Help to identify UGT Philips (Algemeen)

door Maarten Bakker , Haarlem / Delft, 03.02.2021, 22:54 (1389 dagen geleden) @ Maurice
Bewerkt door Maarten Bakker, 03.02.2021, 22:59

In the final days of the old coding system, it seems they have used whatever code subgroups that were still unused. A3 154 99 was probably the last output transformer within the originally allocated space, and that number would have been issued in the early 1960's).

I have both this transformer and a backplate for the AG7600 in the A3 573 subgroup. I've unoficially named such subgroups "vol = vol" which is really a bad reference but it conveys the message of what I think was happening at the time. The old system was full for practical intents and purposes and they were awaiting the new 12NC system that was introduced gradually from 1963 on.

The PL114 date code could, given the context, only realistically point to 1964 week 11 or 1971 week 14. A some point in time in the mid 1960's, they switched the system around from WWY to YWW.