radio is the amplifier. Let’s look at the theory behind a simple transistor amp, breadboard it, and test it! You can see a list of Ask Dave videos by clicking here. You can … Continue reading
Sorry about all the posts showing up suddenly (including this one)! I was way, way behind on posting my YouTube videos to my website, so I hired Kael, a teenager, to help me bring it up to date. He’s a … Continue reading
The BITX-40 Raduino-based VFO has a horrible habit of galloping up or down the band at the most inconvenient times. This simple mod fixes the problem. The schematic showing the original circuit and the modified circuit is shown below the … Continue reading
Thank you to the many people who drop something in my Tip Jar. YouTube is discontinuing Fan Funding! Note that the PayPal method continues to be available and will for the foreseeable future. To replace YouTube Fan Funding, I’ve added … Continue reading
Previous videos explored aspects of building the BITX-40 SSB QRP rig. This video explores the operations aspect. Fun little rig! Ashhar Farhan photo courtesy Nagasai Nath. You can see a list of Ask Dave videos by clicking here. You can … Continue reading
Folks have asked for a way to watch the Extra videos offline. So, now they’re available at full resolution on a 64 GB “thumb drive” for $49.99, postpaid in the USA. You can see a list of Ask Dave videos … Continue reading
Dave gets an amp! I’ve mentioned it incidentally, but here’s a whole video on the HF amp and its power supply. Even though it’s many years old, it’s performing reliably and consistently. You can see a list of Ask Dave … Continue reading