[GreenKeys] Teletype M12 KSR owners
Ed Sharpe Archivist for SMECC via GreenKeys
greenkeys at mailman.qth.net
Fri Jan 23 23:34:47 EST 2015
Remember SMECC has these... I donated my collection of them and Jim
Haynes had scanned some ... we are still looking more but you will find some
model 12 stuff in the mix here.
What a great resource these are... if you have any of the missing issues
let us borrow them to scan or you can scan and send files and all can
use the publications!
SMECC is of course interested in obtaining model 12 for the collection
here too.
Thanks Ed Sharpe Archivist for SMECC
ARTS - Amateur Radio Teletype Society
History and Bulletins
>From the Jim Haynes and Red Wilson collections at SMECC
Bulletins
_9_ (http://www.smecc.org/arts/09.pdf) _10_
(http://www.smecc.org/arts/10.pdf) _11_ (http://www.smecc.org/arts/11.pdf) _12_
(http://www.smecc.org/arts/12.pdf) _13_ (http://www.smecc.org/arts/13.pdf) _14_
(http://www.smecc.org/arts/14.pdf) _15_ (http://www.smecc.org/arts/15.pdf) _16_
(http://www.smecc.org/arts/16.pdf) _17_ (http://www.smecc.org/arts/17.pdf)
_18_ (http://www.smecc.org/arts/18.pdf) _19_
(http://www.smecc.org/arts/19.pdf) _20_ (http://www.smecc.org/arts/20.pdf)
_21_ (http://www.smecc.org/arts/21.pdf) _22_
(http://www.smecc.org/arts/22.pdf) _23_ (http://www.smecc.org/arts/23.pdf) _24_
(http://www.smecc.org/arts/24.pdf) _25_ (http://www.smecc.org/arts/25.pdf) _26_
(http://www.smecc.org/arts/26.pdf) _27_ (http://www.smecc.org/arts/27.pdf) _28_
(http://www.smecc.org/arts/28.pdf) _29_ (http://www.smecc.org/arts/29.pdf)
_30-31_ (http://www.smecc.org/arts/30-31.pdf)
_32_ (http://www.smecc.org/arts/32.pdf) _33_
(http://www.smecc.org/arts/33.pdf) _34_ (http://www.smecc.org/arts/34.pdf) _35_
(http://www.smecc.org/arts/35.pdf) _36_ (http://www.smecc.org/arts/35.pdf) 37 38 39 40
_41_ (http://www.smecc.org/arts/41.pdf) _42_
(http://www.smecc.org/arts/42.pdf) _43_ (http://www.smecc.org/arts/43.pdf) _44_
(http://www.smecc.org/arts/44.pdf) _45_ (http://www.smecc.org/arts/45.pdf) 46 47 48
_49_ (http://www.smecc.org/arts/49.pdf) _50-51_
(http://www.smecc.org/arts/50-51.pdf)
_52_ (http://www.smecc.org/arts/52.pdf) _53_
(http://www.smecc.org/arts/53.pdf) _54_ (http://www.smecc.org/arts/54.pdf) _b-1488_
(http://www.smecc.org/arts/b-l488.pdf) _Intro_
(http://www.smecc.org/arts/intro.pdf)
_Reprint early bulletins printed on tty paper _
(http://www.smecc.org/arts/selection.pdf)
>Resource page in the rtty_ratt_radio_teletype sub area of the
Teleprinter section on SMECC
http://www.smecc.org/rtty_ratt_radio_teletype.htm
In a message dated 1/23/2015 7:18:54 P.M. US Mountain Standard Time,
ka2wft at arrl.net writes:
My M12, sadly, is not running. The individual components are
functional, i.e. I can power up the motors on the keyboard and the
printer and they run and they are mechanically complete, but the machine
as a whole does not run. I acquired my machine in the early 90s from an
older local ham when he was downsizing and he had completely rewired the
machine to work with a tube keyer to minimize the RFI when using it on
the air. The keyer was not operating, there were no schematics, etc.
He had completely rewired the table to work with the keyer ... and had
done things like wire the power leads to the printer and keyboard motors
with 20 AWG wire!!
I removed all of his wiring and have tried to get it back to original,
yet all I get on the machine are random characters. The keyboard works
as I can drop it into the local loop here and can type on it just fine
to the other machines in the collection.
I am fighting a number of variables: the condition of the contacts on
the table and the keyboard and printer, the contact block on the table
is cracked and needs to be glued or epoxied back together, and the
keyboard itself has been completely rewired at one time and the last
time I spent some time with the project I had come to the conclusion
that contact wiring on the keyboard doesn't match a schematic that I
have for the M12 keyboard.
When I first got the machine I set it up on the kitchen table one
evening and hooked it up with every clip lead I own and managed to be
able to type on the keyboard and have it print on the printer. I recall
that I couldn't type at full speed on the keyboard and have the printer
follow accurately and all of the machinery made a tremendous racket, as
well as the electrical part of it creating a ton of RFI. So I know it
*should* work, but that table wiring is proving to be elusive for
something that should be relatively simple. And of course there is
never enough time for all of the projects.
I do have the cover for the machine. I will try to get some photos and
measurements of it. I believe Don needs that information as well and I
think I promised him that a long time ago :redface:
I haven't been to the AWA museum yet. It's been a "gee, we should do
that sometime" item for a local ham radio buddy and me for some time
now, but we haven't managed to do it.
Oh, and yes, you do need a separate DC supply to run the selector
magnets in the printer.
73,
Doug, KA2WFT
On 1/23/2015 8:51 PM, Duncan Brown wrote:
> Doug Alderdice
> Steve Ripper
> Gerry Block
>
> Is your M12 working??
>
> I'm looking a the M12 schematic, fig 2.2a1, in Kretzman's RTTY Handbook.
> Am I correct that you need a separate 110VDC, _260 ma_ supply just for
> the selector magnets (separate from the loop supply)?
>
> The unit we have has a new terminal strip with new wiring and about the
> right number of terminals, so I am assuming (hoping!) it is wired
> similar to fig 2.2a1. (unit is at the Museum, so I won't get to play
> with it again until Tuesday.)
>
> What holds the paper roll? Is it mounted on the cover? (I don't have the
> cover.) There was a sheet-metal u-bracket mounted to the inside of the
> table. It was falling off, so I removed it. But now I am thinking
> maybe its purpose was to hold the paper roll! (I think that I can
> "borrow" a bracket from a M26.)
>
> Doug - we are practically neighbors! Have you ever been to the AWA
> Museum?? We have lots of TTYs (besides wireless equipment). Come over
> some time & I give you a personal tour!
>
> Thanks & have fun,
>
> Duncan Brown, K2OEQ
> USASA 31J30
>
> Antique Wireless Association Museum Asst. Curator, Commercial Equipment
> (also Chief TTY operator & repairman)
> http://www.antiquewireless.org/
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