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The Rutherford Journal - Colossus: Breaking the German 'Tunny' Code
Good overview.
to colossus cryptography history retrotech turing ww2 ... on 13 September 2010
http://www.retrotechnology.com, .net/
Mostly 1970s computing technology. Lots of information. (2013 edit: I've spent far too much time poking around this site now!)
to 8080 cpm imsai retrocomputing retrotech test-equipment ... on 17 August 2010
"... an Engineering Perspective." Very interesting.
to bbc history music radio retrotech sound-effects ... on 26 July 2010
World Power Systems // Tom Jennings
Splendidly weird.
to art history retrocomputing retrotech ... on 26 July 2010
Old Sun and MC machines, and creative repairs to Telefunken hifi.
to audio electronics hifi retrocomputing retrotech ... on 20 May 2010
Sadly short on 5000-series information, but some good general advice.
to electronics oscilloscope repair retrotech tektronix test-equipment ... on 15 May 2010
Small, old oscilloscopes. Sometimes it's good to specialise.
to retrotech scope test-equipment ... on 14 May 2010
6V6 Vintage Radio & Audio Components
As it says.
to electronics radio retrotech shopping ... on 07 May 2010
The early history of the telegraph in Britain. Impressively detailed.
to communications history retrotech telegraph ... on 05 April 2010
This is a creative way of writing a retrotech web site.
to amusements electronics history radio retrocomputing retrotech ... on 13 March 2010
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tasty by Adam Sampson.