EcuadorMed.com

Octaloop Antenna
A gif schematic of a 8 sided antenna with mount details.
www.lwca.org/

Harry's Homebrew Homepage
Extensive collection of useful receiver, antenna and peripheral homebrew projects, for ham radio and other DX hobbyists.
sm0vpo.8m.com/

Altair's Natural Radio Projects
Exploring the electromagnetic spectrum.
www.altair.org/

Receiving Loop Theory - N4YWK
Sensitivity of multi turn receiving loops.
www.lwca.org/

Electronic Projects and Electronics Tutorials
An electronics tutorial radio design site. A page that covers nearly every conceivable subject of RF design and construction; with tips, hints and advice.
my.integritynet.com.au/

How does a RF receiver work ?
How do radio receivers manage to communicate over huge distances? An explanation of the fundamental mechanism.
www.4p8.com/

How Stuff Works: How Radio Works
Explains radio operation basics, transmitters, receivers and antennas.
www.howstuffworks.com/

NGSSoftware
Security scanners and assessment tools for Oracle, Domino, and SQL Server. Checks for weak passwords and vulnerability to SQL injection and cross-site scripting.
www.nextgenss.com/

Security Industry Online
The Security Industry Association (SIA) is a full service, information clearing house, trade association representing the manufacturers of security products and services.
www.siaonline.org/

AppDetective
Penetration testing scanner that locates and assesses the strength of databases and web applications within your network.
www.appsecinc.com/