In the era of software-defined radio (SDR), the amateur radio workplace has changed dramatically. Hardware is no longer a separate world, but is tightly connected…
amplifier
An amplifier is an electrical device that increases the voltage, current, and power of an incoming signal. Radio amateurs use both transistor and tube amplifiers (tubes are more controllable at higher powers and have better voltage-to-current ratios).
Hilberling GmbH is based in Schacht-Audorf near Rendsburg in Schleswig-Holstein and is one of the few European manufacturers that builds amateur radio equipment…
Practical benefits of the RM Italy MLA 400 HF amplifier The RM Italy MLA 400 is a transistor linear HF amplifier operating in the range…
When Icom launched its high-end LDMOS linear amplifier IC-PW2, it was clear that the modern hamshack required more…
Every radio amateur who has ever tackled building a balun, antenna choke, broadband transformer, LPF, BPF, or RF amplifier, or rather...
Bulgarian manufacturer ACOM has built a strong name in the amateur radio community primarily thanks to the reliable tube designs that have been creating and…
For decades, the measurement and optimization of antenna systems, filters, and radio frequency (RF) circuits have been the domain of expensive laboratory equipment. The average radio amateur…
Modern semiconductor power amplifiers (PA) equipped with LDMOS transistors (for example, the popular ART1K6, ART2K0FEU or classic BLF188XR series transistors) have brought to amateur radio…
Automatic gain control, known as AGC (Automatic Gain Control), is one of the basic functional blocks of any quality receiver. Its task…
Grom2k amplifiers (often written as GROM2K) are powerful HF (shortwave) amplifiers designed for amateur radio operations. They are designed for those who…
Do you also feel that the newer the TCVR, the less it is interoperable with anything else? Imagine buying…
Radio amateurs who use a computer to control their transceivers, rotors, or amplifiers are well aware of the Hamlib project – a universal library and toolkit…
In October-November 2025, the amateur radio community is preparing for a significant DX expedition: 9U1RU, which will take place in Burundi (Central African Republic…
The amateur radio community received sad news in early September 2025 – the long-awaited 3C2MD expedition to Equatorial Guinea was unexpectedly canceled.…
Novinka od Xiegu GPA100 je kompaktný, 100 W (na väčšine HF pásiem) solid-state lineárny amplifier navrhnutý pre rádioamatérov, ktorí hľadajú…
After completing the first part of the VK9XU DX expedition, the team will move to the Cocos Islands from March 4th to 11th, 2025, where…
The German-Australian DX expedition will set off in a few days. From February 18th to March 4th, 2025, they will start as VK9XU from…
The S9Z signal started to appear on the bands earlier than DXpers expected. It is an expedition organized by the Dateline DX Association (DDXA)…
Vladimír OK2WX, who is currently broadcasting from Mafia Island as 5H1WX, will be part of a 14-member team that will be…
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…