[GreenKeys] Plug and Play RS-232 Connection for Teletype Model 33

[Mike Douglas]

I've developed a small board that provides a plug and play connection between a Teletype Model 33 and an 
RS-232 serial port. Here's a link to a video that demonstrates the new board. (If you don't want to watch 
the whole video, start watching at the 4:20 mark in the video.)

https://youtu.be/PNbo46Yw92M


The new board plugs directly onto the P2 connector in the rear of the Model 33 Teletype where it picks up 
the transmit and receive data loops and also picks up power from the 48vac supply provided on the 
connector. The RS-232 connection is via an RJ-14 modular jack. Modular DB-25 and DB-9 connectors for the 
other end of the cable are still readily available.

The board uses SMT components and the 16 pin switching regulator has 0.5mm lead spacing. In addition, the 
back of the regulator (inaccessible with a soldering iron) is a large ground pad and must be soldered to 
the board for proper thermal conduction. For these reasons, the board will have to be pre-assembled by an 
SMT assembly house.

Pricing will be $40-$70 depending on how many boards I run. If you are seriously interested in buying one 
of these boards, please contact me at deramp5113 followed by ASCII 0x40 followed by the yahoo domain name 
so I can get a count started and run the first batch as soon as possible.

Mike
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.qth.net/pipermail/greenkeys/attachments/20181007/220e98b4/attachment.html>