The CW 9000 is a UHF multi channel radio microphone system using phase locked loop (PLL) synthesised channels for precise and stable transmission / receiving frequencies. UHF Multi Channel Radio Microphone System using phase locked loop (PLL) synthesised channels for precise and stable transmission / receiving frequencies. System comprises of 1 x CW9001T belt transmitter, 1 x CW9000T hand held radio microphone, 1 x CW9000R receiver.