[GreenKeys] Model 28 Mark I vs Mark II

[Nick England]

> Speaking of which, the short-lived Mark I version used
> LK1 keyboard, LP1 typing unit, LMU1 motor, LESU1 control
> The Mark II series started with
> LK3 keyboard, LP3 typing unit, LMU3 motor, LESU3 control
>
> So, where are LK2, LP2, LMU2, LESU2 ??
>
> Nick England K4NYW
> www.navy-radio.com
>
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