[GreenKeys] Can Anyone remember this TU/Modem?

[Bruce Gentry]

I posted a question about TUs some months ago, and no one was able to 
identify it. The unit in question was homebrew, but supposedly based on 
an established design. It was tube, from the mid 1960s, and supposedly 
one of the best at the time. The main physical feature I can recall was 
four or more neon lamps in the center of the front panel. The builder 
told me it had a timing  or regenerator circuit that would produce a 
stop pulse and prevent the printing of more than one bad character if a 
noise burst corrupted a character. He was quite proud of it, and it 
seemed to work very well. Does this sound familiar to anyone? The TU I 
built was the old W2PAT circuit using TV horizontal oscillator coils for 
the filters.   That was just about all I could scrape up money and parts 
to build in high school tenth  grade in 1967.  How many of you remember 
the very popular bare-bones oscillopscope circuit using an 884 gas 
filled triode for sweep generation? I got hold of one, and the 884 tube 
was missing. However, it was fine  for an RTTY tuning indicator because 
sweep was not needed for cross-trace display.

    Bruce Gentry KA2IVY
>