Yeah man. It requires some modifications to the radio to do it the right way. There is an easier way to do it too. I used to run and AudioTech AT2020 into a galaxy 959. I used a behringer 1202 xyenx mixer, a 32 band eq and a compressor/expander. In order to get the audio in to the radio, I took an old mic and opened it up. I cut the red and black wires from the mic element and connected them to the audio output on the board. This allowed me to use the old mic as a keying circuit and a place to inject the audio. I'm not well versed enough to inject the audio directly in to the circuit in the radio so it wasn't as good as it could have been but it still worked pretty well.