Link

Calendario Contest   ______>       http://www.qsl.net/contest_ari/calendario.html 

425 dx news_____________>       http://www.425dxn.org/

propagazione ____________>       http://www.hamqsl.com/solar.html

Near-Real-Time MUF Map__>       http://www.spacew.com/www/realtime.php

AMSAT  _ ( satelliti )_______>       http://www.amsat.org/?page_id=177