The RF-Video VRX-49 MIL is a 4.9 GHz Audio/Video Receiver designed for military and government use. This receiver can access eight channels which cover the entire frequency range of the 4.9 GHz band. Both NTSC and PAL video standards are supported by this unit. For power, it will accept 9 to 12V from a power supply or battery. Different antennas can be attached via the single SMA connector depending on use case; high-gain antennas are recommended.