16 Nov
2007
16 Nov
'07
6:56 p.m.
Hi,
dwight elvey said:
Colossus was built to decode messages in rtty code sent by
the Lorenz Geheimschreiber cypher machine.
From: wdonzelli at gmail.com
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. 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 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!