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Unknown British reference designator system - Answers sought
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Neomys Sapiens:
Here is a picture showing the rear cockpit bulkhead of a 50s vintage EEC Canberra jet bomber.



So, obviously, there was or is a coding system for reference designators which assigned the letter 'N' to connectors. Not 'P' and 'J' like ANSI nor 'X' like the IEC/ISO derived from DIN.

Can anyone provide information on this designation system? The name of the related document would be as helpful as the complete or even partial content.

Please respond, as I am ever busy compiling such information!
fourtytwo42:
I suggest you try https://www.vintage-radio.net, they have a military radio section.
SeoulBigChris:
In the ANSI standard I seem to be recall there is reference to using N for repeating circuits? Although in this picture it looks like connectors.
RIKRIK:
??? https://en.m.wikipedia.org/wiki/N_connector
dmills:
Those are however clearly NOT N connectors...

Looking at the crimp rings where the connector joins the black sleeving, I wonder if that is electrical at all, could be air operated instruments (Very much a thing in aircraft, they use ram air to spin various forms of gyroscopic reference platforms)?

Regards, Dan.
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