Hello Merlin
You beat me. I just checked and that is the book by Streetly I have, it has much info in it, also on a/c. Also much info on German electronics and a/c, some of which maybe outdated by now, at lest the speed of He 219A-5/R2, my standard checking point, but Streetly correctly pointed out that very few of the post A-2 variants were produced...
Juha