A solid set of walkie-talkies can be essential for good backcountry comms, and we've tested the spread to nail down the best for your ...

To solve this problem, ETRI researchers are studying RIS technology that receives signals by attaching ultra-small array antennas in the form of transparent films or panels to building windows or ...

Less expected here was that we’d be seeing fake WiFi repeaters, but recently [Big Clive] got his hands on one and undertook the arduous task of reverse-engineering it. The simple cardboard box ...

When the AMSAT-OSCAR 7 (AO-7) amateur radio satellite was launched in 1974, its expected lifespan was about five years. The plucky little satellite made it to 1981 when a battery failure caused it ...

Engineers often turn to VNAs to measure the return-loss characteristics of an antenna, but they must be used carefully because there are numerous potential ways to ...

Such a duplexer finds its field of application in any system which utilizes the same antenna for simultaneous transmission and reception, for example, a continuous-wave radar. The mm wavelengths are ...

In receiving mode, they collect signals from all beam directions with the full gain of antenna array. The Butler Matrix family includes the 8401, 8401-8, and 8401-16 models that can be used in a ...

Cobham Defense Electronic Systems - Nurad Division recently introduced Model 11C23300, a high performance, robust blade antenna qualified for supersonic flight. This L-Band (960 to 1220 MHz) blade ...