Intermittent Service t-Mobile 5G

OK so you are in Mesa AZ. Sounds nice and hot. 🙂 If you just received your T-Mo Gateway I will assume you have the Arcadyan. (rounded corners, not a cylinder) If the web interface provides the info now for the PCI values for the 4G and 5G signals use the PCI value to find the tower(s) that source your signals. Look at and record the cellular metrics and determine the signal strength and quality. If you can put the GW in a location so it gets a stronger, cleaner signal that might help. If T-Mobile engineers are working on the equipment for the towers in the area then the disruptions can be tower related not router related. Some users have complained about heat issues and found if the gateway gets too warm it tends to have such behavior as signal integrity issues. 

If the signal source is West and based upon you saying, "we have "5G Ultra Capacity"." that tells me it is an n41 signal. You need to determine how far it is to the tower and know your cellular metrics. The n41 is a millimeter wavelength so it does not travel as far as the longer n71 but is faster for downloads. The functional distance for really good speeds might range out to 2.5 miles but 3 miles is pushing the edge of the signal for the performance you really want. If the signal is strong and has good quality with the SINR in the good to excellent range then you can expect some nice speeds. Keep in mind those buttes may cause reflected signals so improving the SINR would be important. The actual direction the signal comes in might be surprising as a reflected signal might what your gateway is seeing vs a direct signal. Cellular communication has lots of things that can influence the signal so I would say dont assume anything. Investigate what is going on and experiment a bit to get a strong clean, signal.

Below is a chart that explains the cellular metrics. This plus 100% location of the tower, if possible, via using cellmapper.net can help know and improve the signal to the gateway.

I dont have the Arcadyan gateway. I have the Nokia GW so getting the PCI values with the Nokia is simple and direct. I don't know if the latest firmware for the Arcadyan reports the PCI values via the web interface via 192.168.12.1. I believe the mobile application does report the PCI values for the signals. The PCI is the physical cell identifier. Very useful info. 

If not the link below from Nater Tater’s YouTube videos on the Arcadyan does provide cellular information.

http://192.168.12.1/TMI/v1/gateway?get=all

Hopefully this will help you get the signal more stable. If not then find out if T-Mobile monkeys are on the tower messing with the cables and gear.