AES Ham Radio Store - http://www.aesham.com/ I've been a long time customer of AES. I bought my first RIG here. They have locations in Orlando, Cleveland, Milwaukee and Las Vegas.
Amatuer Radio Antenna Projects - http://www.ac6v.com/antprojects.htm AC6V has collected many antenna theory information as well as projects for the home brewer.
Antenna theory, basics,design antenna - http://www.dxzone.com/catalog/Antennas/Theory/ It is better to have an antenna than no antenna at all.
APRS - http://eng.usna.navy.mil/~bruninga/aprs.html The Automatic Packet Reporting System was designed to support rapid, reliable exchange of information for local, tactical real-time events or nets. The concept is that each station with new information transmits his new data to everyone in the net and every station captures that information for consistent and standard display to all participants. Since the primary objective is consistent exchange of information between everyone, APRS established standard formats not only for the transmission of POSITION, STATUS, MESSAGES, and QUERIES, it also establishes guidelines for display so that users of different systems will still see the same consistent information displayed in a consistent manner (independent of the particular maping system in use). See APRS.TXT.
APRS: Automatic Position Reporting System - http://www.aprs.net/ APRS is a system developed by Bob Bruninga, WB4APR, which uses amateur radio to transmit position reports, weather reports, and messages between users. My contribution is the internet portion of the system. Although ham radio is capable of digital long distance communications, it tends to be slow and unreliable, especially when compared to the internet. I've written software to take the data received locally and make it available via the internet, to be displayed with a Java applet.
Arbonet - http://arbonet.net/ ARBONET stands for Amateur Radio Balloons Over North East Texas.