Hi Thank you so much. You made my day! The command works. Im looking forward to test it out :-) I also have two of these card. they don’t have the same bitmap, but I assume they work the same way? qca9882 chipset with 2 chains available using ath10k driver: Available Antennas: TX 0x3 RX 0x3 Configured Antennas: TX 0x3 RX 0x3 qca9880 chipset with 3 chains available using ath10k driver: Available Antennas: TX 0x3 RX 0x3 Configured Antennas: TX 0x3 RX 0x3 Best Regards, Håvard > On 18 Aug 2017, at 09:00, Matthias May <matthias.may@xxxxxxxxxxx> wrote: > > On 18/08/17 01:32, Håvard Rabbe wrote: >> Hi >> I’m using wifi card with AR9280 chipset that uses the ath9k driver. >> >> The card has 2 available radio chains and I’m only going to connect 1 antenna. >> >> Is it possible to disable the radio chain im not using? >> >> >> Best Regards, >> >> Håvard Rabbe >> > > Help text from iw: > phy <phyname> set antenna <bitmap> | all | <tx bitmap> <rx bitmap> > > You can set the rx/tx mask with > iw phy phy0 set antenna 1 > to not use the second chain > > or > iw phy phy0 set antenna 1 3 > to not use the second chain for tx, but still use it for rx. > > You can see the currently active mask with: > iw list | grep Antenna > > Be aware that the value set here is a bitmask only allows the values 1/3/7 (for 1, 2 and 3 chains). > Chain 0 is always active. > --> You can not disable chain 0 and only use chain 1. > > BR > Matthias
