Cellular connectivity looks simple from the outside. You have a SIM, you have a device, you have a network. It either works or it does not.
In practice it is considerably more complicated than that. The signal arriving at your antenna port is shaped by dozens of variables – frequency band, cell load, building materials, interference sources, antenna design, cable quality, and the specific way your device negotiates with the network it is attached to. Understanding those variables is the difference between a deployment that works reliably and one that generates support calls.
This section covers the technical fundamentals of cellular connectivity in plain language – written for engineers, installers, and anyone responsible for making sure a connected device actually stays connected.
Reference Guides
RSSI, RSRP, RSRQ, SINR: What the Numbers Actually Tell You
The four signal metrics that appear on every LTE and 5G router status page – what each one actually measures, what the values mean, and how to read them together to diagnose a connectivity problem. Most people quote RSSI. Most problems require RSRP and SINR. This guide explains why.
Practical Guides
Before You Buy a Cellular Antenna, Do This First
The most common request I receive is some version of “my router is slow, I need an antenna to boost the signal.” Sometimes an antenna is exactly the right answer. Often it is not. This guide walks through a simple outdoor baseline test that will tell you which situation you are in – before you spend anything.
This section is being built out. Frequency bands, MIMO, cable loss, and cell selection behaviour are all in the pipeline.