Using digital techniques has caused a resurgence of interest in VLF — very low frequency — radio. Thanks to software-defined radio, you no longer need huge coils. However, you still need a suitable ...

Ken Beckwith is a field engineer with EMF based in Nebraska. Being a hands-on engineer, Ken has done his share of construction over the years. One of his projects was the construction of an ...

AM reception can be very difficult because of the inherent succeptibility AM has to electrical noise and other sources of interference. The built-in antenna in most receivers – a coil and a ferrite ...

AOR USA has added a highly sensitive and directional “loop” antenna to its product line. The LA800 is designed for outdoor use by monitoring enthusiasts. It combines the proven and timeless ...

The only way to determine the characteristics of an antenna is to measure its performance since theory alone cannot predict the actual results. The fields generated by antennas are extremely complex ...

UK company Sarantel has developed a twisted loop antenna with a near field of less than 1mm The closeness of the near field makes it possible to place more than one antenna within a single device.

Joe Turbolski, who many of you may know through his work at Thomson Broadcast, was kind enough to send me information on two do-it-yourself antennas he's been experimenting with at home. One of these ...

Harris Corp., Rochester, New York, has been awarded a maximum $12,245,098 firm-fixed-price, indefinite-delivery/indefinite-quantity contract for high-frequency full ...

We don’t know if [OH8STN] has a military background, but we suspect he might since his recent post is about a “DIY Man Portable Magnetic Loop Antenna.” “Man-portable” is usually a military designation ...