[GreenKeys] M19 Table in a Box

[Dave Beck]

John

Your efforts are very much of interest to me since I’m in a similar situation. I had a 15 in high school in the late 60-70s. I bought it from my high school ham club since no one had interest in it. I got it working, and found a tape punch and reader for it making it into a 19 basically. But college and family life came along making it harder to lug around. In 1977, I  bought an early Commodore Pet computer and spent a winter figuring out how to use the 15 as a printer for it. I made it work, but eventually bought an ASCii printer and gave the 15 to a fellow ham. 

Fast forward 40+ years and I joined this group so that I could get another 15 and interface it again to my old Pet which I still have and just restored. After listening in for several months, I learned of Jim Taylor of this group and bought a 15 from him. Like many of the guys on this group, he is very knowledgeable about tty and very helpful. The unit he sold me is in great shape even though it’s dated fungicide treated in 1945. 

So like you, I am breathing life back into my 15. I’ve downloaded everything I can find on the 15 from member sites. I’ve cleaned it up, lubricated it and  got it working. I acquired an ST6 TU fixed it and got the two working together. Next is to interface it to my ham equipment, the internet and finally my Pet computer. 

I enjoy listening to the stories here and like everyone here, I appreciate the well built tty devices our predecessors built. They are cool and always impress visitors. 

Dave Beck. W9RAG
Sent from my iPhone

> On Dec 7, 2023, at 11:37 AM, John Spigel <w1an.dxusa at gmail.com> wrote:
> 
>  It's good to see all here that value the ingenuity and creativity of the past, and more importantly, enjoy it, and share. I'm new to this list after very recently reintroducing myself to the TTY world. My first experience was long ago in the mid 1960's with an M15. In the late 1970's I dragged home from my workplace a fully loaded ASR33 with the embedded phone modem, along with boxes of paper and tape. It had been abandoned in place by NJ-Bell. I did not start to work with it until a couple years later, after a move, building a homebrew solid state TU unit. Then, little did I know, hams were only working with 5-bit. At the time there were few home computers or a foreseeable need, so sadly and to create space, the machine went to the curb.
> 
> So this year after almost 40, I picked up some pieces and parts thanks to Bob K1QVX and Jim W2JC to recreate/relive/cherish the past and restore to life a M19 and M15 pair. I'm still scrounging for parts, but have made good progress in the last month or so. My M15 has been cleanud up, is printing and is waiting for proper lube and a few keytops. The cabinet will need some paint, glass, etc. My M19 table has been scraped of loose rust, spot sanded and Por-15 primed and painted. The Thyratron P.S. unit sits under a work bench for now and will need some careful study on its needs. I've built up what I call a "Table in a Box" to provide loop and DC needed for bench repair for the M19 printer, KB and punch. There's no room in the barn for the full table!  The box could be used in place of the full P.S. if needed! I have some progress pictures on a webpage.
>  
> https://w1an.com/tty-project
> 
> The unit uses a conventional full wave bridge with choke input filtering, a 10 ohm series resistor for monitoring the loop current and receptacles for the printer and punch DC. (I have some extra Nema receptacles if someone needs them.)
> 
> Hope this is of interest!
> 73, John W1AN ______________________________________________________________
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