http://www.tycoelectronics.com/catalog/bin/TE.Connect?C=1&M=BYPN&TCPN=1734035-1&RQPN=1734035-1

mini 5 pin micro usb pc mount connector

mouser usb connectors

Antenna: 9dbi OMNI Wireless Dipole w/ RP-TNC connector: Fits Cisco LinkSys Router/WAP  PRICE: $9.99

Antenna: 7dbi magnetic-mount omni w/ RP-TNC - Fits LinkSys & Cisco wireless routers  PRICE: $9.99

 175N82E16833124012 WAP54G Wireless AP / Bridges      2.4 GHz ISM Band, Bandpass Filter $700

mobile unit  Alfa Wireless-N:   USB ADAPTER:  500mW  $59.99

WIRELESS LAN 802.11 STANDARDS

Calculating Gain from addition of an antenna: 
 3 dB rule": For every 3 dB increase in level, the power is doubled. For every 3 dB decrease, the power is cut in half.
10 dB rule": Every 10 dB increase in level results in 10 times the power, and every 10 dB decrease in level results in 1/10 the power.

  Signal loss in cable:  If a cable connects your device to the antenna, take signal-loss in the cable into consideration:  See section below.

  See more detail:  Table of power increase multiples from increase in dB by various amounts. See table on right side of this page.

Range: 

14dBi antenna:  Range up to eight miles, at 11Mbps.  Range is longer at lower transmission speeds such as 1, 2 or  5Mbps.

24dBi antenna:  A point-to-point link using two 24dBi antennas pointed at each other, could effectively transmit/receive signal over a distance of 18 miles.

It is best to have the shortest cable that will serve your needs, since a small amount of signal strength is lost in the antenna cable.  This loss amounts to 1.28dBi per meter (39") Length.

Gateway 7001 Series Access Point User Guide Explained site for a unit

My Black Gateway USB AP unit    Www.wirelessunits.com

Transmitter Output Power 20dBm +/- 1 dBm@ 11a 27dBm +/- 1 dBm@ 11b/g = 500mW Tx 21dBm +/- 1 dBm@ 11b/g/n Receive Sensitivity for 802.11g 54Mpbs(64QAM): -76dbm 48Mbps (64QAM): -71dbm 36Mpbs (16QAM): -78dbm 24Mbps (16QAM): -80dbm 18Mbps (QPSK): -81dbm 12Mpbs (QPSK): -82dbm 9Mbps (BPSK): -85dbm 6Mbps (BPSK): -91dbm Data Rate       802.11a: 54Mbps 802.11b: Up to 11 Mbps 802.11g: 54Mbps 802.11n: Up to 300Mbps Ralink RT2770F Chipset

mobile unit  Alfa Wireless:N RP-SMA (female) to USB ADAPTER:  500mW $47.99   includes 2db antenna

High-Gain Antennas good site    RP-TNC -

The client router is the router which does not have an internet connection

http://www.dd-wrt.com/wiki/index.php/WDS_Linked_router_network

http://www.dd-wrt.com/phpBB2/viewtopic.php?t=6088

Contents Typically, vendors such as Linksys charge more for devices which work as standalone WAPs because routers are typically used by home users and WAPs are more popular for businesses. With DD-WRT you can buy a device marketed as a router and use it as a WAP.

LINKSYS WAP54G Wireless-G 54Mbps Access Point - Retail $64.00

• Standards: IEEE 802.3/3u, IEEE 802.11b/g
• Device Management: Web-Based
• Data Rates: Up to 54Mbps
• Security: 64/128-Bit WEP
• WPA/WPA2: WPA
• Frequency Band: 2.4GHz
• Antenna: Dipole Antenna
• Transmitted Power: 15dBm
• Model #: WAP54G
• Item #: N82E16833124012
• Return Policy: Standard Return Policy
• mine is v. 2.0      serial #. CDF5
• Linksys Fourm     DD-WRT Fourm     DD-WRT Main Page

Flashing Firmware with DD-WRT  Firmware ( how do Page )