Ok, I've got a problem with the audio coming into the usb adapter. I've made the circuit according to the schematic not the picture. I was testing it hooked up to a windows computer and I could play a sound clip I recorded and it transmitted the audio. But when I was trying to receive audio from another radio while recording in sound recorder I got nothing. The audio is coming out of the accessory connector (RX Audio Pin 11) on a Motorola Radius M208, could it be that the audio level is too low? Jeff WQEX694 KB1SPH