Para se ter uma melhor idéia sobre o resultado dos sinais de rádio recebidos, o site 'Distance Between Cities Places on Map' permite a verificação imediata de distancias geográficas entre dois pontos em quilometros e também em milhas.
Opposition Shortwave Broadcast Guide" by Steven Handler is
available from Amazon.com (Kindle eBook). Published in late September
2012, it contains a detailed list of clandestine and opposition shortwave
broadcasters listed by time (GMT). Included are frequencies, and for most of
the listings, the target of the broadcaster, transmitter sites and other
information. There are also several chapters with information about the
operations of several of these broadcasters. Another Chapter covers
QSLing clandestine and opposition shortwave stations and provides a number of
postal or email address.
The price is $3.99. For more information,
including sample pages visit Amazon.com, Amazon.de or
The books Amazon stock number is ASIN: B009HC5ESU .