I first became interested in radio about the age of 15, I studied electronics and telecommunications and I got my first license as ham receiver in 1995 using the callsign YO70021/VL. Starting with 1996 I passed the novice license and start actively using the VHF and UHF ham frequencies with the callsign YO7GTM. From 1999 I got awarded with class A, same callsign.
In 2007 I received a permanent A class license operating from Denmark using the callsign OZ7GTM.
Due to my profession traveling abroad I received a temporary license to operate in: