ALFA Network AWUS036NHA

Overview
1x1:1 SISO

The device identifies as an Atheros UB91C.
 * There may be multiple revisions of this device.

The Wi-Fi IC would appear to also vary between newer and older units.
 * Older devices likely use AR9271 (AR9271-AL1A).. while newer ones may
 * use AR9271L (AR9271L-AL3A). Both are pictured in the images below.
 * 'The L stands for "Low-Cost".', per Sujith on ath9k-devel if it's cheap per sujith it's also Low-power per our tests

The power amplifier IC used is a [[Skyworks] (SiGe) SE2576L / 2576L].
 * SE2576L Datasheet

The power amplifier connected as follows:
 * 67 - XPABIAS - (Analog Output) connected with EN(able) pin of external Power Amp.
 * 68 - PDET - (Analog Input) connected with DET ping of external Power Amp.

The LED on this device is blue.
 * The FCC ID would appear to only be printed on the label of newer units.

FCC test results
According to FCC test results, this adapter is ~5 times weaker (sure it's "weaker" just as "L" stands for "Low cost" details: https://github.com/qca/open-ath9k-htc-firmware/issues/82#issuecomment-252649735)
 * Radiated power (with antenna): 90 dBuV/m peak (802.11b AVG of CH1,CH11)
 * Output power (before antenna): 10.41 dBm peak (802.11b CH6) (10.99mW)
 * than typical Wi-Fi adapters such as TP-LINK TL-WN722N. Although it's flagged high-power manufacturer never released driver to support high-power operation.

Links of Interest

 * Datasheet Drivers
 * Original drivers (mirror)

Reviews

 * On HACK|THIS blog

United States

 * On Rokland
 * On data-alliance

Europe

 * On wifi-gratuit.eu
 * On eurodk.com

operating range

 * 802.11g: 2.182-2.887 GHz