I am SV1XV, more information about my amateur radio activities is available at QRZ.COM 
I am trying to contribute to and improve the following WP projects:
- Wikipedia:WikiProject Amateur radio
- Wikipedia:WikiProject Military history: Editing articles about traditional (pre-1990) military radio communications systems and equipment. I also tag relevant radio communications articles (stations, equipment) for WPMILHIST and associated task forces.
I also own quite a few books on radio related subjects (mostly in english and a few in german) and I try to insert book references in related WP articles & Wikibooks.