Platform
Cross-Platform
Description
New LongModTurbo Radio Preset:
- Bandwidth = 500 kHz
- Spread Factor = 11
- Coding Rate = 8
- Frequency = 902.6875 MHz (or close to 902 as possible)
As various meshes are moving to different presets do distance themselves from saturated default LongFast traffic the 2 logical directions are MediumSlow (faster but lower SF) and LongModerate (more reliable but slower and increased airtime).
I’m proposing that those regions with the option have a new preset to choose from to leverage 500kHz bandwidth. I’m nicknaming it LongModTurbo because it’s essentially Long Range / Moderate settings with the bandwidth cranked up but call it whatever 🤣
Since 500kHz is only limited to certain regions, make the preset only available depending on set region.
While people can override presets, this makes it a lot simpler for less savvy folk to change mesh radio settings and join a new mesh. The setting proposed offer the following benefits:
- 33% increase in speed over LongFast reducing airtime.
- Same spread factor of LongFast/LongModerate for larger geographically spread-out meshes.
- Higher Coding Rate for longer/noisier links
- this speed has the option to be a 100% (double) increase (over default LongFast) if variable CR is introduced letting people start with higher reliability, and increasing speed if needed.
- A frequency that is far from the noisy 915mHz centre, but close enough to 906.875 that antennas tuned for LongFast won’t suffer a big hit.
- From limited testing, a side benefit seems to be reduced hops, as the more resilient paths means smart flooding isn’t forced to take less efficient routes
- A way to move from LongFast without making any sacrifices (with the exception of a slightly reduce Link Budget)
EDIT:
Since the default Frequency is calculated using the hash of the name, I propose the following.
Preset Name = ModFast
Calculated Frequency = 902.375
Frequency Slot = 3
Created an online calculator using the Meshtastic algorithm for hashing the preset name to frequency and channel slot:
https://meshradiocalc.yycmesh.com/
Platform
Cross-Platform
Description
New LongModTurbo Radio Preset:
As various meshes are moving to different presets do distance themselves from saturated default LongFast traffic the 2 logical directions are MediumSlow (faster but lower SF) and LongModerate (more reliable but slower and increased airtime).
I’m proposing that those regions with the option have a new preset to choose from to leverage 500kHz bandwidth. I’m nicknaming it LongModTurbo because it’s essentially Long Range / Moderate settings with the bandwidth cranked up but call it whatever 🤣
Since 500kHz is only limited to certain regions, make the preset only available depending on set region.
While people can override presets, this makes it a lot simpler for less savvy folk to change mesh radio settings and join a new mesh. The setting proposed offer the following benefits:
EDIT:
Since the default Frequency is calculated using the hash of the name, I propose the following.
Preset Name = ModFast
Calculated Frequency = 902.375
Frequency Slot = 3
Created an online calculator using the Meshtastic algorithm for hashing the preset name to frequency and channel slot:
https://meshradiocalc.yycmesh.com/