Hi,

The AR9285 by default:

* TXes on Main only;
* Can RX on both, with the LNA mixing you've described;
* Can do RX fast antenna diversity.

If for some reason the card vendor has glued an external antenna
switch to the AR9285, it'll support TX diversity as well.

So you can't just unplug the main antenna and continue TX'ing.

Also, the LNA1/LNA2 mixing is implemented in ath9k but only enabled
for boards that support it - and then, only for STA mode. Grep the
source for LNA1. :-)


Adrian
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