Mid Testing
Sydney is currently split into two distinct radio settings.
- Narrow: This is primarily used in the Northeast Sydney and Newcastle
- Wide: This is used in Western Sydney, Southwest Sydney, and the Blue Mountains.
There is a new setting that is being tested by several people dubbed "Mid".
| Setting | Mid |
|---|---|
| Frequency (MHz) | 915.075 |
| Bandwidth (kHz) | 125.0 |
| Spreading Factor | 9 |
| Coding Rate | 5 |
Problems that are trying to be solved:
- Sit at the bottom of the AU ISM Band and avoid conflicts with LoRaWAN gear (which starts at 915.200 MHz).
- More speed benefits closer to Narrow; by increasing the Bandwidth
- Distance benefits of Wide; Western Sydney has a sparse node distribution with long distance links.
- Find common settings that the whole Sydney Mesh can agree upon to resolve the Wide/Narrow split.
Testing
If you want to temporarily test these settings on a router:
tempradio 915.075,125,9,5,120
This changes a repeater to the mid settings for 120 mins. It will revert to the previously configured settings after 2 hours or if the repeater is rebooted.