PPRuNe Forums - View Single Post - Malaysian Airlines MH370 contact lost

9th Mar 2014, 21:03

#1018 (permalink)

mm43

Join Date: Jun 2009

Location: NNW of Antipodes

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Quote:

I just looked up 40kHz in the Radio Regs, it is allocated to fixed maritime mobile

Please don't confuse the radio spectrum with the audio spectrum. In the context of the pingers, the frequency of 40kHz is ultra-sound.