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On Wednesday, Salt Lake City public lands officials hiked for hours up a snowy trail to remove a mysterious device – one that’s popping up all over the foothills. It consists of a locked battery box, a solar panel, and an antenna, according to Tyler Fonarow, the city’s recreational trails manager. “These towers have been bolted into different peaks and summits and ridges around the foothills,” Fonarow explained, “and it started with one or two, and now it might be as much as a dozen.” The first ones appeared about a year ago, but Fonarow said many more were found...

Patch antennas are regularly used in ATVs, beacons, MIMO, wi-fi applications, AMSAT, GPS, repeaters, wireless systems and dish feeds. But what are the pros and cons of using them?

UK Microwave Group (UKuG) member Kent Britain WA5VJB talks about 'Care and Feeding of Yagi’ Antennas' - including some interesting ways to doing Yagi’s and myths of Yagi Stacking. - Recorded from the online UKuG talk on Wednesday 10 February 2021

An overview of the antennas used for surveillance.

The researchers, from the College's Department of Materials Science and Engineering, report that the MXene titanium carbide can be dissolved in water to create an ink or paint. The exceptional conductivity of the material enables it to transmit and direct radio waves, even when it's applied in a very thin coating. "We found that even transparent antennas with thicknesses of tens of nanometers were able to communicate efficiently," said Asia Sarycheva, a doctoral candidate in the A.J. Drexel Nanomaterials Institute and Materials Science and Engineering Department. "By increasing the thickness up to 8 microns, the performance of MXene antenna achieved...

New understanding of electromagnetism could enable 'antennas on a chip' Apr 08, 2015 Enlarge Anechoic chamber. Credit: University of Cambridge A team of researchers from the University of Cambridge have unravelled one of the mysteries of electromagnetism, which could enable the design of antennas small enough to be integrated into an electronic chip. These ultra-small antennas - the so-called 'last frontier' of semiconductor design - would be a massive leap forward for wireless communications. In new results published in the journal Physical Review Letters, the researchers have proposed that electromagnetic waves are generated not only from the acceleration of electrons,...

There is a "coherent and significant connection" between radiation from Vatican Radio aerials and childhood cancer, researchers have said. The Italian experts looked at high numbers of tumours and leukaemia in children who live close to Vatican Radio transmitters. The 60 antennas stand in villages and towns near Rome. The Vatican said it was astonished and would present contrary views to a court in Rome. Italian courts have been investigating for 10 years whether of an abnormally high number of deaths from cancer among families living near the aerials just north of the Italian capital can be attributed to electromagnetic...

This is a reader video found on Macrumors forums illustrating something weird. When the guy holds the iPhone in his hands, touching the outside antenna band in two places, he drops reception. Placing the phone down gets him 4 bars. We're not sure if he's doing something particularly weird, like holding the metal antenna in such a way that it's shorting out. But it is strange. Or, it could be just a bug in the software, showing no bars and no reception even when you do have reception. But, he does hold the phone with the glass, and it doesn't...

A 27-year-old man trying to set up an antenna for a pirate radio station was electrocuted in the backyard of his home Sunday, a Fort Lauderdale police spokesman said. Authorities were called to the home on the 1100 block of Northwest 18th Court about noon, said the spokesman, Frank Sousa. Details were sketchy, but authorities said the electrocution appeared to be accidental.

Five 60-foot dish antennas at Stanford, known as the Bracewell Observatory, are about to be demolished by the school. Bob Lash organized the Friends of the Bracewell Observatory Association to help rescue the dishes and he's done all that he can do to persuade Stanford to stop the demolition. Yet it could happen any day, at the whim of the Dean of Engineering for Stanford, Jim Plummer. Stanford has obtained the demolition permit from Santa Clara County Commissioners. The Bracewell Observatory is named for Professor Ronald Bracewell, a father of radio astronomy, who created this site and built the dishes...