What did the black hole say to the pulsar?

I don't think you understand the gravity of your situation

Stellar objects and radio waves?

I always wondered, when hearing stellar bodies like pulsars, quasars and black holes emit radio waves, the following:

1) Are these waves akin to AM/FM/VHF/UHF type signals in that they transmit signals and sound?
2) If not, are these "waves" just variations in the redshift of hydrogen?
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