The Q code is a standardised collection of three-letter message encodings, all starting with the letter "Q", initially developed for commercial
radiotelegraph communication, and later adopted by other radio services, especially
amateur radio. Although Q codes were created when radio used
Morse code exclusively, they continued to be employed after the introduction of voice transmissions. To avoid confusion, transmitter
call signs have often been limited to restrict ones starting with "Q" or having an embedded three-letter Q sequence. The codes in the range QAA-QNZ are reserved for aeronautical use; QOA-QOZ for maritime use, and QRA-QUZ for all services.
See more at Wikipedia.org...
Free Download Now!
