Its simply cause the app_rpt app will detect the cos by dsp and the same will be done for any ctcss tone you want. That if you use USBRADIO If you use SIMPLEUSB you will need to to provide COS and ctcss if you want ctcss. -----Message d'origine----- From: Mike Sent: Wednesday, April 10, 2013 5:05 PM To: app_rpt-users@ohnosec.org Subject: [App_rpt-users] GM300 Cable pinout question I have decided to build an allstar node. Got the radio, got the account, got the URI, got the Linux box, got the software, now I have to build the cable and put it all together. But in looking at the cable description on the DMKeng site, I don't see any COS signal used. http://www.dmkeng.com/images/9080-GM300.pdf Isn't the COS from the radio needed to suppress transmitting dead autio over the network? I thought a COS signal was required. It's talked about as necessary but the signal isn't shown in the gm300 cable description. Anyone care to explain why this is not needed or when it is needed? And if it is needed, which pin on the 25 connector would it go to? Mike _______________________________________________ App_rpt-users mailing list App_rpt-users@ohnosec.org http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users