Unexpected Ethernet QRM

I made a quick-and-dirty directional Yagi antenna out of PVC pipe and measuring tape for some future Radio Direction Finding (“fox hunt”) fun. (Instructions here) Since I spent an evening sticking it all together, I had to test it out. So I connected it to a 2-meter (144MHz) radio, tuned it to an unused frequency, …

Winlink 2000 – Email on the Wind

Since I have my ham rig already set up for soundcard modes, I decided to give WinLink 2000 a try. WL2K is an email-over-the-air transport system that can take advantage of many modulation modes and frequencies, and allows a remote station with no Internet access to send and receive email messages complete with attachments. It’s …

Tiny, Cheap, Expensive

Picked up an RTL-SDR software-defined radio dongle. Because reasons. After an evening of driver hell, I decided today that maybe I should read the quick-start instructions. Gosh, they’re more helpful than I imagined. Finally got the SDRSharp software to recognize the dongle and start tuning and decoding radio. Unfortunately, my poor old laptop is just …

Parallax

When I’m playing with my radio in a public park, I try to make sure that I am physically safe by being aware of my surroundings while my headphones are on, and that I’m always presenting the right image that I’m just a guy doing a thing that’s totally natural and nonthreatening. It usually gets …