Designing the Post Office’s first modem
As one of your older readers, my memories of teleprinters and Telex are very real (‘Whatever happened to Telex?’, Issue 502, page 69). Fifty-two years ago, I think, I designed the first modem for the Post Office, in pre-bt days. It worked at 600 Baud (bits per second) at a time when transistors were first being recognised as reliable.
I also designed one for the military that worked at 1500 Baud. I had joined the Army as a Gunner, but then became a radar technician. So began a career in electronics after the war. Thanks for the memories!