Teletype Model 33 SN xyz

Teletype Model 33

This belonged to my Dad. I remember playing a lot of Startrek(.bas) on it when hooked up to the 'ol Imsai. I'd sure like to get it working. One problem I have with getting it working is I left it behind when I moved! (S/N xyz. It's in storage where I can't get at it at the moment.) I would also be nice to add paper tape to it too.

Teletype mode 33 Wikipedia article

Help Resources

• GreenKeys is an email list devoted to the discussion of older radio teletype (RTTY) gear. subscribe here
• Teletype 101 at vintagecomputer.net
• Check the 20ma current loop to RS-232 conversion page here on the Retrowagon wiki for some help with 20ma <> RS232 conversion.
• Typewriter Platens restoration, parts J.J. Short & Associates (From Greenkeys) "... You will want 95 Shore A hardness and 1.1150 nominal finished O.D ..."

Wanted to buy

• Roll(s) of paper tape
• Typewheel hammer ?felt?
• Call Control Unit plate under rotary dial with holes for buttons

Goals

• Restore to operation as an S-100 computer interface

I've got parts to make a 20ma current loop to RS-232C adapter, but hopefully will be able to resurrect something like an Imsai SIO S-100 card in current loop mode for authenticity.

Restoration History

• 7/30/2015 Retrieved my Dad's KSR and bought an ASR on the way home.

• 8/4/2015 electronics details

Apparent current loop cable is attached to pins 1,2 and 7,8. There had been a DB25 connector on the bare end it's fallen off over the decades since last use.

Later in the evening

I need a spring to hold this bar up. I think it's called a "Function Pawl" Section 574-122-100TC

The piece I need the spring for goes in here somewhere!