It is directly written - either milliwats ot dbm radiation, then max antenna gain to not discount.
note mW can be amplified with high gain antenna in some places
Written where, the EEPROM? I could always add debugging code to the ath9k driver and recompile, but I've been so damn busy lately, same reason for not going through heaps of kernel code to figure the format of the data in the ART partition.
But even if I've that data decoded, it will still be a mystery as to why it allows for a higher power operation under US.
Has greatly improved my 5 ghz range (about doubled it).
Leaving this here, since that thread is getting buried again.
The same area of the next room that was giving 20-30 Mbps, is now giving 100-200 Mbps on a single antenna phone.