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



mercredi 27 mars 2024

mardi 26 mars 2024

  • ARJAN-5 5 band SDR
    Technical Reference/Software Defined Radio This project enhances Arjan te Marvelde's uSDR-pico by integrating a waterfall display feature. By adding an ILI9341 240x320 2.4" TFT display and modifying the software, the goal is to provide a panadapter to the existing transceiver. Initially (...)

lundi 25 mars 2024

  • 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

  • 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 (...)

  • 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

  • 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

  • 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

  • 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

  • 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 (...)

mardi 19 mars 2024

  • Chokes and Isolation Transformers for Receiving Antennas
    Antennas/Receiving Chokes and isolation transformers are essential for receiving antennas to mitigate common mode current, which induces noise and interferes with signal quality. Common mode chokes, formed by winding feedline through ferrite cores, block unwanted current effectively. Proper (...)

lundi 18 mars 2024

  • Measured Data For HF Ferrite Chokes
    Technical Reference/Components/Toroids FT-240 toroids measurements. The data was measured using well-calibrated HP instrumentation. All plots have been adjusted to a frequency range of 1-100 MHz on the horizontal axis and a resistance/impedance range of 10-1,000 ohms on the vertical axis. This (...)

dimanche 17 mars 2024

  • A52CI A52P Bhutan DX Pedition
    DX Resources/DX Peditions/2024 DXpeditions SP9FIH as A52P and SP6CIK as A52CI fm Dochula Bhutan ; 40-6m; SSB CW + digital 19th April till 4th May 2024

  • 6O3T Somaliland 2024
    DX Resources/DX Peditions/2024 DXpeditions DX Pedition to Federal Republic of Somalia 2024

samedi 16 mars 2024

  • Top Amateur Radio Websites - Issue 2411
    Portable Half-Square Antenna, The Squid Pole Wire Antenna Re-visited, 50 MHz 300W Power Amplifier, TX5S Clipperton 2024, TX5S Log Online, Efficient 2-Element Quad Antenna for 2m, Propagation on 630 Meters and 2200 Meters, N1FD Nashua Area Radio (...)

  • Vertical bazooka antenna for the 40m
    Antennas/40M/40 meter Vertical Antennas A quarter wave vertical omni-directional antenna for 7 MHz. Formulas for dimensions in feet and meters are provided. Ideal radial angle is between 35° and 45°. Velocity factor (Vf) varies based on coax (...)

vendredi 15 mars 2024

  • T32EU Online Log
    DX Resources/Logs On-Line log for T32EU DX Pedition to East Kiribati OC 024

jeudi 14 mars 2024

  • A Simple Morse Code Project: The Tiny Keyer
    Technical Reference/Arduino/Morse Code In his journey to improve Morse code skills, the author developed a straightforward device named the Tiny Keyer using Arduino. Tailored for Morse code enthusiasts and ham radio operators, this project utilized the budget-friendly Arduino ATTiny 85 (...)

mercredi 13 mars 2024

  • Ham Radio Frequencies
    Ham Radio/Band Plans This guide explores different radio bands that hobbyists use to talk to each other worldwide. It explains how these bands work and what they're used for. From low-frequency to high-frequency bands, each has its own unique features for people who enjoy communicating through (...)

mardi 12 mars 2024

  • WSJT-X 2.7.0 Release Candidate 4 available
    WSJT-X 2.7.0 Release Candidate 4 has been officially made available to the public. This RC version brings improvements primarily aimed at Fox-mode operators and enhancements to the QMAP companion program.

  • Spectrogram
    Software/Spectrum analyzers Spectrogram, a PC-based audio frequency spectrum analyzer available from Visualization Software, aids ham radio enthusiasts in aligning receivers like Elecraft K2. Versions are downloadable, with an intuitive interface and customizable parameters. Tutorials by (...)

lundi 11 mars 2024

  • T32EU East Kiribati
    DX Resources/DX Peditions/2024 DXpeditions 13th until 27th March 2024, Kiritimati OC 024, CW and SSB and RTTY and FT8 DX Pedition

dimanche 10 mars 2024

  • Top Amateur Radio Websites - Issue 2410
    Field-Tested VP2E Antenna, 3 Band Mono Loop Portable Quad, VHF Repeater with a Raspberry Pi, DIY Tree Antenna Launching: Cheap and Effective, OpenRTX, Wire on the Ground: Portable Radio Success with Grasswire Antenna, LoRa APRS Tracker or Igate on 433Mhz, IARU Region 2 (...)

  • Hamstick Experimentation: A Day of Surprising Results
    Operating Modes/Portable Operations In his POTA activation, WK4DS experimented with radials for hamstick antennas. Despite sun and RF noise challenges, successful connections were made. Surprisingly, tuned radials proved unnecessary, simplifying setup. Hamsticks demonstrated versatility across (...)

samedi 9 mars 2024

  • Optimizing TX/RX Levels in WSJT-X
    Operating Modes/FT8 Exploring digital radio modes, the author rethinks how to adjust transmit and receive levels in WSJT-X. Despite effective communication using Yaesu's settings, a new procedure aims for better performance. For RX, set audio device levels to 100%, disable AGC, and adjust RF (...)

vendredi 8 mars 2024

  • Automatic Magnetic Antenna Tuner
    Antennas/Magnetic Loop A Magnetic Loop Antenna is a resonant circuit employing a large inductor and adjustable capacitor. Efficiency depends on the inductor's size relative to wavelength. A Magnetic Loop Controller adjusts antenna tuning in real-time, syncing with Transceiver VFO movements. It (...)

jeudi 7 mars 2024

  • Versatile Field Radio Kit
    Operating Modes/Portable Operations Alan (W2AEW) shares his comprehensive portable field radio kit, showcasing various antenna options and accessories for POTA activations. The kit, housed in a repurposed camera bag, features the Elecraft KX2 Shack a Box, AX1 antenna kit, and additional (...)

mercredi 6 mars 2024

  • Building Your HF Packet BBS: Linux Packeteering
    Operating Modes/Packet Radio The guide details setting up a comprehensive HF packet BBS using linBPQ on a Raspberry Pi. Exploring linBPQ's versatility and community support, the author emphasizes its legality considerations and cross-platform accessibility. Configuration files for linBPQ, (...)

mardi 5 mars 2024

  • K6MM 160m Antenna Modifications
    Antennas/160M After a storm damaged the antenna, W6AER replaced it with a pre-made capacitance hat from DX Engineering. Using hose clamps and conductive grease, he ensured durability. Experimenting with radials and a coil, he aimed for better performance and (...)

lundi 4 mars 2024

  • Top Amateur Radio Websites - Issue 2409
    Mini Satellite-Antenna Rotator Mk1, Receiving NOAA Weather Satellite Images, Online LInked Dipole Designer, How to use AI to identify Radio signals , LoRa in Amateur Radio, Moxon Mania - Building the Ultimate 4-Band Moxon Antenna, Python Telegram bot for QRZ.com (...)

  • DIY Portable Car Whip Antenna
    Antennas/Mobile Being frequently away from home, the author owner of an Elecraft KX3 missed the opportunity to work /M. They devised a portable antenna solution, incorporating a coil and car body, enabling multi-band tuning. Despite its unconventional design, the antenna exhibits promising (...)

dimanche 3 mars 2024

  • Down East Microwave Inc
    Manufacturers/Transverters Manufacturer of 50MHz, 70MHz, 144MHz, 222MHz, 432MHz, 900MHz or 1.2GHz transverters and VHF UHF amplifiers

samedi 2 mars 2024

  • TX5XG Austral Islands
    DX Resources/DX Peditions/2024 DXpeditions TX5XG DXpedition to Austral Islands March 27, April 3 2024

vendredi 1er mars 2024

  • Mountain QRP Club Italy
    Ham Radio/Clubs/Technical Specialty/QRP Clubs Official web site of the Mountain QRP Club Italy

  • Tuning OCF L-Dipoles
    Antennas/OCF The behavior of a straight dipole and its L-form is examined in terms of impedance and SWR. By adjusting the feed point or bending angle, impedance variation is observed. Impedance shifts symmetrically as the feed point deviates, leading to recommendations for optimal ratios. Model (...)

jeudi 29 février 2024

mercredi 28 février 2024

  • H40WA Temotu DX Pedition
    DX Resources/DX Peditions/2024 DXpeditions Temotu 2024 DXpedition February 22nd, 2024 - March 7th 2024.

mardi 27 février 2024

  • bcTool
    Software/Radio Programming bcTool is made to be an easy app. It helps you program, control, keep records, and set up your Uniden Bearcat Dynamic Memory Scanner. With bcTool, you can: Set up all your scanner settings easily, like broadcast screens and searches. Quickly see what your scanner has (...)

lundi 26 février 2024

  • Reliable Emergency Power: Solar Solutions
    Technical Reference/Alternative Power In a quest for reliable emergency power, the article discusses the necessity of accessible power solutions amidst blackouts and energy crises. It introduces the American-made Merlin Panther 100-watt solar briefcase and budget-friendly LiFePO4 batteries. The (...)

dimanche 25 février 2024

  • Hostilog
    Software/Logging Hostilog is a logging program for HamRadio it uses a very easy way to enter qso data without any usage of a mouse. You can enter around 300 to 400 QSOs per hour from a paper written logbook, which is really quick compared to other logging programs. Combining and sorting of ADI (...)

samedi 24 février 2024

  • Top Amateur Radio Websites - Issue 2408
    Ribbit digital text messaging mode for HF/VHF/UHF , Building a Raspberry Pi Satellite Tracker Interface, Raspberry Pi Pirate Radio, Arduino Digital Transceiver Project, M17 digital radio protocol for data and voice, HamXposition,

  • IQ Output for the Elecraft KX2
    Radio Equipment/HF Transceivers/Elecraft KX2 Adding an IQ Output to the Elecraft KX2 Transceiver

vendredi 23 février 2024

  • Mastering Magnetic Loop Antenna Control
    Antennas/Magnetic Loop Unveil the secrets of efficient Magnetic Loop Antenna control systems, eliminating the hassle of frequent retuning. With real-time tracking and compatibility with various transceivers, including popular models from Elecraft, ICOM, Kenwood, and Yaesu, this controller (...)

jeudi 22 février 2024

  • W2LCW Long Island CW Club
    Ham Radio/Clubs/North America/USA/New York Established in 2018, the Long Island CW Club aims to revitalize Morse Code (CW) usage among amateur radio operators. Despite the FCC's removal of CW as a licensing requirement, the club observes a growing interest in learning and mastering the code. (...)

mercredi 21 février 2024

  • DXTRON DX Cluster
    DX Resources/Clusters Web DX Cluster provided by QRZCQ web site.

  • 8R7X Log Online
    DX Resources/Logs 8R7X Guyana 2024 online log provided by clublog

mardi 20 février 2024

  • Evolution of Car Radios: From Marconi to Motorola
    Operating Aids/History his historical account traces the development of car radios from Marconi's mobile wireless telegraph station on a steam engine vehicle in 1901 to Motorola's iconic car radio models in the 1930s. It highlights key milestones such as Alfred Grebe's radio-telephone (...)

lundi 19 février 2024

  • Magnetic Loop Antenna Builds and Autotuning Advancements
    Antennas/Magnetic Loop Explore two magnetic loop antenna constructions, utilizing a 6-foot and a 12-foot square loop. Accompanied by a detailed description, the 6-foot loop features a built-in stepper motor control circuit, while the 12-foot loop incorporates a separate loop controller. (...)

dimanche 18 février 2024

  • FISTS Log Converter
    Software/Log Converters FISTS Log Converter simplifies various tasks for amateur radio operators. It aids in tracking FISTS Awards, submitting applications, and creating logs for FISTS Activities in Europe like the Ladder and EuCW Snakes & Ladders. Users can generate callsign checklists and (...)

samedi 17 février 2024

  • Top Amateur Radio Websites - Issue 2407
    Durable 2-Meter Yagi Antenna: PVC and Window Line Construction, APRS LoRa Weather Station , The CW Flea: Modern Morse Transmitter with Arduino, TxTopper QRP Amplifier, Enhancing Performance with a Cage Dipole for Six Meter Band, AI-Powered Radio Signal Cleanup: Battling QRM in Real Time, Ham (...)

  • MorsePractice
    Software/Morse Code Training MorsePractice is a Java application originally written by Martin Minow (K6MAM) as an aid to learning Morse code. With morse practice you can select the digits you want the app to be transmitted. Additionally can be selected a random phrase, or random (...)

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