@sonnith: thanks! I actually didn't have a VR2020/05 on file yet. Yours was manufactured in week 10 of 1981, 55th design revision already (it took them a lot of work to get the first generation working just right).
@Welsh Anorak: much appreciated, please in
https://www.vintage-radio.net/forum/...d.php?t=146344 or by PM
@AC/HL: thanks! I wasn't sure anymore, got a lot going on here.