Reference

Articles and technical information about higher frequency RF.

A listing of electronics companies, semiconductors, chips, discretes, passives and actice components.

A parametric search engine for RF and microwave components including amplifiers, antennas, filters, connectors, isolators, switches and transceivers.

Electronic circuits, kits, do-it-yourself, circuit diagrams, design and electronics hobby schematics from alarms to test circuits.

Schematic index: audio, RF, power, switching and miscellaneous circuits.

Online retailer of a large selection of new and used electrical, electronic and electromechanical supplies.

An electronics tutorial radio design site. Covers RF design and construction; with tips, hints and advice.

Alphabetically arranged list of semiconductor manufacturers.

Mixers, directional couplers, bartlett's bisection theorem, constant current sources, PLL and an excellent introduction to HP's ADS.

A really slick design guide for all sorts of filters. Includes DSP filters.

This is a basic introduction to the concepts of charge, voltage, and current. Discusses Coulomb's Law, Ohm's Law, and power. Includes graphics and animations.

Quite a bit of theory, practical advice, math and diagrams, from basic electronics theory to very advanced physics.

Application notes and technical documents from Tektronics: test and measurement, communications, video test.

Information on vintage H.H. Scott (vacuum tube) consumer high fidelity audio products produced from 1946 through 1966. Includes schematics.