From 1962 till 1987 working at coastal station Scheveningenradio/PCH as radiotelephony- and -telegraphy-operator.

Radio-radarengineer during my military service on aircraftcarrier Karel Doorman/pada.

Since 2009 working as radioamateur with Yaesu 450 and home-made (dipol)antenna for 40, 20 and 10 meters. See for description of antenna.

http://www.xs4all.nl/~pa0fri/Ant/Antmateriaal/antmateriaal.htm (dutch)