It's easy to become bored spending time in airports. After all, you can do only so much work on a notebook computer with no reference material around. So, relax and have some fun at the airport–build ...

Here is a neat project I found at Matjaž Vidmar’s Website. The purpose of this project was to design an accurate radio altimeter with a dual-channel (quadrature) homodyne receiver. This new design ...

There is a certain charm to older electronics gear. Heavy metal chassis and obviously hand-wired harness can be a work of art even if they would be economically impractical for most modern gear.

Marked: "Signal Corps, U.S. Army / Airplane Radio Receiving Set / Type SCR 59 / Serial No. [blank] / Order No. W4076 / Made by Western Electric Co., Inc." Plate on ...

Marked: "Tuner Air / R.A.F. Type 10 / No. A/621 / General Electric Co., U.S.A. / N.P. 18119", and "Control / NP 17987-E / 17987-F". World War I era military unit, a two section receiver consisting of ...