I have tryed for a long time (at least 2 full days ) to get the COP 48 function to work with no success... this would be very usefull to be used to send tones to open a link on the old dtmf controlled Quebec vhf net consisting of many repeaters linked in the Province of Quebec , from an Asterisk point of connection.. Does somebody had success with that command , if so , please help me , I would greatly appreciate. Also , does the gpio pins are supposed to be functionnal with usb devices in usb.conf ? This too is not working in my nodes... I know I have to learn a lot on app-rpt , I already operate 6 nodes all linked with Ubiquiti radios on 2365 mhz amateur band in Canada ; everything wented good but these 2 issues , up to date...