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This is an CCITT4 Key 4 Phone Tone.
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Phone tone, CCITT4 Key
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Phone tone, CCITT4 Key
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Phone tone, CCITT4 Key
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Phone tone, CCITT4 Key
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Loud click and clunk of cassette machine mechanism stopping
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Reverse beeps from an ambulance,engine idle, features radio chatter
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Male through a CB radio saying, "Whatever"
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Various call signs from a spacecraft radio transmission
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Ambulance in motion, with rattling from back of vehicle and some radio chatter