[GreenKeys] Information on Extel Printer

[COURYHOUSE at aol.com]

if  you  tire  of the  Extel printer with RCA  logo   we would display it 
ain the  'tools tf the  journalist  display.   not as  cool as a 15  but   
still one of the  tools and as the   old guard passes    will be  people that 
remember the  Extel as 'THEIR UPI PRINTER"
 
Ed Sharpe archivist for SMECC
 
 
 
In a message dated 5/28/2013 10:15:31 P.M. Mountain Standard Time,  
n8uhn at yahoo.com writes:

Ahh, so  it was UPI.

ok that makes sense as there is an rca service sticker on  the side.

there are two boards in the extel case that holds the printer  and one 
appears to be a tone demod.

another list member did note that  some extels used 60 ma current loop 
interfaces.

i'll check for the  contacts on the carriage sides.

now to find an ibm serial card from the  pc xt days so i can try to get it 
to print.

the ibm 8 bit single db25  port serial cards are jumper convertible for 
current loop.


after i  find the card i should be able to get the unit to print providing
i can  find the connection points for the tone demod and bypass it to feed 
the  loop.

it's gonna be awhile as the serial cards are getting hard to find  and 
other converters are pricey.

i find your 30 year old memory quote  interesting as this printer was found 
in the cold storage area of a local tv  station and has been there for 20 
to 30 years!

the poor thing was in an  okidata printer box and all these years we 
thought an old okidata was in the  box - imagine my surprise when we opened the 
box during spring cleaning and i  saw a teleprinter!

i kindda miss the model 33asr's i once had but there  is a model 18 or 19
in a radio stations storage i may ask for.

not  sure about the exact model but is has a keyboard so it is SR and it 
had  typewriter style printing keys (no type ball or cyl) and the grey or 
black  crinkle finish case.

Bill



Sheldon wrote:


I am  going to go out on a limb, as I am having to go from memory of things 
I knew  more about, roughly 30 years ago.

If the Extel printer had an RCA logo  on it, it was probably in UPI use.  
UPI used RCA Service to maintain  their equipment, while the AP tended to use 
in-house technical staff to keep  their machines working.

The print head is seven pin, with a small  electromagnet to drive that pin 
to print the portions of the completed printed  item, as the print head 
stepped across the paper.

Any possibility the  model is an AH-11R?

The AP Extels were generally loop current driven,  as the AP had numerous 
Lenkurt 25A stand-alone single channel VF  demodulators.

The UPI Extels were generally outfitted with a tone  demodulator which was 
installed in the Extel case.   
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