I am using modified CM108 sound fobs on my system.  I also use simpleusb and do not do DSP carrier detect.  One of them has COR that is active low and it works no problem.  The other one , the radio COR is only active high.  The active high is 5V. In the simpleusb.conf I have it set for carrierfrom=usb but it doesn't work.  Does the active COR voltage need to be more than 5V?

Thanks

Jamey
WR4JW