What is the non-interference, non-protection basis that all Part 15 devices must operate under?
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A
Unlicensed devices must not cause harmful interference and must accept interference from other sources
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B
Unlicensed devices may transmit only on frequencies not occupied by licensed services
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C
Unlicensed devices must register with the FCC before operation above 100 mW
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D
Unlicensed devices are protected from interference if operating at or below 1 W EIRP