- Wikipedia: Q Code
Encyclopedia article about Q code, the codes used by ham and amateur radio operators. Q codes are three letter sequences, all starting with Q.
en.wikipedia.org/wiki/Q_code
- List of Q-codes
Glossary of Q-codes used by amateur radio operators and aeronautical or maritime agencies. Sorted alphabetically.
www.kloth.net/radio/qcodes.php
- Amateur Radio Q-Signals
Quick reference to Q-codes or Q-signals, three letter codes used by ham and amateur radio operators.
www.arrl.org/files/bbs/general/q-sigs
- Q-Signals 1909
1909 handbook for telegraph and radio operators, describing the original Q-codes.
www.telegraph-office.com/pages/q-signals-1909.html
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