hi scouseboy
this is the first time i,ve been in this section but i hope i may be able to help if you still need it , now when you say a list of raf radar stations do you mean strictly that or a wider look such as the chain home sites .
as to secrecy again do you mean when officially did radar become common knowledge to all or just to the british public , only the germans knew of our involvement in developing radar in 1939 as we did of them .
regards
trevor