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It is good to know how wifi developed and understand its history. The telecoms regulator, Federal Communications Commission (FCC) decide to free some of the wireless spectrum namely 900 Mhz, 2.4 GHz and 5.8 GHz in 1985. These were called garbage bands. The authorities also ruled that the wireless devices should not interfere with one another. Lots of devices make use of these so called garbage bands from cordless phones to microwave ovens. The problem was the proprietary hardware produced by individual companies could not work with one another. A new market could be created if a standard existed. The industry was inspired by the success of ethernet. All the parties took a long time to agreed on the standard as consensus had to be reached with at least 75% of the members. Finally, only in 1997 was the specification agreed upon. The interference problem was solved by the use of spread spectrum technology. There are two types . One in which the radio signal jumped between the the radio frequencies and the other in which the radio signal was spread out in the wide range of frequencies. This technology began in the military and not only does it prevent interference it also prevents interception.
The first tech company to adopt this technology was Apple and its iBook incorporated wifi slot in July 1999. Apple branded the wireless technology as AirPort. It was immensely successful and other companies follow suit. Another development which trigger the explosive growth was the introduction of broadband technology into homes. Everyone in the family could share the broadband access. The only problem lay in the networking of all the separate devices. Wifi cut through this problem by doing away with installation and extension of cable points and hacking of walls.
Now even cities are thinking of implementing wifi hot spots. Philadelphia and Amsterdam are turning themselves into one giant hotspot. The city areas are about 220 square kilometres. Consumers will get cheap wireless internet access anywhere in the city.New applications like Wifi phones which exploit this wireless technology will bound to send shivers down the cellular phone operators. There are still constraints like the limited distances , power consumption and security concerns. A new technology in the works WiMax is designed to have data transfer speed of 70 megabits per second and its coverage is 50 km instead of the current 50 m for Wifi. So look forward to the future, where making a wireless call will be much much cheaper.
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Netgear 4-Port Wireless 802.11b/g Router,54 Mbps maximum data transfer rate (Refurbish) Features/Specifications: Netgear WGR614 Wireless 802.11g Router General Features: 4-port wireless router 54 Mbps maximum data transfer rate Web based device management DHCP server and client device management 64/128-bit WEP encryption Up to 328-feet range (indoors) Standards: IEEE 802.11g IEEE 802.11b Front Panel Features: Power LED indicator WAN LED indicator LAN (10/100) LED indicator WLAN LED indicator Rear Panel Features: Four (4) RJ-45 LAN ports One (1) RJ-45 WAN port Reset button DC input Regulatory Approvals: FCC CE Package Includes: Netgear WGR614NAR broadband router RJ-45 standard Ethernet cable AC adapter (120v ~ 60Hz) Additional Information: Product Requirements: Broadband Internet connection Computers with NIC or Wireless adapter Available power outlet Notes: Color may vary Driver CD NOT included, see link below Informational Links: Manual/Driver link from here Note: Refurbished item with 30 days warranty
Standards IEEE802.11b/IEEE802.3/IEEE802.1d Data Rate 1Mbps, 2Mbps, 5.5Mbps, 11Mbp Frequency Band 2.400GHz ~ 2.483GHz DSSS(Direct Sequence Spread Spectrum) Encryption WEP (wire equivalent privacy) algorithm (WEP-64bit,128bit) Modulation method DQPSK/DBPSK/CCK Operation mode Access Point Roaming Among Access points on the same subnet Management SNMP Power consumption Transmit700mA Max.(5VDC) Receive580mA Max.(5VDC) Regulation RadioEU ETS300 328 ; USAFCC part 15 EMCEU ETS300 826 ; USAFCC part 16 SafetyEN60950 Ports One 10Mbps RJ-45 port Power 5W, 5VDC Adaper Antenna External diversity LED indicators GreenPower ; YellowRF/Link GreenEthernet/Link Coverage Area Indoor:30 100 meters Outdoor:200-250 meters (Above distance varies with data rate at different usage environments) Temperature Operating 0~55 ; Storage 20 ~ 65 Humid=1095ity 5-95% Non-condensing (max) Dimension 155(W) x 192(L) x 31 (H) mm Weight 310g
Wireless LAN Access Point Support IEEE 802.11b Features: Multiple user sharing the Internet line IP routing and NAY/PAT support Supports PPPoE/PPTP client function for xDSL connection DMZ redirects WAN port's Public IP address to LAN's Private IP address Address Mapping Virtual Servers Brid=1095ge Mode TCP/IP, UDP, ICMP, PPPoE, PPTP, NAT/PAT, DHCP(Client/Server) Natural firewall (NAT), private IP addresses not accessible from Internet IP Packet Access Control Hacker Attack Prevention (DoS) PAP/CHAP/MS-CHAP authentication VPN/PPTP Client VPN/PPTP/IPSec pass through DHCP Client Log Security Log Device/Connection Status Web-based Management Remote Management WLAN 1 RP-SMA Antenna LAN Ports 410/100 Base-T port WAN port 110/100 Base-T port for ADSL or Cable modem LED Indicators System WAN per port LAN per port WLAN per port Power1 LNK/ACK*1 LNK/ACK*4 ACK*1 Input Power 12V, DC1A Physical Dimension 187mm x 30mm x 100mm(W * H * L) Registration FCC, CE
802.11g Wireless LAN PCI Adapter, FREE STANDARD SHIPPING General Features: 32-bit PCI interface 802.11g standards 54 Mbps data transfer rate Supports WPA-PSK External antenna 64/128-bit WEP encryption Link LEDs Plug and Play Modulation: QPSK/BPSK/CCK/OFDM Data Rate: 1/2/5.5/6/9/11/12/18/24/36/48/54 Mbps Frequency Band: 2.400 to 2.4835 GHz frequency Channels: 1 - 11 Channels (US, Canada, China) 1 - 13 Channels (Europe, Taiwan) 1 - 14 Channels (Japan) Regulatory Approvals: FCC CE
Netgear WG111 802.11g 54Mbps Wireless WiFi USB 2.0 Adapter, FREE STANDARD SHIPPING Features/Specifications: WG111v2 54 Mbps Wireless USB 2.0 Adapter General Features: Silver design USB 2.0 interface Activity LED Self-powered Light, compact casing Wireless Speeds: 1, 2, 5.5, 6, 9, 11, 12, 18, 24, 36, 48, and 54 Mbps (auto rate capable) Compatible with 802.11b or 802.11g Modulation Type: 802.11b: Direct Sequence Spread Spectrum (CCK, DQPSK, DBPSK) 802.11g: Orthogonal Frequency Division Multiplexing (64QAM, 16QAM, QPSK, BPSK) Frequency: 2.412 ~ 2.462 GHz (US) 2.412 ~ 2.484 GHz (Japan) 2.412 ~ 2.472 GHz (Europe ETSI) 2.457 ~ 2.462 GHz (Spain) 2.457 ~ 2.472 GHz (France) Encryption: Hardware-based 40/64-bit 128-bit WEP Dimensions: 3.72 x 1.19 x 0.6-inches (L x W x H) Regulatory Approvals: FCC CE C-Tick Link to download the driver and installation guid=1095e on netgear.com Note: Refurbished item with 30 days warranty
Linksys 11b Adapter Driver for Download This Linksys WUSB11 Wireless USB Network Adapter allows you to share data, printers, or high speed Internet access over your existing wireless network! This 802.11b compliant adapter operates at 2.4 GHz frequency and features up to 11 Mbps data transfer rates. Comes with a free 6' USB cabl(193-070). It connects directly to any USB ready PC.Just plug it in and you're ready for instant wireless connection! One year Manufacturer Warranty. General Features: USB 1.1 interface 802.11b standards 11 Mbps data rates 2.4 GHz frequency 64/128-bit WEP encryption Antenna Plug and Play Power/Link LEDs Channels: 11 channels (US, Canada) 13 channels (Europe) 14 channels (Japan) Range: Indoors: up to 300 feet Outdoor: up to 1500 feet Unit Dimensions: 0.9 x 3.58 x 2.8-inches (H x W x D) Regulatory Approvals: FCC Package Includes: Linksys WUSB11 802.11b Wireless-B USB Adapter USB cable Product Requirements: 200 MHz processor or higher Windows 98SE/ME/2000/XP 64 MB RAM Available USB port Wireless Access point
Your Pocket PC can be free from the tangle of wires Meritline WCFM-100 Wireless 802.11g 54Mbps CF card lets your PDA devices carry wireless network to anyplace no matter where you go. With the WCFM-100 CF card adapter-enabled in your Pocket PC (PPC), you can synchronize your PC??s outlook folder, journal, email, contact list, music, or document wirelessly. WCFM-100 CF card adapter liberates you from the confines of the cord and enjoys the extreme mobility. Certainly, it adds the flexibility to connect internet with the CF card adapter-equipped handheld devices. It is designed for travelers and business users while they frequently check schedule, contact list, or surfing the web to look for instant information anywhere. RoHS compliant and Pb-free device To reinforce commitment to environmentally-responsible standards, Meritline WCFM-100 is RoHS compliant and Pb(lead)-free devices. We are steadfastly developing effective technical solutions that reduce Pb content and achieve RoHS compliance without sacrificing product features. Benefits and Features: RoHS compliant and Pb-free Synchronize your PC's outlook folders wirelessly IEEE 802.11g/b compliant with data rate of up to 54 Mbps Compact Flash(CF) format Ideal for travelers and business Compact Flash(CF) format OS support: Windows CE4.2/5.0 , Liunx Easy-to-setup and easy-to-operate Advanced security: 64 & 128 bit WEP, WPA with TKIP, WPA-PSK with TKIP, and 802.1X. Easy for integration into handheld device
Features/Specifications: Belkin Wireless G Notebook Card General Features: Compliant with IEEE 802.11g standards 2.4 GHz wireless band 32-bit CardBus interface 54 Mbps max data transfer rate WPA, 64-bit WEP, 128-bit encryption Activity and Status LEDs Up to 400 ft. operating range PC and Mac compatible Package Includes: Belkin Wireless G Notebook Card Users manual Quick Install Guid=1095e Software CD Additional Information: Product Requirements: Available 32-bit CardBus slot Windows 98SE, ME, 2000, XP Mac OS10.2.6 or later and airport 3.1.1 or later Suitable wireless network
Your Pocket PC can be free from the tangle of wires Meritline WCFM-100 Wireless 802.11g 54Mbps CF card lets your PDA devices carry wireless network to anyplace no matter where you go. With the WCFM-100 CF card adapter-enabled in your Pocket PC (PPC), you can synchronize your PC??s outlook folder, journal, email, contact list, music, or document wirelessly. WCFM-100 CF card adapter liberates you from the confines of the cord and enjoys the extreme mobility. Certainly, it adds the flexibility to connect internet with the CF card adapter-equipped handheld devices. It is designed for travelers and business users while they frequently check schedule, contact list, or surfing the web to look for instant information anywhere. RoHS compliant and Pb-free device To reinforce commitment to environmentally-responsible standards, Meritline WCFM-100 is RoHS compliant and Pb(lead)-free devices. We are steadfastly developing effective technical solutions that reduce Pb content and achieve RoHS compliance without sacrificing product features. Benefits and Features: RoHS compliant and Pb-free Synchronize your PC's outlook folders wirelessly IEEE 802.11g/b compliant with data rate of up to 54 Mbps Compact Flash(CF) format Ideal for travelers and business Compact Flash(CF) format OS support: Windows CE4.2/5.0 , Liunx Easy-to-setup and easy-to-operate Advanced security: 64 & 128 bit WEP, WPA with TKIP, WPA-PSK with TKIP, and 802.1X. Easy for integration into handheld device Enjoy your wifi and history! |
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