- on Education & Information
- Published in issue 6/2013 on page 13
The Cat’s Whisker
Usually when I start writing an article, for inspiration I look at what’s around on my desk. For this edition of Weird World of Components a Crystal Diode type FRIHO D.R.P. caught my eye. It is mentioned in an old Radio Bauer Katalog from 1926  — we are talking old stuff here — and it is one of the main components of old crystal radio systems.