BBC coverage: Colossus vs. Modern hardware

[Stan Barr]

Hi,

dwight elvey said:
> 
> 
> 
> 
> > From: wdonzelli at gmail.com
> >
> >> AFAIK there's no transmission equipment as part of the SZ42 itself though, so
> >> something would still need to be hooked between that and a giant aerial in
> >> order to do the transmission; I think it was this bit that Will was interested in.
> >
> > No, I am interested in the thing that modulates the bitstream, before
> > the transmitter. The modem, basically, not the transmitter.
> >
> > --
> > Will
> 
> Hi
>  I thought most of these messages were sent to stations that only
> had operators. In that case, it would have been sent by hand with
> CW.

Colossus was built to decode messages in rtty code sent by
the Lorenz Geheimschreiber cypher machine.
 
>  Still, at the rates they were sending data in those days, FSK
> could have been as simple as a solenoid on a capacitor, tied to
> the frequency reference.

That was the normal way of doing things at that time.  Some of us
can still do it that way...
-- 
Cheers,
Stan Barr  stanb at dial.pipex.com

The future was never like this!