Introduction to Radio Frequency Design -- Basic RF concepts (with some related analog subjects) for the amateur or engineer.

Digital Signal Processing Technology -- Essentials of the Communications Revolution. An understandable presentation and reference on DSP in contemporary communications technology.

ARRL's Vintage Radio -- Articles about the lure of vintage Amateur Radio gear.

Do-It-Yourself Circuitbuilding for Dummies -- A fun and easy way to start building circuits for your projects!

Discrete-Signal Analysis and Design -- A clear, step-by-step approach to practical uses of discrete-signal analysis and design, especially for communications and radio engineers.