alisoncc,
I think you are right, but I don't have access to my copy of RV Jones' "Most Secret War" - highly recommended.
The historian
A. J. P. Taylor described
Most Secret War as "the most fascinating book on the Second World War that I have ever read"
[10] and, more generally, it has acquired almost classic status.
I remember at the end of the book, Jones discusses the teams that went out to Germany to recovery radar equipment and I think he mentioned that some of the equipment was passed on to universities.
Concerning stability, one of the pieces of evidence that Jones used to deduce that the Luftwaffe were using beams for bombing guidance (Knickebein), was an expert's observation that the Lorentz blind-landing receivers in a captured He 111 were far more accurate and stable than they needed to be for blind-landing.