We bought a Compex WPJ 428 board + a SIMCom 8202G LTE/5GNR modem and we try to make it work on OpenWRT

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Quentin Dufour f6a5b9a582 Rework summary		2021-04-18 11:11:00 +02:00
3D_model	Init add 3D Model	2021-04-17 18:54:44 +02:00
doc	Add some doc	2021-04-17 19:54:17 +02:00
files	Add scripts + add antenna tests	2021-04-17 18:00:21 +02:00
img	Add pictures and a first report	2021-04-17 17:55:47 +02:00
reports	Add some doc	2021-04-17 19:54:17 +02:00
config	Work on router config	2021-03-24 12:14:26 +00:00
README.md	Rework summary	2021-04-18 11:11:00 +02:00

README.md

WPJ428 + SIMCOM 8202G

We try to build a NR5G router with OpenWRT as our main internet access point for our home. One specificity is that we need external antenna as on the ground there is no signal at all

Our project is currently made of the following physical parts:

A custom made case that is 3D printed - Download files
A Compex WPJ428 board - wi-cat.ru
A Simcom 8202G modema - official site
Some antennas, the setup is not definitive yet
- Log-Periodic Dipole Array (LPDA) Antenna - Directional antenna LTE 800/1800/2600 MHz, MIMO, SMA - wimo - diff between yagi and lpda
- A cheap cross antenna - amazon
- Some small wifi-like antenna - wimo, similar but different

We try to document our journey here:

Guides
Problems we encountered
- Wrong dimensions for the board
- Ethernet ports are not configured at boot
- The UDP+Don't Fragment bug
- Tracking the bandwidth bottleneck
- Some logs/data/info about our hardware
Misc
- Bibliography
- Some mostly useless hacks