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Ulrich Gerlach
Professor of Communication Technology at FH- Düsseldorf- University of Applied Sciences, Germany. Ham radio operator, licenced since 1980, callsign DF4EU. Retired since 2000.
Professor of Communication Technology at FH- Düsseldorf- University of Applied Sciences, Germany. Ham radio operator, licenced since 1980, callsign DF4EU. Retired since 2000.
