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ManufacturerExternal linkhttp://www.senao.com
ModelSenao NL/SL-2511CD PLUS EXT2 (200mW, 2 MMCX)
External Antenna Jack 2 off
Chipset External linkIntersilPrism2
Power 200mw (100mw is also available)
Recieve Sensitivity 1 Mbps @ -96
2 Mbps @ -93
5.5 Mbps @ -91
11 Mbps @ -89
Drivers URL see below
Available New Yes
Average Price $120
Vitals last updatedjuly 2004

Manufacturer Sales Pitch

Long Range Wireless PC Card with Two Antenna Jacks for Embedded System

Model no. NL-2511CD PLUS EXT2

Feature Benefit
Up 23 dBm transmit output power Long operating range
up to three times range of standard products

(Depends on different countries)
Compliant IEEE802.11b compliant
Automatic data rate scaling at 11, 5.5, 2 and 1 Mbps Optimized throughput, range and connectivity
Improved 64/128-bit WEP Engine Significantly improved throughput
Wide coverage range up to 1200 meters in open space Wireless connectivity for all your computers
Advanced Power Management Extended battery life
Plug and PlayEasy installation
Significantly improved indoor multi-path distortion Higher link quality in indoor environment


Radio Data Rate 11, 5.5, 2 and 1 Mbps, Auto Fall-Back
Range (open environment)11 Mbps 300m/450m ( 23 dBm output power)
5.5 Mbps 400m/600m ( 23 dBm output power)
2 Mbps 500m/750m ( 23 dBm output power)
1 Mbps 800m/1200m ( 23 dBm output power)
Operating Voltage3.3V/5V
Regulation CertificationsFCC Part 15/UL, ETSI 300/328/CE
CompatibilityFully interoperable with IEEE802.11b compliant products
LED IndicatorRF Link activity


Network ArchitectureSupport ad-hoc, peer-to-peer networks and infrastructure communications to wired Ethernet networks via Access Point
Drivers Windows 98SE/ME/2000/XP (also Linux)
Access ProtocolCSMA/CA
RoamingIEEE802.11b compliant
Security64/128-bit WEP data encryption


Frequency Band 2.4 - 2.484 GHz
Radio TypeDirect Sequence Spread Spectrum (DSSS)
ModulationCCK (11, 5.5Mbps), DQPSK (2Mbps), DBPSK (1Mbps)
Operation Channels11 for North America
14 for Japan
13 for Europe
2 for Spain
4 for France
RF Output Power23dBm(200mW)- FCC
20dBm(100mW)- CE
AntennaTwo antenna connectors (MMCX)
Sensitivity @FER=0.0889dbm @11 Mbps
91dbm @5.5 Mbps
93dbm @2 Mbps
95dbm @1 Mbps


Temperature Range-10 C to 60 C - Operating
-40 C to 70 C - Storage
Humidity (non-condensing) 5% to 95% typical|


Form Factor PCMCIA Type II PC Card
Dimensions118(L) mm x 54(W) mm x 7.5(H) mm
Weight40 g

Updated: 05/21/2004

*All specifications are subject to change without notice.
Reformated from External link NL-2511CD-PLUS-EXT2.pdf


2511CD PLUS EXTernal Antenna

Operating Systems


Used with the External linkHostAP drivers the card will function as an accesspoint, in client(managed) mode, ad-hoc or RFMon (Monitor) mode.



Info about using with WinXP - needed!


Some more information - also needed!


Jun Sun's External linkMini-howto on Flashing Intersil Prism Chipsets - while centered around linux, it also has Dos and Windows references

Misc Notes

Further reading

External linkSeattle Wireless wiki entry

Main antenna

Hold the card with the PCMCIA connector part pointing to the right and the top of the card facing you (ie: the led light is visible).
The main antenna is the bottom connector.

Version 1 (current) modified Mon, 26 Jul 2021 12:49:29 +0000 by graybeard
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