[GreenKeys] Manual for HAL RKB-1 Keyboard?

[Nick England]

Thanks to Duncan and the AWA, the RKB-1 manual is now posted at
https://www.navy-radio.com/rtty/hal.htm

This keyboard and the Morse MKB-1 use a character coding scheme I have
never seen before. A wire from each key is threaded (or not) through a
series of toroids, one for each “bit” in a character. Through is mark, skip
is space. Similarly for dot-dash in the Morse version. A pulse is fired
through the wire when a key is depressed and the secondary of the toroid
sets the corresponding bit in a shift register. Cool!

Nick England K4NYW
www.navy-radio.com


On Wed, Oct 2, 2024 at 4:50 PM W2HX <w2hx at w2hx.com> wrote:

> HAL had this TTY keyboard with a loop interface. Anyone have any
> documentation on this? Google was not fruitful.
>
>
>
>
>
> 73 Eugene W2HX
> My Youtube Channel: https://www.youtube.com/@w2hx/videos
>
>
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