I don't understand something, and before I file this as a bug report on Mantis, I want to make sure that it is. My current setup consists of a DMK URI, and an Icom UHF commercial radio running simplex. I have this parameter set in usbradio.conf: duplex=0 If I set duplex=1, it will continually kerchunk. If I set it back to duplex=0, when the radio receives a signal, it will transmit. Only by adding this to my node stanza in rpt.conf will it behave as expected: duplex=1 Either I'm not understanding how this works, or I don't have something configured or implemented correctly, or it's a bug? tnx Stephen K1LNX -- ********************************** Stephen Brown - ARS K1LNX Johnson City, TN EM86 http://www.k1lnx.net google voice: 423-665-9367 **********************************