This article is intended to introduce the beginner to the interesting and challenging art of high frequency radio design. It is also intended to entice the seasoned professional to take a deeper look ...

Fully assembled and tested in the USA by K9DP. This is the Male/Female BNC connector version. Connect the filter directly to your QRP radio without adapters! Designed to help HF radios and receivers ...

As discussed in Part 1 of this series, as the frequency of a single or coupled tuned circuits is increased, the selectivity decreases to the point that there may be insufficient selectivity at the ...

We will have all at some point seen a fascinating project online, only to find not enough information to really appreciate and understand it. Such a project came [Bill Meara]’s way over at the ...

There are two ways to deal with improving ham radio receivers, or — for that matter — any sort of receiver. You can filter and modify the radio frequency including the radio’s intermediate frequency, ...

Radio receiver company C. Crane has introduced the CCRadio-2, a battery-operable AM/FM/Weather receiver with a twist: a ham band. During emergencies, it is not unusual for local and regional amateur ...

Australia’s Barrett Communications launched its new PRC-4090 tactical high frequency (HF) software-defined radio (SDR) at the 2019 Defence and Security Equipment International exhibition (DSEI 2019) ...

FORT HUACHUCA, Ariz., -- More than a century after Guglielmo Marconi helped pioneer trans-Atlantic communications, High Frequency (HF) has continued to be a consistent, economical and reliable ...

BEL unveiled a new manpack version of its HF SDR at the Aero India 2023 show in Bangalore. (Janes/Rakend P) India's state-owned Bharat Electronics Limited (BEL) unveiled a manpack version of its newly ...

ST LOUIS, Feb. 24, 2025 /PRNewswire/ -- Reticulate Micro, Inc. (OTCQB: RMXI) ("Reticulate Micro," "we," or the "Company"), a software products company specializing in advanced video compression and ...

Researchers invented a novel method to measure the permittivity of insulators 100 times more accurately than before. This technology is expected to contribute to the efficient development of sensitive ...