Well, eliminating the network switch seemed to dramatically improve our voter system issue. The host didn't randomly get lost, in turn making the RTCM go offline for a second and come back online. I thought it solved the problem until the next day, I started to randomly hear the voter go offline again and come back on. It has been very difficult to be logged into the RTCM while the problem happens, but I think I got it once, and I am getting the old GPS time period elapsed message. So we are obviously getting an OK GPS data, I am not getting this error every minute, it happens anywhere from once every hour to once every day. Can someone explain why changing the data rate to 9600 baud is not working for us on any of the 4 GPS units, but it is fine for everyone else? Another thing I am confused about is firmware, So these GPS-18 serial units have a firmware in them? And if so, would upgrading/downgrading affect the data? I am assuming we are getting proper NMEA because I don't think an improper format would give us 99% operation. 73 Skyler KD0WHB