Multiple radios from one radio brand can be used to communicate with each other. These things need to be communicated together:- Radios should be in the same frequency band as each other (VHF,UHF, etc.). + VHF and UHF radios cannot communicate with one another. These radios use different frequency bands or ranges. VHF operates at frequencies between 30 and 300 MHz. MHz is the mega hertz. UHF uses frequency ranges between 300 MHz - 3 GHz (GHz stands for giga hertz).- Radios should be set to use the same frequency and tone codes for each channel.- Digital radios that transmit in digital must use the same protocol. These are the two-way radio digital protocols.+ DMR+ MOTOTRBO / DMR+ IDAS+ NXDNTo ensure that the radios work in conjunction, make sure to check with your dealer.