LA3ZA Radio and Electronics

Here's my map of confirmed US states as it has slowly been filling over the last 10 years. 41 states have been confirmed on CW on Logboo...

Earthrise from Apollo 8 ( NASA ) My blog has just been updated by migrating posts from my old web site containing a collection of audi...

Some records just have too much stereo separation. This makes them kind of artificial to listen to with earplugs or headphones as the soun...

The Elecraft K2 has an autodetect feature for the keyer input. When enabled, and when the DASH and the DOT lines are keyed at exactly the ...

Last fall there was a competition at DangerousPrototypes with many interesting entries based on the 7400 logic gate family. The ancestr...

IKEA Oleby automatic wardrobe light with passive infrared sensor upper right and four LEDs in the center. Passive Infrared (PIR) detect...

Output stage of the 1 Volt DL2AVH transmitter (from http://www.lichtnetzwerk.de/1volttxvr_dkumentation.pdf ) I am intrigued by minimali...

World empires and colonies in 1914, also at the time of the 1. Int. Radiotelegraphic Convention. Source  Wikipedia Commons , user  Andr...