The Space-RF JournalDeep signal in a noisy world - Articles about Radio, Technology, Ocean, and Spacehttps://space-rf.org/en-usCopyright 2026 Pacific Research & Technology Housecontact@space-rf.org (The Space-RF Journal)contact@space-rf.org (The Space-RF Journal)https://space-rf.org/images/logo.pngThe Space-RF Journalhttps://space-rf.orgVertical Phased Array Antenna Systemhttps://space-rf.org/articles/vertical-phased-array-design/https://space-rf.org/articles/vertical-phased-array-design/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.Sat, 18 Jan 2025 00:00:00 GMTRadioAaron MandalPacific HF Shore Station Design and Implementationhttps://space-rf.org/articles/building-pacific-hf-station/https://space-rf.org/articles/building-pacific-hf-station/A comprehensive treatment of HF shore station design for maritime communications across Pacific distances, covering site selection, antenna systems, propagation adaptation, and operational automation.Wed, 15 Jan 2025 00:00:00 GMTRadioChiradip MandalIonospheric Propagation Fundamentalshttps://space-rf.org/articles/understanding-ionospheric-propagation/https://space-rf.org/articles/understanding-ionospheric-propagation/A comprehensive treatment of ionospheric propagation physics for engineers designing long-range HF communication systems, including layer characteristics, frequency selection, and prediction methodologies.Sun, 12 Jan 2025 00:00:00 GMTTechnologyBothDeep Space Network Architecture and Link Engineeringhttps://space-rf.org/articles/deep-space-network-fundamentals/https://space-rf.org/articles/deep-space-network-fundamentals/A technical analysis of NASA's Deep Space Network, covering antenna systems, link budget engineering, signal processing techniques, and the fundamental physics enabling communication across billions of kilometers.Fri, 10 Jan 2025 00:00:00 GMTSpaceChiradip MandalSoftware-Defined Radio System Architecturehttps://space-rf.org/articles/software-defined-radio-architecture/https://space-rf.org/articles/software-defined-radio-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.Wed, 08 Jan 2025 00:00:00 GMTTechnologyChiradip MandalUnderwater Acoustic Communication Systemshttps://space-rf.org/articles/underwater-acoustic-communications/https://space-rf.org/articles/underwater-acoustic-communications/A technical analysis of underwater acoustic communication systems, covering propagation physics, channel modeling, modulation techniques, and practical system design considerations for maritime applications.Sun, 05 Jan 2025 00:00:00 GMTOceanBothSpace Weather Effects on HF Radio Propagationhttps://space-rf.org/articles/space-weather-radio-propagation/https://space-rf.org/articles/space-weather-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.Thu, 02 Jan 2025 00:00:00 GMTSpaceChiradip MandalEarth Moon Earth (EME) Labhttps://space-rf.org/articles/earth-moon-earth-eme-lab/https://space-rf.org/articles/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.Wed, 20 Mar 2024 00:00:00 GMTSpaceKM6BSO & K2ATC