I found that carrierfrom=usbinvert will sense the correct cor, but if I try turn ctcss off it starts keyed. After a couple restarts of asterisk the repeater will work once. These are the logs I have found. [Jan 27 21:21:16] WARNING[2225] chan_usbradio.c: Loaded parameters from usbradio_tune_usb.conf for device usb . [Jan 27 21:21:17] WARNING[2224] chan_usbradio.c: Possibly stuck USB read channel. [usb] [Jan 27 21:21:17] WARNING[2224] chan_usbradio.c: Nope, USB read channel [usb] wasn't stuck after all. Even when it works it will not send audio. Also when I try radio tune it will run through its tuning but not matter what tune command i run it always ends with adjust failed. Example radio tune rxnoise tune rxnoise maxtries=12, target=27000, tolerance=2750 tries=0, setting=2, meas=1 tries=1, setting=16, meas=1 tries=2, setting=16, meas=1 tries=3, setting=16, meas=1 tries=4, setting=16, meas=1 tries=5, setting=16, meas=1 tries=6, setting=16, meas=1 tries=7, setting=16, meas=1 tries=8, setting=16, meas=1 tries=9, setting=16, meas=1 tries=10, setting=16, meas=1 tries=11, setting=16, meas=1 DONE tries=12, setting=1000, meas=1, sqnoise=0 ERROR: RX INPUT ADJUST FAILED. Again I've disconnected everything buy cor/ptt/gnd and it will still starts keyed with ctcssfrom=no. -- Kris Kirkland ~ K5KRK Network Engineer