HI all, Wondering if anyone may have experienced a similar problem. My simplex node operating duplex=1 (w/telemetry) will unkey and transmit in the middle of entering dtmf tones to it. For example as I'm enter *3node it will unkey at the star or sometimes at the 3 and sometimes at the end of the string at the last number and then sometimes it will work. Also, there are times I can be talking on the node and right in the middle of my transmission it will drop then come back when it goes back to receive. This has been baffling me for sometime. Setup: Desktop computer DMK URI Icom f6011 mobile Thanks Wayne Kh6mei --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com