[GreenKeys] Two rare model 11 machines turned up in Finland!

[COURYHOUSE at aol.com]

JUHA> 
Here is a radio news 1922 pdf article on that  radio teletype ground  to 
airplane
http://www.americanradiohistory.com/Archive-Radio-News/20s/Radio-News-1922-1
1-R.pdf
I have copy if this mag. I need to find  and I will get even a much  better 
image...
 
DUNCAN>  Thanks  for these book links!
 
 
Ed Sharpe - Archivist for SMECC  _www.smecc.org_ (http://www.smecc.org)  
 
 
 
 
In a message dated 11/21/2016 8:50:32 A.M. US Mountain Standard Time,  
duncanancy at earthlink.net writes:

Juha,

Thanks for the pictures of your great find of M11  machines!!  Also 
thanks for the Collections Online link - I had not  seen that before!

The M11 was designed as a small, compact, tape  printer that operated at 
50wpm and was typically used for local message  service, such as in 
hotels and other businesses.  There was a  receive-only version with a 
glass top that was designed for stock ticker  service. This was one of 
the first start-stop, serial, 5-bit machines. (In  the early 1920s, most 
printing telegraphs [including the Morkrum M12] were  used on 
synchronous, multiplexed systems.)

There is an article in  "Journal of the Western Society of Engineers" vol 
XXVI, March  1921
"The Development of the Printing Telegraph", by J.  O. Carr (chief 
engineer, Morkrum Co.) that you  can find on Google  Books. The first 
part of the article is on the history of the printing  telegraph, but on 
p131, he starts talking about Morkrum's newest unit the  M11 and gives 
some good description of it. You can get to the article  at:

https://books.google.com/books?id=Z0wyAQAAMAAJ&pg=PA124&lpg=PA124&dq=Wheatst
one+Mallet+Perforator&source=bl&ots=nnb_QW2imO&sig=uKKDfCs0oKCT9dGvnBNvI-cCE
iE&hl=en&sa=X&ei=cDyLVO__GtKcygSR5ICQAQ&ved=0CCIQ6AEwAQ#v=onepage&q=Wheatsto
ne%20Mallet%20Perforator&f=false

though  this will put you into a section of the article on the Wheatstone  
Perforator. Just scroll down to p 131 for the M11.

There is a pdf  of the parts list Bulletin on the M11, Bul 1014, 
available on the Internet  somewhere, dated Jun, 1927, so they were still 
in  use then.   The "Morkrum" label dates  your machines as pre 1925 
(when Morkrum  and Kleinschmidt combined).

Besides the air-ground use of the M11, the  Krums also experimented with 
ground-based radioteletype over a distance of  almost 100 miles. I have a 
pdf of a 1922 article from "Radio News" on the  air to ground experiment 
with the M11 that I got from Jim Haynes, if   you are interested.

Good luck with your new find and have  fun!

Duncan Brown, K2OEQ
USASA  31J30

Antique Wireless  Association Museum Asst. Curator, Commercial Equipment
(also Chief TTY  operator & repairman)
http://www.antiquewireless.org/


On  21-Nov-16 09:06, Juha Lahtinen wrote:
>
> Hello
>
> It  did Print Text.
>
> Here is nice pics from England when I just  Google” Morkrum Teletype”
>
>  
http://collectionsonline.nmsi.ac.uk/browser.php?m=objects&kv=8366680&i=382140
>
>  For Some reason I can see they have not find right History information  
> from your side.
>
> It would be interesting to know what  kind of  network Schema this 
> would work.
>
>  Thanks
>
> Best Regards  Juha
>
>


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