40.) 802.11b: NETGEAR ANT24O5 5dBi Omni-Directional 802.11 22.99 http://www.compuplus.com/ D-Link ANT24-0600 - Antenna - 802.11 b/g - indoor - 6 dBi – directional 14.99 http://www.amazon.com/D-Link-ANT24-0600-Antenna-802-11-directional/dp/B00064AW62

802.11a:
TRENDNET TEW-AI75OB DUAL-BAND 802.11A/G 7/5DBI ANTENNA (TEWAI75OB) 23.65

http://www.beachaudio.com/Trendware/Tew-Ai75ob-p-89924.html?utm_source=froogle&utm_medium=cpc&utm_campaign=tew-ai75ob&utm_content=atr

Outdoor Pannel Antenna 23DBI 802.11A Directional 152.00

http://www.amazon.com/Outdoor-Pannel-Antenna-802-11A-Directional/dp/B0016HM8VA

802.11g:
PROSAFE™ 9 DBI OMNI-DIRECTIONAL ANTENNA ANT2409 129.99

http://www.netgear.com/products/business/access-points-wireless-controllers/antennas-cables/ANT2409.aspx
Sewell Part #: SW-6130 Mfg Part #: TEW-OA24D 164.95 http://sewelldirect.com/trendnet-802-11g-wireless-WLAN-24dBi-outdoor-antenna.asp?source=froogle&utm_source=Froogle&utm_medium=cse&cvsfa=1306&cvsfe=2&cvsfhu=53572d36313330 802.11n:

CP TECH OAN-2151 Omni-directional Antenna $64.24

http://www.buy.com/prod/cp-tech-oan-2151-omni-directional-antenna-15-dbi-n-type/q/loc/101/210878384.html

Netgear ProSafe ANT224D10 2X2 Indoor/Outdoor 10 dBi Directional Antenna, RoHS Compliant, P/N: ANT224D10-10000S. $230

http://www.axiontech.com/prdt.php?item=90457 41.) I would look around and see what other wireless devices, cordless phones, Bluetooth devices and the such to see what would be causing the interference. I would utilize a wi-fi analyzer application to determine where the signal strength is best and relocate the access point or move the interfering device if possible.
42.) Dear Supervisor: Utilizing a secured wireless network with EAP protocol is definitely a way to seriously reduce unauthorized access to the network, it is still not enough. There are many programs out there designed to sniff out networks, then decrypt their passwords. By utilizing encryption software running on the server and the clients, even if data is captured from the airwaves, they will still not be able to read the data because they do not have the proper decryption code.