Electronics related websites

Magazines

ElektorEveryday ElectronicsCircuit Cellar

EDN Magazine
IEEE Spectrum

Professional Websites

Wescott Design Services

ElectroOptical Innovations Consulting

Hobbyist websites

Washington Circuit Archive
EE Compedium
Christian Tavernier
GBPPR Homebrew Military & Espionage Electronics 
Steve’s PIC Page
Tim Williams
Online calculators by Daycounter Engineering Services
All About Circuits

Component Manufacturers

Analog Devices

Texas Instruments

Component Distributors

Arrow Electronics

Mouser Electronics

Futurlec

Radio Astronomy

Society of Amateur Radio Astronomy

British Radio Astronomy Club

Hydrogen Line Radio Astronomy

Radio Astronomy Projects – Australia

Radio Astronomy Lab – Italy

MicroControllers and FPGA

HomeBrew CPU Page

Microchip

Intel/Altera

Xilinx

Terasic FPGA Development Boards

VHDL Langauge

Std_logic Libraries

Operation of Numeric_std

RF Electronics

31415 RF-Communication
802.11 2.4Ghz Vertical Collinear Antenna
A Digital AM FM SSB demodulator
Diplexer HF + 6m – 2m + 70cm
Circuit Sage Analog-RF Design Resources
CST Studio GmbH
Free Radio Computer Programs
Jordan’s  RF  Web  Site
RF Cafe – Homepage

Robotics

Boondog Automation
H2Deetoo’s Homepage
Making Mobots
MEM800 GUI-Based Control Web Page
Robot Planet
Stephen Wayne Nolen Robotics
Terry’s Robotic, AI & Electronics Links-font
The educational encyclopedia, electronic circuits, motor control circuits
TheOneSpot – Home
WebRing hub – General robotics
Robot Org UK – Template
BEAM Robotics Tek – Nervous Networks
Robot Kits and components from RobotBits.co.uk