I have N2x0 radios and I have installed the GPSDO in several of them. Sometimes I want use the external reference and sometimes I want to use the GPS reference. Do I have to open them up and move the jumper when I want to switch or does it still honor the software command? There are also times when I want the 1 PPS to come from the GPSDO and the 10 MHz to come from an external source. Is this doable? Thanks, Frank