On Fri, Aug 23, 2013 at 10:39 AM, Sunil Shah <[email protected]> wrote: > > And when I had a go at it, it was one of the projects you could build with a > "few components on a piece of cardboard"-kits. > > It consisted of a coil w ferrite core, trimcap, headphones and a > _Germanium_Diode_ (the magical ingredient ; )
I remember those kits! They had spring loaded standoffs for connecting components and wires assembled on the box they came. Weren't they provided by AT&T or Bell Labs?

