User's Manual

Information in this document is subject to change without prior notice. Page 2 of 13
1. Introduction
The GWF-4M02 is a WLAN module supporting IEEE 802.11a/b/g/n standards with 7-pin or 4-pin
connector supporting USB2.0 interface. This is a small form factor and low cost compact WLAN module
designed for the wireless connectivity. This module operates in 2.4GHz and 5GHz dual band frequency ,
it applies a highly integrated MAC/BBP and RF/PA/LNA single chip RT5572 with 300Mbps PHY rate
supporting. It fully complies with IEEE802.11n draft 3.0 and IEEE802.11a/b/g feature.
2. Features
 20MHz/40MHz bandwidth, support 2T2R mode in 2.4GHz and 5GHz .
 802.11a: 6, 9, 12, 24, 36, 48, 54Mbps; 802.11b: 1, 2, 5.5, 11Mbps; 802.11g: 6, 9, 12, 24, 36, 48,
54Mbps ; 802.11n: Support PHY rate up to 300Mbps.
 Support Soft-AP; QoS-WMM, WMM-PS; WiFi Direct;
 WPS pin, LED indicates WiFi link & activity;
 Multiple BSSID support; Power management.
3. Product Information
3.1 Specification (Typical Value):
Main Chipset
Ralink RT5572N
Operation Frequency
2412~2483.5MHz,4.915~5.825GHz (
Different country adopts different frequency)
Protocols
802.11b: CCK, QPSK, BPSK, 802.11a/g/n: OFDM
Antennas
Two outputs to two dual band external antennas
Security
WEP 64/128, WPA/WPA2/WAPI, TKIP/AES; WPS/WPS2:PIN,PBC
Typical Transmit
Power
(Antenna feed point)
802.11b (CCK) 11Mbps: 17+/-1dBm
802.11g (OFDM) 54Mbps: 15+/-1dBm
802.11a (OFDM) 54Mbps: 11+/-1.5dBm
802.11n (HT20@MCS7), 13+/-1dBm; (HT40@MCS7),12+/-1dBm
Receive Sensitivity
(Antenna feed point)
802.11b: -88+/-1dBm; 802.11g: -73+/-1dBm
802.11n (HT20), -71+/-1dBm; 802.11n (HT40), -68+/-1dBm
802.11a: -70+/-1dBm