[GreenKeys] W.U. F1/F2 Telex sub-set

[Kevin H. Phillips]

I need some help with a "mystery" piece of equipment I have.  I have two 
or three of them that came with Model 32 Telex machines I acquired from 
different sources.  I will try to attach photos of it.  Ken Gartland has 
kindly given me a lot of information and Wayne has been giving me great 
advice, as usual, trying to get a 32 working for i-Telex.  This 
apparently was a "modem like device" used to send Telex signals over 
regular telephone lines after DC loop lines were discontinued.  The 
device has AC power, a 3-wire cable that connects to Terminals 8 & 9 
(the loop connections) on the back of the Model 32 call unit, plus 
Ground, also a 4-wire telephone-type cable with modular connector on one 
end.  The thought is that these were activated (if that's the right 
term) by frequency sets from one end of the line.  What I am thinking of 
doing is trying to use one, or more, of these devices to test my 32's to 
see if they will work for i-Telex.


Here are some of the questions I have:

1.  What were the frequencies of the tones used?


2.  Are the tones shifted or constant?


3.  Can I use a computer to generate the tones?


4.  Can I use AFSK tone generators on some of my T.U. equipment such as 
the HAL ST-6000 or 8000?


5.  Could I connect two of the devices back to back, or with machines on 
either end, to simulate sending/receiving Telex messages?


I hope these questions are phrased understandably.


Thanks,


Kevin Phillips

W5TTY



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