Q Codes & Radio Cheat Sheet 🛡️ 150+ Entries

Q signals · QN · Z codes · CW shorthand — Search & Copy
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📘 Q Codes & Amateur Radio Signals Explained

Q codes are three‑letter abbreviations used in radiotelegraphy. They can be a question (e.g., QRM?) or an answer (e.g., QRM). This cheat sheet includes standard ITU Q codes, ARRL QN signals for nets, historical Z codes, and common CW slang.

❓ Frequently Asked Questions

What is the difference between Q codes and QN signals?

Q codes are international (ITU). QN signals are specific to ARRL NTS message handling nets.

What are Z codes used for?

Originally military/commercial (Cable & Wireless), some are still used in CW for operating adjustments.

Can I use this offline?

Yes, all data is embedded. The page works without internet after loading.