FreeDV in Amateur Radio: New Modes
FreeDV is an open-source digital voice mode designed for use on the HF amateur radio bands. It replaces traditional analog SSB (Single Sideband voice with compressed digital audio, delivering clearer…
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Soil Affects Antenna Performance: Learn The Difference
How soil affects antenna performance, it plays a crucial role in determining its efficiency, particularly for vertical and ground-mounted systems. Soil impacts the ground conductivity and dielectric constant, both of…
Toroid Mix for Baluns and Chokes
Toroid mix plays a critical role in the design and performance of baluns and common-mode chokes, especially in ham radio and RF applications. The key to effective performance lies in…
HF Radio Propagation: How Weather Effects Propagation
HF radio propagation relies on the ionosphere to reflect signals back to Earth. Because of this, environmental and atmospheric conditions can significantly influence signal behavior. While many factors play a…
What Is Cross Band Repeat
Certain dual-band amateur radios feature a powerful function called cross band repeat. Particularly mobile transceivers. It allows the radio to receive on one band (usually UHF or VHF) and automatically…
Single Sideband: Understanding This Mode
Single Sideband, or SSB, is a highly efficient form of amplitude modulation widely used in amateur radio, marine communication, and aviation. While AM transmits a carrier and two identical sidebands,…
The Holy Cluster: Next-Gen Ham Radio DX Spotting Tool
The Holy Cluster is a modern web-based DX cluster for amateur radio operators. It plots live worldwide spots on an interactive map, making DX (long-distance contact) hunting more intuitive than…
QSL Cards: The Paper Confirmation
QSL Cards are paper confirmations of signals that traverse the airwaves, a tangible and cherished tradition that is still going strong today. Much more than a mere confirmation of contact,…
How to Send QSL Cards
How to Send QSL Cards, many hams exchange cards to complete DXCC, Worked All States, or other operating awards. Some radio contests even require QSL card confirmation to verify your…
Radio Waves: Understanding The Process
How a Radio Waves are Transmitted is a complex and fascinating process that begins with electrical energy and ends with invisible waves traveling through the air. Each component in the…