HEATKEYS

All about commercial ships and the people who sail them.

Bird wattmeters, Henry RF power amplifiers for communications and paging

IEEE Xplore. Delivering full text access to the world

Audio Systems Group, Inc. consults on acoustics and the design of sound systems for performance, worship, and other public spaces.

Learn how a car works and how to fix cars with plenty of illustrations

The Ultimate Source for Electromagnetic Pollution Detectors, Shielding Devices and Protection Information

The leading supplier of microwave absorbing materials for commercial and defense applications. While providing a complete range of standard absorber products, ARC Technologies also offers dielectric materials, composites, radomes, and radar absorbin...

DX Engineering - High Quality Antennas, Systems, Components, Station Accessories!

Earth Science Technology Office (ESTO) project home page.

Amateur (Ham) radio website with information for those who want to be a ham radio operator,new ham and general information for the seasoned ham radio operator. License Study Material, Practice tests, practice code, antenna design, lots of ham radio i...

A Web Site For Mobile Amateur Radio Operators

CUMING MICROWAVE ? A Global Supplier of Microwave Absorbers, Radar Absorbers, Dielectric Materials, Anechoic Chambers, EMC Chambers for the Defense, Electronic, Telecom, Medical and Automotive Industries - A Complete Line of EMI Absorbers and EMI Sup...