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9 kHz - 150 kHz : <6.5 dB至<0.5 dB(與頻率對數線性增加)
150 kHz - 30 MHz : <0.5 dB
9 kHz - 150 kHz : > 10 dB 至 > 60 dB (與頻率對數線性增加)
150 kHz - 30 MHz : > 60 dB
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