I will actually have up to 24 arrays for gps, 24 arrays for glonass, and 16 for galileo eventually, as its a 32 channel reciever. There will also be a few other data arrays to send regarding the antenna location and elevation.
Most messages need to be sent every 1 second. Others only every half hour or hour.
Which leads me back to needing external ram I think. How do you access it? Are there any examples out there? I have not found any easily available. I did find a post in the forum that never recieved any answers about external ram.