Amateur radio operators are called hams, and it is easy to see why: talk, talk, talkthat's all they seem to do. There are 250,000 of them in the U.S., and another estimated 100,000 elsewhere in the world, all of them chiefly bent on short-wave conversation about capacitors, resistors, transmitters, antennas, and occasionally, the weather and what is playing at the local movie house.
Some of them operate with elementary do-it-yourself kits and low-power equipment that costs less than $100; others go in for more elaborate commercial rigs, build their stations up to the...
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