That looks like a great site! I'll peruse it at my leisure with a cup of tea later. I used to have one of those Midland airband converters back when I were a lad in the late 60's. It was a very simple cct and seemed to consist of some kind of super-regenerative detector which radiated the resultant 'IF' to any nearby MW radio. It worked very well.
I think I eventually took it to bits....
