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  • Tyas Kokasih thinks this is interesting:

Clearly, when the names were assigned nobody expected to go above 10 MHz, so the higher bands were later named the Very, Ultra, Super, Extremely, and Tremendously High Frequency bands. Beyond that there are no names, but Incredibly, Astonishingly, and Prodigiously High Frequency (IHF, AHF, and PHF) would sound nice.

From

Cover of Computer Networks, Fifth Edition

Note

Incredibly, Astonishingly, and Prodigiously High Frequency >,<