I have a Quectel EP06-A that will not keep up carrier aggregation on a second band. It is locked on Band 4 all the time but only intermittently aggregates Band 12. More often than not, it doesn't. Band 12 comes in just as well as Band 4 from the same tower, and the connection seems solid enough (see below). I'm not sure what's going on. Is it my modem/setup or maybe the tower? If it's on my end, is there anything I can tweak? (I've looked around but have not seen anything on point--hence posting here.)
Setup:
- Modem -> USB enclosure -> RaspberryPi 3b+ running ROOter
- Proxicast omni-directional paddle antennas
- T-Mobile unlimited plan of some kind
- ~2 miles near LOS to the tower (a few bushy tree branches from a single tree a few yards from the house)
Average connection stats:
- CSQ: 25-27
- Signal Strength: 80-87%
- RSSI: -59-63 dBm
- RSRQ: -7-8 dB
- RSRP: -88 dBm
- Speed is generally around 20 Mbps in both directions, somethings up to 30 Mbps down briefly
Any ideas?
