But there’s a financial component to it, too; high-frequency (HF) band privileges come both ... we’ll look at a simple but versatile antenna design that can be adapted to support everything ...

they report a new antenna design with a range four times larger than that of a conventional antenna worn on the body -- one that is used by American soldiers today. "Our primary goal is to improve ...

This has made small antennas more popular, despite some limitations. [Tech Minds] reviews the GA-450 indoor active HF loop antenna and finds it better than expected. You can see the video review ...

SAN DIEGO, Aug. 10, 2021 (GLOBE NEWSWIRE) -- GBT Technologies Inc. ( OTC PINK: GTCH ) ("GBT” or the “Company”), is now evaluating and testing self-tuned antenna technology in order to ...

At present, portable receivers generally use ferrite rod antennas for LF and MF (below 2 MHz), and whip antennas for HF (up to 30 MHz). Each type has proved effective in its particular application.

But a group of scientists at the University of Michigan are looking to change that: They've that can is smaller and more efficient than the current multidirectional antenna design ... by Wi-Fi as well ...