Is there something missing here? Eumig Mark S709 vs s712D

[Joseph Banfield]

None of that extra hardware was done at the factory. It's hard to say what that external connector is for exactly but it looks rather crude and dodgy to me. So, your guess is as good as mine as to what it could have been used for.

[Steve Klare]

Somebody worked very hard on all this!

(I hope it was worth it!)

[Paul Adsett]

What's got me puzzled is the 'PULSE' decal. And you can just make out some of the lettering in sanscript (its like reading the Dead Sea Scrolls!) which may be ' VIA SYNC'. Maybe it was an attempt at instant start up for external tape input or something. There is no way that I know of that the Eumig's could be modified for pulse sync recording. Maybe the previous owner found that out!

[Ken Finch]

Just wonder if it was the feed to and from a loop synchroniser e.g, a “ Synchrdeck” In which case the internal leads would be connected to the supply feed to the motor. The original feed being cut and the feeds from the synchroniser inserted. However when not in use the plug connecting the socket would have to had to be bridged, or perhaps the switch besie the socket did this. Just a thought. I could be wrong!! 😉