Colossus Secrets
I believe that several of the machines were moved to the new code-breaker's HQ in Cheltenham after hostilities ended; they have been working on this sort of thing ever since...
They did not need so many after WWII and just destroyed the surplus to help keep their code-breaking abilities and technology secret.
One of the problems that caused Colossus to be so late in completing its latest mission was poor radio reception, preventing the messages from being received correctly on the 1940s-tech receivers in use at Bletchley Park for the exercise. (AR88's); Joachim probably used a modern receiver as well as a modern computer. I guess he was also a bit closer to the transmitter too as it was only about 100 miles away...
Read more at www.tnmoc.org/cipher7.htm
73 cheers
Nick m0NjP


