[GreenKeys] M19 Table in a Box

[William Wuttke]

It's nice to see another M19 coming back to life. Now you need to get it on
the air so you can have a chat with another ham with one of these wonderful
machines. Here's a few QSOs I've had:
[image: IMG_1867.jpeg]
Have fun!
73,
Bill
KE3BK

On Thu, Dec 7, 2023 at 9:37 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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