On April 18, we mark World Amateur Radio Day. On this date in 1925, the International Amateur Radio Union (IARU) was founded. In Bulgaria, the foundations of the organized amateur radio movement were laid in 1926, when 38 people of..
In radio amateur circles it is popular to send and receive the so-called QSL-cards – written confirmation of radio communication. The name derives name from the Q-code as "QSL?" means "Do you confirm reception?" and "QSL" means "I..