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Re:Turn Raspberry Pi’s GPIO into an FM Transmitter by Joel_Mckay on Saturday November 12, 2022 @02:29PM (#33576214)
If I recall, license free 88.7MHz under 15mW transmitters for FM audio were very common in some zones.
Re:Turn Raspberry Pi’s GPIO into an FM Transmitter by fest on Saturday November 12, 2022 @04:03PM (#33577049)
I believe the EU limit is 50nW (at least it is in the EU country I live).