[Boatanchors] Morse code - ECN and ACN?

[Nick England]

Of course, if I ever get it running, I’ll run a punched tape and find out
by experiment. Too bad there isn’t an AI program that can look at both
sides of a PC board and draw a schematic.
I’ve designed a a fair amount of logic usingTTL and CMOS ICs, but discrete
logic is a real pain to trace. Each of the 7 logic boards has 24-36
transistors plus associated resistors and diodes. (Plus another 7 boards of
diode matrix). Sometimes I can figure out a NOR gate but the input
resistors are scattered all over the board (or on another board). And a
flip-flop might have flip on one board and flop on another. If I had any
hair left to tear out, it’d be gone.
I have about 15 notebook pages filled with my reverse-engineered schematics
so far. I figure when I get finished, of course a manual will pop up on
eBay.
Maybe I should go back to tube radio gear.
Cheers
Nick

On Thu, Nov 19, 2020 at 12:38 PM Nick England <navy.radio at gmail.com> wrote:

> I am attempting to resurrect an early Frederick Electronics Baudot to
> Morse converter (hundreds of 2N404 transistors and a thousand germanium
> diodes) with no manual or schematic. Yes I should have my head examined.
> There is a mode switch labeled NML-ECN-ACN that is wired to the diode
> matrix that decodes the 5-bit Baudot pattern to the dit-dah pattern. Does
> anyone know what ECN and ACN means?
> Can you suggest a better forum for asking this question?
> 73 and Have Fun,
> Nick K4NYW
>
>
>
> --
> Nick England K4NYW
> www.navy-radio.com
>
-- 
Nick England K4NYW
www.navy-radio.com