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Qualcomm 65-VF438-P2

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Qualcomm 65-VF438-P2
Availability: reference design

Manuf/OEM/ODM Askey

FCC approval date: 30 January 2008
Country of manuf.: China

Interface: USB

USB 2.0
Connector: Male A
Form factor tags: dongle

FCC ID: J9C-65VF438P2
Industry Canada ID: 2723A-65VF438P2

WI1 chip1: Qualcomm WFB4130

WI1 chip2: Qualcomm WFR4031

Probable Linux driver
agnx (non-functional)
(see also passys)

Antenna connector: none

abgn, 2x3:2

OUI: 00:0A:F5 (-, 5 W, 2007)

For a list of all currently documented Qualcomm chipsets with specifications, see Qualcomm.

802.11a/b/g/n USB Stick Adapter

Qualcomm 65-VF438-P2 (MC423D_H) - 802.11a/b/g/n USB Stick Adapter

"701-00232-00" is silkscreened on the board in the FCC photos.

The shell used by the device would seem to indictate Askey manufacture..

A MAC label w/ a 00:0A:F5 (Airgo) OUI is affixed to the device in the FCC photos.

It has been assigned to this entry for no reason.


• WFB4130 Single Chip integrated Baseband and MAC
• WFR4031 Single Chip 2.4/5 GHz 2Tx/3Rx transceiver

M device (alternate model US422D_H) uses Qualcomms WFB400 chipset

(the successor to Airgos AGN300 chipset). It was likely never publicly released.

Product Description[edit]

multi-radio WFB4130 Baseband/MAC IC and WFR4031 RF IC, an 802.11a/b/g/n wireless
LAN solution that sends and receives data at up to 300 Mbps.
  • Using Qualcomm’s advanced chipset with patented True MIMO smart antenna technology,
Qualcomm WFB400-based products provide unprecedented levels of 802.11a/b/g/n range
and throughput, previously unachievable speed and spectral-efficiency, full Wi-Fi product
interoperability for 802.11a/b/g/n global regulatory compliance.

Key Features and Benefits[edit]

  • The fourth generation, Qualcomm’s 802.11n True MIMO chipset, provides the implementer
of access points, home gateways, WLAN clients, consumer electronics and multimedia
entertainment, embedded wireless laptop/desktop with the following key features:
• 802.11a, 802.11b, 802.11g, 802.11n Network Standards
• MIMO link rates up to 300Mbps
• 2.4GHz/5GHz Frequency Band Operation
• Receive Combining and Transmit Diversity
• Dynamically adjusts between 20/40MHz operation on a frame by frame basis
• Interoperability with 802.11b/g, 802.11a/b/g , 802.11a/b/g/n
and 802.11n Draft 1.0 and 2.0 products, 802.11d support
• 802.11b Long/Short Preamble support on a frame-by-frame basis
• Transmit rate based power control

Additional information, per the FCC 'manual'[edit]

Typical Receiver Sensitivity w/ 11b rates (PER = 0.08) (more)

  • -101 dBm @ 1M
  • -98 dBm @ 2M
  • Using "RxSens_11b_5.5M" as property chain is not permitted during the annotation process.
    @ 5.5M
  • -93 dBm @ 11M

Typical Receiver Sensitivity w/ 11g rates (PER = 0.10) (more)

  • -99.5 dBm @ 6M (BPSK)
  • -98 dBm @ 9M (BPSK)
  • -96.5 dBm @ 12M (QPSK)
  • -94 dBm @ 18M (QPSK)
  • -92 dBm @ 24M (16-QAM)
  • -89.5 dBm @ 36M (16-QAM)
  • -86.5 dBm @ 48M (64-QAM)
  • -84 dBm @ 54M (64-QAM)

Typical Receiver Sensitivity w/ 11a rates (PER = 0.10) (more)

  • -95.5 dBm @ 6M (BPSK)
  • -94 dBm @ 9M (BPSK)
  • -92.5 dBm @ 12M (QPSK)
  • -90 dBm @ 18M (QPSK)
  • -88 dBm @ 24M (16-QAM)
  • -85.5 dBm @ 36M (16-QAM)
  • -82.5 dBm @ 48M (64-QAM)
  • -80 dBm @ 54M (64-QAM)