★Italia Storica
Spionaggio in onde corte
In italian language. The so-called Numbers stations are shortwave radio transmissions, broadcast in many different times of day, and with varying lengths, available on many frequencies and observed and studied for decades by amateur radio operators around the world. These transmissions consists in mysterious voices reading groups consisting of numbers or letters in the international phonetic alphabet, or Morse code signals or pulses of sound, and are often preceded by "callsigns" consistin…