The power supply replacement has not worked for my issue with the RF dropping. I am still having to reset the RFM2Pi on a daily basis. I have not enclosed the devices yet, and I will be testing out the serial connection in the coming week.
Vicbitter57, are you saying that your network connection is dropping (wi-fi) or that the RF connection is dropping (data from emonTX)? There would be different troubleshooting paths depending on which.