Paul,
Do you remember the Ladybird book of how to Build Your Own Transistor Radio?.
I don't recall that one specifically, but I had several radio/technical books from the series. I remember having Ladybird books on the Discovery of Radio, Telephones, etc.
Somewhere in the very early 1970s there were also little "Project" books published here by -- of all people -- The Milk Marketing Board. They were aimed at kids and covered a whole range of topics, not just electronics. I still have some of those somewhere: Exploring a Railway System, Build A Record Collection, Signaling (Morse code, semaphore, flag signals etc.)
and one from that series "How to Build Your Own Transistor Radio."
In fact at least two or three of my very first radio projects came out of that book! (They used mostly the OC-series transistors as I recall, which were very common at that time.)
I have a question for the ECN family here, is there still a company that makes Air-spaced Variable Capacitors and Trimmer capacitors as well?.
Jackson Bros. still make them here, but be warned they are not cheap anymore!
http://www.mainlinegroup.co.uk/jacksonbrothers/
