The TBeam uses the HPD13A module which from Aliexpress has these specs.
Those antennas that come with the modules I’d assume are unlikely to be more than 2dBi. A good ULF to SMA pigtail would be about -1dBi.
So I would use:
- Antenna gain - 2
- TX line loss - 1
- RX line loss - 1
- TX Power - 0.1
- Rx threshold - 0.035 (if using slowest, long range setting)
Its an amazingly good tool and fun to see what the potential of a mesh could be!