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Ham Radio Technician Class Test Study Guide 2022–2026: Everything You Need to Know to Get Your Technician License, by Ria Jairam

What type of signaling uses pairs of audio tones? A. DTMF

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Ham Radio Technician Class Test Study Guide 2022–2026: Everything You Need to Know to Get Your Technician License

Ham Radio Technician Class Test Study Guide 2022–2026: Everything You Need to Know to Get Your Technician License

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