[GreenKeys] Model 15 on TWX

[Don Robert House]

Jim,

I have forgotten where the loop was keyed.  The last time I looked at a
101A data set in a model 28 was 1967.  I also do not have any drawings
of the 101 series or the 105 data set.  In San Diego I had some drawings
of 101D but they were used in 33 and 35 machines.

I remember quite a bit, but this question does not connect with my  
memory.
The M20 here has an SMD card but it does not look like anything else
that Teletype made.  Someone who worked for Associated Press might
remember. Most of our M15s on TWX were gone by the time I started
in 1966.

Best,
Don

On 31 Aug 2012, at 10:17 AM, Jim Haynes wrote:

The other day I saw a Model 15 as set up for Dial TWX.  Prompts me to  
ask,
what did the Bell System do to drive the selector magnets from the 101
modem?  Was that something built into the modem, or was there an  
external
circuit?  (since the 101 modems used with 32/33 machines had low voltage
to drive the loop to the selector magnet driver)



jhhaynes at earthlink dot net
_____________________________________________________________