Ham Radio
www.qrz.com - Callsign Database
www.p1k.arrl.org - LoTW - Logbook of the World
www.qrz.pl - Polish Callsign Database
www.callbook.pzk.org.pl - Polish CallBook
www.pzk.org.pl - Polish Amateur Radio Union
www.radio.org.pl - Polish RadioSerwis
www.dxserwis.info - DX Serwis Info - PL
www.sm6.sector7.nu - DX Cluster
www.dx.qsl.net - DX.QSL.NET
DX Summit - DX-Spots
www.dxinfocentre.com - Tropospheric Ducting Forecasts
Orbita - Ham Radio Satellite
Climbing
www.climbing.com - Climbing Service
www.redpoint.pl - Polish Climbing Service
www.medius.pl - Climbing Photo Gallery
Photo Gallery
www.plfoto.com - My Photo Gallery on Plfoto
www.medius.pl - Photo Gallery