The early years of radio history saw operators using only Morse code to “talk” with each other. Samuel Morse had originally devised the code of short and long taps in 1836 to send messages over wires using a telegraph. However, people later adopted a shorthand system of three letter codes, many beginning with the letter “Q”, to send common phrases.
Operators used the code “QSL” to confirm that they had received the message. Eventually, radio operators began making QSL cards to mail to people around the world after they had “talked” to them.
At HCJB, QSL cards are offered to encourage radio listeners to write the station, building a personal relationship through correspondence and providing another opportunity to share Christ.
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