Greetings, A few guys have been trying to help me but thought I would post to see if I get something different. No one can answer this problem. I can not adjust the setting on my fob with simpleusb-tune-menu here is simpleusb.conf [usb27539] hdwtype=0 rxboost=0 txboost=0 carrierfrom=usbinvert ctcssfrom=no txmixa=no txmixb=no invertptt=0 duplex=1 rxondelay=0 eeprom=0 here is simpleusb_tune_usb27539.conf [usb27539] ; name=usb27539 ; devicenum=1 devstr=4-2 rxmixerset=200 txmixaset=0 txmixbset=0 notice everything on the tx side is set to 0. I still get audio. If I put it on 999 it still sounds the same. I can also try and change the rx audio and it does move either. If I change to usbradio, it is opposite. I can not get any audio to go in or out. But cos and ptt works. Any ideas? Ryan