Radio Setup:
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Morse code, SOS signal reception
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Morse code transmission
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Energy buildup, Electronic signal
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High-frequency squeak, Low-frequency rumble
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Police radio
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Electronic signal
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High frequency squeak
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White noise
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Low frequency pulsing and humming signal
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Reception, Morse code, transfer
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Welcome, Morse code
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High frequency pulsating electronic signal
★★★★★
