Hello
I've recently acquired a rather hopefully good deal on a large lot of vintage testing equipment. I'm new to the hobby so I figured why not it will make good practice. Anywho I've hit a brick wall in finding many nos, OEM, or was in use connection for this equipment, probs and what not. Now my brick wall is this, (those who don't know will have to Google photos) I've acquired two big important pieces, a later '70s tektronix 465 ossiciliascope and a late '60s eico 369 sweep generator. My main goal is working with chaises AM and FM and phonograph. The brick wall is trying to locate a scope line from the eico 369 to the tektronix 465 x and y axis. I've seen this used on many different YouTube videos and antique forums mention building a RG - 22 Twin Axial and this is all that's mentioned. The output would appear to be a 2 open end cond female threaded vintage mic connection that would require a male screw on with two prongs that slide into the output and screw down tight. I haven't been able to find anything or anyone that knows what this is, how to make it or the specs, or even has one laying around. Back in the day eico was know for selling kits you could build yourself or a factory built equipment so maybe this was all hand built at one time I don't know. Again sorry I don't have any specs or any other knowledge about this connection but I'm hoping that someone out there knows or has something of this nature or I just inherited a book end.

 

Welcome to AAC!

Post photos so we can be sure of what you need, either off the internet or photos of the connections on your equipment.
Also I would suggest a different title than "Needle in a haystack".

 

The brick wall is trying to locate a scope line from the eico 369 to the tektronix 465 x and y axis. I've seen this used on many different YouTube videos and antique forums mention building a RG - 22 Twin Axial and this is all that's mentioned. The output would appear to be a 2 open end cond female threaded vintage mic connection that would require a male screw on with two prongs that slide into the output and screw down tight.

Your Google Fu fails you.
2 mins worth:
https://antiqueradios.com/forums/viewtopic.php?t=322638
https://bama.edebris.com/manuals/eico/369

 

The connection between a sweep generator and a scope would be for the horizontal sweep voltage. What sort of connector does the generator have?? I have mostly seen RG22 used for obsolete computer data cables. The standard shielded connector on that kit equipment was a single button microphone connector. I remove them and install a BNC panel mount connector that uses the same hole. Likewise for the scope inputs, unless the scope has binding posts. BNC connectors work much better and they are commodity items, as are BNC terminated cables.

 

The old Tektronix 465 is a great scope, I used them for many years. The manual that can tell you about everything you want to know can be found here. Next up, here is the manual for the Eico 369 sweep generator. The latter is from the BAMA (Boat Anchor Manual Archive a great source for old manuals.

Ron

 

Your Google Fu fails you.
2 mins worth:
https://antiqueradios.com/forums/viewtopic.php?t=322638
https://bama.edebris.com/manuals/eico/369

Nice you beat me to the BAMA manuals.

Ron

 

EICO made many kits, but they sold a good deal of fully assembled test equipment.

I have an EICO 628 tester, inherited from my late grandfather, who kept in pristine condition. It is a beauty!

These were fairly common, and I was able to get a manual reprint. Hope you are able to find one for yourself.

 

The connection between a sweep generator and a scope would be for the horizontal sweep voltage. What sort of connector does the generator have?? I have mostly seen RG22 used for obsolete computer data cables. The standard shielded connector on that kit equipment was a single button microphone connector. I remove them and install a BNC panel mount connector that uses the same hole. Likewise for the scope inputs, unless the scope has binding posts. BNC connectors work much better and they are commodity items, as are BNC terminated cables.

After reading the description a second time, it appears that the two pin connector is indeed what was often used as a balanced microphone connector, or with one pin for audio and the other for a PTT (push to talk) switch.
So you will need to open the case and see what circuits are actually connected there.
The standard arrangement for using a frequency sweeper and a scope only requires that the frequency control voltage be fed to the scope horizontal deflection input. So that two circuit connection is probably not the original one.