In general:

• VHF (Very High Frequency): Approximately 30 MHz to 300 MHz
• UHF (Ultra High Frequency): Approximately 300 MHz to 3 GHz

Specifics:

• North America (FCC):
  • VHF: 54-72 MHz (channels 2-4), 76-88 MHz (channels 5-6), 174-216 MHz (channels 7-13)
  • UHF: 470-608 MHz (channels 14-36) (Note: The FCC has reallocated some of the UHF spectrum for other uses.)

Due to the transition to digital television (DTV), many countries have reallocated portions of the TV broadcasting spectrum for other services, such as mobile broadband.

For more detailed information, you can consult the following resource:

• FCC (Federal Communications Commission)