The OM3KUK radio club operates a pair of web-based SDR receivers located at the Vršatec – Chmeľová location, in the grid locator JN99BB, at an altitude of…
receiver
A receiver is a device that serves to amplify and process the signal captured by the antenna. Most often, radio amateurs encounter a superhet receiver, which uses signal processing at an auxiliary frequency, the so-called intermediate frequency. Direct mixing receivers are also suitable for beginners, which are structurally simpler. In recent years, SDR receivers have been spreading, which are characterized by high intermodulation resistance and the ability to adjust the receiver properties in software.
When choosing a modern HF transceiver, a radio amateur is often faced with a number of technical parameters. Manufacturers list sensitivity, dynamic range, blocking, phase…
Software-defined radios have become an integral part of amateur radio operations in recent years. From simple RTL-SDR receivers to professional wideband…
Radio amateurs like to compare technical parameters. Datasheets look at IMD, blocking dynamic range, phase noise, ADC architecture, roofing filters, DSP...
The construction of a modern ham radio station (hamshack) has undergone a radical transformation over the past decades. While the classic tabletop transceiver (TCVR) equipped with advanced circuitry…
The modern era of amateur radio brings with it an interesting paradox. On the one hand, we have access to cutting-edge digital technologies and sophisticated software…
The summer months and storm activity bring a period of increased stress for every radio amateur. This does not mean the voltage in the power supply, but…
Automatic gain control, known as AGC (Automatic Gain Control), is one of the basic functional blocks of any quality receiver. Its task…
In amateur radio practice, we often encounter the need for effective audio path management, especially when transitioning between reception (RX) and transmission...
The question of antenna system efficiency is one of the oldest and most complex topics in amateur radio. Every operator who has ever stretched a wire between…
The amateur radio community has received a significantly improved WebSDR receiver at http://sdr.homeip.net:8901/. After six weeks of intensive modifications and upgrades, Mike stated,…
On September 14, 2025, Randy Williams K5RMN announced the launch of the new RM Noise web client, which is currently available in the development phase…
Honza OK2ZAW brings a new product to hamparts.shop: a small 6+1 antenna switch for receiving antennas. This antenna switch was specially developed for…
In amateur radio practice, we often encounter interference caused by the back-penetration of a high-frequency (HF) signal through the power supply network - that is...
HDSDR is built on the older Winrad SDR software and offers a better user interface, broad compatibility, and high decoding performance…
Xiegu GNR1 digitálny audio filter šumu je zariadenie na spracovanie zvuku, ktoré integruje digitálne potláčanie šumu a digitálnu filtráciu. Účinne…
Na Tokyo Ham Fair predstavil Icom nový transceiver kv+6m v high-end kategórii. IC-7760 koncepčne tvorí odnímateľný predný panel a telo,…
The Holice Amateur Radio Meeting is a prestigious event that annually attracts radio communication enthusiasts from different parts of the world. It is traditionally held in…
The SQUARE SDR proves that it is possible to create a modern SDR with tiny dimensions. Its design includes a printed circuit board with…
KiwiSDR 2 SDR receivers were supposed to be shipped to the first orderers at the beginning of February. However, at the last minute, a software bug was found and…