My 6600M developed a connectivity issue over the weekend. Submitted a ticket Monday morning after hours (days?) of trying to fix it. I was really concerned my Ethernet port was hosed due to numerous thunderstorms over the weekend. Tim replied with a troubleshooting hint on my router/WiFi extender configuration. Sure enough he had sniffed it out just based on my detailed explanation of conditions. That lead to a call to AT&T to "fix" the router and all is well. The radio was not getting a new IP address from the router. It would boot up ok (sometimes) as a radio but dogparkSDR would not "see" it nor would the Maestro or iPhone. Thank you Tim for the quick and accurate assessment. He not only told me where to look but why. Just terrific support.