From owner-freebsd-wireless@FreeBSD.ORG  Wed Oct 26 18:27:24 2011
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Date: Wed, 26 Oct 2011 22:27:19 +0400
From: Lev Serebryakov <lev@freebsd.org>
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Subject: AR9280: ar5416PerCalibrationN: NF calibration didn't finish;
	delaying CCA
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Hello, Freebsd-wireless.

  I've got pigtails from China at least (55 days of waiting, I love
Russian Post), and trying my new WiFi card:

ath0: <Atheros 9280> mem 0xa0060000-0xa006ffff irq 15 at device 17.0 on pci0
ath0: [HT] enabling HT modes
ath0: [HT] 2 RX streams; 2 TX streams
ath0: AR9280 mac 128.2 RF5133 phy 13.0

  Now I'm trying it in 802.11g mode, as here is no 802.11n clients.
  System is:

FreeBSD 9.0-RC1 FreeBSD 9.0-RC1 #0: Tue Oct 18 04:44:52 MSK 2011

  802.11g and signal strength seems to be same as with AR5413 based
card, but here are error on start:

ar5416PerCalibrationN: NF calibration didn't finish; delaying CCA

 Is it worth trying 802.11n without 802.11n clients?

--=20
// Black Lion AKA Lev Serebryakov <lev@serebryakov.spb.ru>