The DXZone Amateur Radio Internet Guide, ces 90 derniers jours
DX Zone is a portal dedicated to ham radio (amateur radio) with a human edited links directory dedicated to long-distance and two-way radio communictations
vendredi 26 avril 2024
jeudi 25 avril 2024
mercredi 24 avril 2024
mardi 23 avril 2024
lundi 22 avril 2024
dimanche 21 avril 2024
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Top Amateur Radio Websites - Issue 2416
Magnetic Loop Antenna Builds and Autotuning Advancements, Hostilog, Evolution of Car Radios: From Marconi to Motorola, Mastering Magnetic Loop Antenna Control, DXTRON DX Cluster, W2LCW Long Island CW Club, IQ Output for the Elecraft (...)
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Double Tuned Receiver Band-pass Filter Design Center
This webpage caters to EMRFD owners, offering insights into building popcorn receiver band-pass filters ... - Listed in Technical Reference/Filters
samedi 20 avril 2024
vendredi 19 avril 2024
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RSP Spectrum Analyser
The analyser has been written to support the full range of SDRplay SDR radios ... - Listed in Software/Spectrum analyzers
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3G0YA Log Online
3G0YA DX Pedition to Easter Island Online log. Log search provided by club log. - Listed in DX Resources/Logs
jeudi 18 avril 2024
mercredi 17 avril 2024
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Mini Whip - Active HF Antenna
The author investigated electric field antennas and achieved promising results with a shortened active ... - Listed in Antennas/Active
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CCXD Award
The CCXD Award (The Century Club of eXtreme difficulty is one of the most ... - Listed in Operating Aids/Awards
lundi 15 avril 2024
dimanche 14 avril 2024
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Top Amateur Radio Websites - Issue 2415
Telescopic Fiberglass Antenna Pole Support Method, Full size 80m End Fed Half Wave Antenna, 4m Tall Vertical Dipole for 20m , ShortwaveDB Map, MorsePractice, LogConv, FISTS Log Converter,
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TX7W Raivavae, Austral Islands
DX Pedition Austral Islands by Jeff Martin – K5WE, Craig Boyer – W5CCP April ... - Listed in DX Resources/DX Peditions/2024 DXpeditions
samedi 13 avril 2024
vendredi 12 avril 2024
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A portable 3 element 6m Yagi
Antennas/6M/6 meter Yagi Antennas A small Yagi antenna for camper van. It is made of aluminum tubing, breaks down for storage, and works well for communicating with others. He built it in an afternoon and it gets good signal. The antenna is lightweight and can be packed up to fit inside his van (...)
jeudi 11 avril 2024
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QRP Cluster
DX Resources/Clusters QRP self spotting Cluster, where every QRP broadcasting enthusiast can announce on which frequency they are working, in which mode, or with what equipment and power they are working.
mercredi 10 avril 2024
mardi 9 avril 2024
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K4SWL Antenna Plus
Antennas/Portable This project details building a multi-band antenna for park activations. The author constructs a random wire antenna with a 9:1 UnUn for improved performance. Winding the toroid core proved challenging, but the completed antenna shows promising results in initial tests with an (...)
lundi 8 avril 2024
dimanche 7 avril 2024
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Top Amateur Radio Websites - Issue 2414
DIY EMC/RFI Mains Filter for a Clean Shack, G4WIF End Fed Half Wave Antenna , Antennas for QRP Operation, Innovative 2m to HF Converter, Exploring the Spectrum From HF to UHF Frequencies, Boondock Echo 2 way ham radio recorder, Building an Enhanced APRS IGate with Debian 12 and Raspberry Pi, (...)
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An Overview of Beverage Receiving Antennas
Antennas/Beverage This article explores Beverage antennas, a type used for low-frequency radio reception. Despite the mystique, they are relatively simple wire antennas placed near the ground. Their key benefit is improved signal-to-noise ratio by rejecting unwanted signals. While lengthier (...)
samedi 6 avril 2024
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Repairing a dead Kenwood TS-850S
Radio Equipment/HF Transceivers/Kenwood TS-850 The author fixed a friend's Kenwood TS-850S radio, which suffered from Capacitor Plague, a common problem in 1990s electronics where capacitors leak and damage circuit boards. The CAR board, responsible for generating signals, was especially (...)
vendredi 5 avril 2024
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Multi-Band End-Fed Antenna Design for Limited Space
Antennas/End-Fed This document details the construction of a multi-band end-fed antenna, suitable for situations with limited space for larger antennas. The design utilizes a 1:49 to 1:60 impedance transformer to match a half-wave wire antenna fed at one end. Compared to a traditional dipole, (...)
mercredi 3 avril 2024
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Reversible 40 Meter Moxon
Antennas/40M The author wants a compact, switchable antenna for 40-meter ham radio. They compare 3 designs: rectangle, short-tipped W6NL, and T-hat. All work well electrically, but mechanics matter for a large antenna. The rectangle needs strong support, while the T-hat is sturdier with (...)
mardi 2 avril 2024
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Beverage Transformers for HF Receiving Antennas
Antennas/Beverage This FAQ covers building and buying transformers for loop-on-ground and Beverage antennas. Building one uses ferrite cores and thin wire. Buying is an option, with the DX Engineering BFS-1 being recommended. These transformers isolate the antenna from the cable to prevent (...)
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40 meters band beverage antenna
Antennas/Beverage The author describes his experience building and using a Beverage antenna for the 40-meter band. Despite encountering some challenges, the antenna offered some improvements in receiving stations compared to a 3-element inverted Vee antenna. The Beverage antenna showed a (...)
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The Reversible BOGs
Antennas/Beverage The author struggled with receiving antennas on his property. After a standard Beverage on Ground (BOG) antenna failed, he built a Reverse Beverage on Ground (RBOG) using telephone cable. He details construction and testing, finding the RBOG outperformed other antennas in (...)
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Reversible RG6 Beverage Antenna
Antennas/Beverage The author describes building a reversible Beverage antenna for low-band receive applications. He details the construction process, challenges faced, and initial performance testing. The antenna uses coaxial cable and transformers for switching direction. Overall, the author (...)
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Beverage Lightning Protection
Antennas/Beverage The article describes adding lightning protection to Beverage antennas, which are long wires susceptible to lightning strikes. The author reviews common lightning protection circuits and discusses their components. They then detail their design based on existing methods, (...)
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Reducing RFI from PoE Devices
Technical Reference/Radio Frequency Interference/Noise Reduction Hams can be annoyed by noise from PoE cameras and access points. These devices and their long cables act like antennas, picking up and spreading unwanted radio signals. By wrapping ferrites around the cable will reduce this noise. (...)
lundi 1er avril 2024
dimanche 31 mars 2024
samedi 30 mars 2024
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Top Amateur Radio Websites - Issue 2413
Budget-Friendly 5-Element Quad Antenna Design, Budget-Friendly QRP T-Tuner and SWR Bridge, A Guide for Seamless FT8 Operation - Time Sync, Building a Robust PL519 Tube HF Amplifier, GMA Maps, Adapting Standard Headset Mic for Yaesu FT-8900, Portable Efficiency: Building a KX3 (...)
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QLog
Software/Logging QLog is a free log book program for Amateur Radio users that works on Linux, Windows, and Mac OS. It's made with the Qt framework and uses SQLite for storing data. QLog tries to keep things easy to use while offering all the features you'd need in a logbook. It's not meant (...)
vendredi 29 mars 2024
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QSL Card Generator Online
Software/QSL This app will generate a QSL card design based on the input paramters as a PDF. Fields marked by a * are required, but the rest are optional. The options at the bottom allow you to customise the look and feel of the QSL card. If you would like, you can also download the LaTeX (...)
jeudi 28 mars 2024
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UniBalun: Lightweight Balun/UnUn PCB for QRP Radios (1:1, 1:4, 1:49)
Antennas/Baluns The UniBalun is a PCB for building a lightweight antenna transformer (Balun) or impedance converter (UnUn) for low power radios. By soldering jumpers and a toroid core, you can create a 1:1, 1:4 Balun or 1:49, 1:9 UnUn. The latest revision (1.2) includes improved pads and (...)
mercredi 27 mars 2024
mardi 26 mars 2024
lundi 25 mars 2024
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Icom 706MK2G Repair
Radio Equipment/HF Transceivers/Icom IC-706 After years of reliable performance, a 26-year-old Icom 706MK2G exhibited an unusual deviation during FM transmission, with the actual frequency being 10kHz off from the displayed frequency. Additionally, the power meter showed a sharp dip during (...)
dimanche 24 mars 2024
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Top Amateur Radio Websites - Issue 2412
Space-Efficient Excellence: Inverted L Multi-Band HF Antenna, WSJT-X Controller, Introduction to HF Packeteering in the Modern Age, Emergency ham radio frequencies, AI Projections for Ham Radio Modes in 2023-2025, Yaesu ATAS-120A Portable Tripod: Enhancing Efficiency, Mapping the Australian (...)
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3 Element Quad for 50 MHz
Antennas/6M A 14.12 dBi gain three elements cubical quad antenna for the six meters band. This Quad Antenna design page include a MMA model available to download and dimensions for each element.
samedi 23 mars 2024
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Mastering HF Communication: Decoding Space Weather Data
Propagation/Beginner's Guide The article enlightens radio amateurs on utilizing real-time space weather data to optimize HF communication. Navigating through Hp30 index, MUF, f0F2, and eSFI metrics, it explains their significance in band selection and propagation forecasting. With essential (...)
vendredi 22 mars 2024
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Build a Simple VHF Dipole Antenna for 2 Meters: A Beginner's Guide
Antennas/2M This article serves as a beginner-friendly guide to constructing a simple VHF dipole antenna for 2 meters, perfect for novices in the hobby. With an emphasis on affordability and simplicity, it explains the basics without overwhelming technical details. Recommendations for coaxial (...)
jeudi 21 mars 2024
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Homebrew uSDX TRX
Technical Reference/Software Defined Radio The Homebrew uSDX SDR TRX is an experimental transceiver primarily designed for CW and Digital modes due to limitations in meeting FCC requirements for SSB. Developed from the QRP Labs QCX, it incorporates advanced SDR features while utilizing an 8-bit (...)
mercredi 20 mars 2024
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Prevention and Suppression of RF Interference to Audio Systems
Technical Reference/Radio Frequency Interference In this study, the author builds upon Muncy's research, demonstrating that radio-frequency current on cable shields affects audio systems through the "pin 1 problem" and shield-current-induced noise (SCIN). An enhanced equivalent circuit for (...)
vendredi 26 avril 2024
jeudi 25 avril 2024
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jeudi 11 avril 2024
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lundi 8 avril 2024
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lundi 1er avril 2024
dimanche 31 mars 2024
samedi 30 mars 2024
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jeudi 28 mars 2024
mercredi 27 mars 2024
mardi 26 mars 2024
lundi 25 mars 2024
dimanche 24 mars 2024
samedi 23 mars 2024
vendredi 22 mars 2024
jeudi 21 mars 2024
mercredi 20 mars 2024