I am living in southern Europe and it's extremely hard to listen a Number Station except for the most famous (The buzzer, the Pip, etc.). I rarely had the oppor

I am living in southern Europe and it's extremely hard to listen a Number Station except for the most famous (The buzzer, the Pip, etc.). I rarely had the opportunity to listen some non Russian NS. You need a decent radio with SSB support and a good antenna. Most of the cheap RTL devices are not covering HF band. For whom that want to start, my suggestion is to buy a Belka-DX: it's cheap (less than 150€), very portable (comparable to a cigarette box), it covers from 1.5Mhz to 30Mhz and has SDR capabilities (although with a very narrow bandwidth).