Do the radios require an FCC license?

Yes. The RDX, RM, CLP, and CLS Series require an FCC license. The DTR and DLR do not. The cost is approximately $110 for a 10 year license plus and additional $220 for the application fee and frequency coordinator. It is a very easy process. License is per company, not location. All licensing information comes with the purchase of the radios to the end user.