900ux Radio Documentation

Links

There are two options to configure the radio. I will use AT&M commands over a terminal, because I do not have ready access to a Windows laptop.

See the Sofware Manual link for more documentation.

Connect to the Radio

i. Determine the device COM port

List all active connections:
```
cat /dev/* | grep COM
```
If it is not obvious, try unplugging the modem, running the command, then plugging it back in and rerunning it. There should be a new device, which is the modem.

ii. Connect Over Serial

Default Configuration Settings:

57600 baud rate, no parity, 8 data bits, 1 stop bit
```
screen /dev/<device_name> 57600
```
Configure Using AT&M

i. Type +++ to enter AT mode

ii. Type ATI to list the current firmware version. Ensure it is up to date.

iii. Type ATS3? - This will display the currently set up network ID. It defaults to 25.

iv. Type ATS3=10 - This will set the network ID to 10. By using a non-standard value, we reduce the risk of interference if another team is also using this type of radio.

v. Type AT&W to write the current parameters to EEPROM

vi. Type ATO to exit AT mode
Ensure Parameters Have Been Implemented

i. Repeat the above steps for the other modem(s)-- they must all have the same network ID to function correctly
Test Connection