... Diversity Receiver:Four channel Receiver for best receptionFour groups frequencies can be offeredAutomatic Antenna SwitchingBlack and yellow shell color optionalTriple, ... 4 5.8G Four Channel Diversity Receiver:Four groups frequencies can be offered(3rd groups as default):CH1: 5865MHz CH2: ... , RX4 for RF4, with different position of the number 1, 2, 3 names different channels from CH1 to CH8.Operation ...