in the above command:
If you disconnect your terminal, then netcat exits. The answer to that is the -d switch, but it is not supported in that version. Second option is to run screen. That way you can detach the screen session and the nc command stays running.
Last time when testing in the field, the base log file was saving properly on the base, and the data was coming through the RFD900+ radios, but ReachView was not accepting the input (no grey bars on the status page). Not sure why. More testing needed at this point.