MICROFLEX

It must have been in the early '70s that I became interested in data transmission over radio. My school for Electrial Engineering in Amsterdam (the ETS, a great school) supported my enthusiastic and gave me two Siemens T37 telex machines. Those things weighed a ton, and it was a hell of a job to get them going again, but after a lot of fiddling with audio filters and discriminators, I finally knew the converting alternating tones on the shortwaveinto legible writing. And vice versa! "RYRYRYRYRYRYRY CQ CQ CQ de PE1BOS" A little later I got access to a beautiful sky-blue Siemens T100S Telex, complete with punched tape writer/reader. After that it became a green teletype video display unit and a IBM EBCDIC keyboard that I converted to ASCII and - later still - the Apple II+ with its plug-in cards and various TNCs for AMTOR, FEQ and AX25... The art of electronic engineering. Hard- and software development. HAM Radio. PA3AJR