long range mode modulation

[romanlh]

I connected simple power metter to ESP32 devkit and found that peak level in Long Range mode is twice smaller then in 802.11b mode.
Why? Does LR mode use multiple subcarriers and thus have to lower peak level? Any details on LR mode modulation?

Sensor: http://www.herbert-dingfelder.de/?page_id=68

802.11b mode:

AKIP0022.jpg (74.48 KiB) Viewed 2206 times

LR mode:

AKIP0019.jpg (77.83 KiB) Viewed 2206 times

(ignore smaller pulses, it is response from another module intentionally placed in proximity).