SDR — What It Means in Ham Radio

SDR — Software Defined Radio.

A radio where the signal processing happens in software rather than in fixed circuits. It is why a modern radio can show you a picture of the whole band at once.

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Related words

• Rubber duck — The stock antenna on a handheld.
• HT — Handy Talkie. A handheld radio.
• Dipole — Two legs of wire.
• Feedline — The cable from radio to antenna.
• Antenna — The thing that actually radiates your signal.
• VOX — Voice Operated eXchange.
• Yagi — A directional beam antenna.
• PTT — Push To Talk.