2600 hertz (2600 Hz) is a frequency in hertz (cycles per second) that was used in telecommunication signaling in mid-20th century long-distance telephone networks using carrier systems. Tone signaling carrier systems operated in the standard telephony voice frequency range (300Hz to 3500Hz).
2600 hertz (2600 Hz) is a frequency in hertz (cycles per second) that was used in telecommunication signaling in mid-20th century long-distance telephone networks using carrier systems. Tone signaling carrier systems operated in the standard telephony voice frequency range (300Hz to 3500Hz).
Source: Wikipedia "2600 hertz" · CC BY-SA 4.0
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