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Radio Frequencies and Radio Frequency Bands

CB Radios do not communicate with VHF Radios.

CB Radios do not communicate with UHF Radios.

CB Radios do not communicate with FRS/GMRS (Walkie Talkies).

Even if you are on Channel 1 on your CB and Channel 1 on your VHF radio, Channel 1 for each unit will be operating on a completely different frequency!

The reason is because they operate on different frequency bands.

Check out this article that explain the different radio frequencies and their uses: