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:
