Musings on Radio, Computers, Technology, and Family
I recently encountered the Chinese Tecsun 2p3 AM radio kit, and just had to get one for myself. It’s a basic transistor radio, in a very nice semi-retro case. I picked it up online for around $25 or so. Inside the box is a nice clear container with all of the parts. For scale, I’ve Read More …
In a previous post, I described finding and fixing a bad RFI source that was making it impossible to receive anything on 2 meters except the very closest repeaters. I eliminated a switching regulator for an LED fixture, and replaced it with a noise-free linear regulator. The improvement was amazing. However, eliminating my worst noise Read More …
Most ham radio operators know that switching power supplies found in many modern electronic devices can produce lots of radio interference. I knew this, but I tended to think of the problem as mostly one for HF. Since HF was working reasonably well for me, I assumed I didn’t have any bad noise sources, and Read More …
Here is a peek at the hardware which you are using right now to view this website. It’s hosted on a Raspberry Pi, a tiny, inexpensive Linux machine. This one is running “headless”, meaning it has no keyboard, mouse, or display. Instead, I connect to it via ssh, http, or other network protocols. The black Read More …