Fig. 1: Operating at 17.2 kHz, the Alexanderson alternator rotating armature radio transmitter at the Varberg Radio Station at Grimeton near Halland Sweden is the only one of its type in the world.

CNET's Marguerite Reardon explains wireless spectrum in layman's terms and tells why it's so important to what's happening in the wireless market today. Marguerite Reardon Former senior reporter ...

Medical device makers are seeking their own frequency band for body monitors from the FCC. Today I was copied on one of the industry petitions for frequency spectrum, specifically that of Philips. The ...

Like most modern radio communications devices, wireless local-area networks (WLANs), RFID tags, and 3G cellular systems rely on complex modulations that require specialized signal-analysis ...

The Shrinking Airwaves Wireless microphones used to have plenty of room to breathe. For decades, most systems operated comfortably within the UHF television range from 470-806 MHz. These frequencies ...