Early Technology
Family
Our town was the Movie Industry capital of the U.K.
During those first ten years, my life was a whirlwind of exciting experiences. Grandfather put on a play twice a year: Puss in Boots, Jack and the Beanstalk, excerupts from South Pacific, ballets, and other musicals I can't recall.
My first job, which I took in order to be paid for work and college – a National program of the IEEE to develop engineers that were desperately need in the U.K. – was to design an ELT for the RAF. This was an Emergency Location transmitter (ELT) that would be worn by an Airman and activated if he dunked in the Ocean.
The only ELT at that time used valves and was attached to the aeroplane. My task was to make a small battery powered device using transistors that could be worn.
No knew how to make transistors work at high frequencies in 1962 The RAF used 243 MHz frequency for emergency communication, and commercial pilots used 121.5 MHz. I had to design something that would transmit on both frequencies. The problem was that although valves could operate into the K-Band (TACAN) transistors maxed out around 50 Mhz in normal circuitry. I spent the first two months in the Company Library learning about transistors. The prototype was just a small rectangular aluminum box with two oscillators, but it put out 100 milliwatts of RF at the two frequencies. It was the beginning of the ELT put into production in 1969 after I left for Canada.