Articles

In-depth explorations of radio communications, technology innovations, ocean systems, and space applications.

Filter:

8 articles

Vertical Phased Array Antenna System
Radio January 17, 2025

Vertical Phased Array Antenna System

Technical design for a four-element vertical phased array antenna system for HF beyond-line-of-sight communications, covering element design, phasing networks, ground systems, and site layout.

By Aaron Mandal Read more
Ionospheric Propagation Fundamentals
Technology January 11, 2025

Ionospheric Propagation Fundamentals

A comprehensive treatment of ionospheric propagation physics for engineers designing long-range HF communication systems, including layer characteristics, frequency selection, and prediction methodologies.

By Both Read more
Software-Defined Radio System Architecture
Technology January 7, 2025

Software-Defined Radio System Architecture

A comprehensive technical treatment of software-defined radio architectures, covering RF front-end design, analog-to-digital conversion theory, digital down-conversion, and baseband signal processing implementation.

By Chiradip Mandal Read more
Underwater Acoustic Communication Systems
Ocean January 4, 2025

Underwater Acoustic Communication Systems

A technical analysis of underwater acoustic communication systems, covering propagation physics, channel modeling, modulation techniques, and practical system design considerations for maritime applications.

By Both Read more
Space Weather Effects on HF Radio Propagation
Space January 1, 2025

Space Weather Effects on HF Radio Propagation

A systematic analysis of space weather phenomena and their effects on HF radio propagation, including solar flares, coronal mass ejections, geomagnetic storms, and operational mitigation strategies.

By Chiradip Mandal Read more
Earth Moon Earth (EME) Lab
Space March 19, 2024

Earth Moon Earth (EME) Lab

A comprehensive guide to EME communications covering link budget analysis, signal strength calculations, antenna considerations, and practical techniques for successful moonbounce contacts.

By KM6BSO & K2ATC Read more