Fwd: [GreenKeys] Model 28 200 WPM Reperf???

[Don Robert House]

Begin forwarded message:

> From: K9kom at aol.com
> Date: November 8, 2005 2:39:06 PM CST
> To: drhouse at nadcomm.com
> Subject: Re: [GreenKeys] Model 28 200 WPM Reperf???
>
> Hi All,
>
>        The standard LRPE was a non-typeing reperf which ate serial  
> signals in the conventional manner.   It would be interesting to  
> know if this unit with its two stop clutch has a real serial  
> selector on it.
>
> A similar nontyping reperf coded the LARP was fed parallel  
> signals.  Since it didn't have to decode a serial bit stream, it  
> was geared at 200 wpm, which was basically a two stop clutch with  
> 100 wpm gears.
>
> The parallel signal readers and reperfs were used for short haul  
> cross-office runs at a relay station, or on an RT set.  Sometimes  
> they were used for crypo applications; two parallel readers driving  
> a parallel punch made a highly effective encyphering unit as long  
> as you didn't repeat the cyphering tape too much.
>
> Parallel punches were also used as cheap outputs from early  
> computers.  I seem to recall one cheap Dataspeed system using them  
> with a 400 series data set, which sent signals in parallel.
>
> Ben Stephens
> K9KOM=
>
> NNNN