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StefanSince early childhood, I was interested in technology. How do things work? What can I do with them?
Installing contacts under the carpet to alarm me when parents are approaching was one of my early inventions. Everything possible to be decomposed, was decomposed by me. Sometimes even things actually not meant to be decomposed, giving me a hard time to reassemble them.

Later on the focus was on communication technology. Using a small (illegal) VHF transmitter and a conventional radio, I had the first two-way radio bridging about 50m. Playing around with the analogue telephone system was another of my favourites. When a schematic diagram of a so called acoustic coupler was published in a magazine, I immediately built one and used one of the first bulletin board systems. Unfortunately it was in Munich and I was in Berlin. This was good news for Deutsche Telekom and bad news for my parents.
Later I used a local X.25 gateway (PAD), which allowed me to discover interesting computer systems around the world, without having to pay long distance phone charges. This was long before the Internet.

In the HF communications group for disaster relief  of the German Red Cross, I learned the Morse code and how to use HF radios. Soon I passed the radio amateur license examination and got the call sign DF 1 YX assigned. Building a small 5W HF transmitter and communicating with Moscow using Morse code and a long wire as antenna was exciting! After all this emergency case practising with the Red Cross, I finally got the chance to help in two cases. Going to post civil war Rumania's capital Bucharest and setting up a HF radio station was challenging. The telephone system was practically not usable and our HF link to Geneva was mission critical. I got another chance to help, when someone to operate the German Red Cross' head station near Bonn was needed to keep up the contact to Red Cross volunteers in Armenia after the earthquake 1988.

Wireless communications was also the entry to my professional career. I started as service technician for professional radio systems. This included BOS radios for German police and fire departments, "Eurosignal" (a one-way paging system planned for Europe, but adopted only in Germany and Switzerland), and others.  After a couple of years, I wanted more and studied computer science in Berlin for 4 years.

When I got my degree, it was the time of deregulation on the telecommunications market and re-unification of Germany. The first private mobile network operator was launching its network, and I could be part of it! GSM made mobile telephony available for everyone, a revolution! This pioneering work was challenging, as all was new, no references, no colleagues to ask. But we succeeded and were soon proudly using our brick sized hand held phones.

When things settled down, I decided to change sides and work for the equipment vendor Nokia.
GSM networks were almost mushrooming everywhere. With this employer I had a lot of opportunities and I did many jobs from commissioning, over troubleshooting, on-site induction of new operator's personal, customer training, network assessments, product management and solution architecture. I am still with them and part of a new revolution, as networks are moving to all-IP.

This type of job calls for mobility, and so I stayed in multiple locations as Berlin, Helsinki, Düsseldorf and Bangkok.

Today I live in Bangkok, which serves as a hub for Asia Pacific. I am married and father of two daughters (twins).