• Top Amateur Radio Websites - Issue 2415

    Updated: 2024-04-19 08:03:37
    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,

  • Top Amateur Radio Websites - Issue 2414

    Updated: 2024-04-19 08:03:37
    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, CB0ZA Robinson Crusoe Isl DX Pedition,

  • Top Amateur Radio Websites - Issue 2413

    Updated: 2024-04-19 08:03:37
    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 Go-Box,

  • Top Amateur Radio Websites - Issue 2412

    Updated: 2024-04-19 08:03:37
    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 Radio Landscape, FT 1000MP MK V and Keyclicks,

  • Top Amateur Radio Websites - Issue 2411

    Updated: 2024-04-19 08:03:37
    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 Society

  • Automatic Roger Beep for VHF/UHF Contests

    Updated: 2024-04-19 00:02:55
    Technical Reference/HomebrewThis project details an automatic roger beep circuit for VHF/UHF contests. Built around a Microchip PIC microcontroller, the design detects PTT (Push-To-Talk) activation and generates a brief tone upon release, mimicking a "roger beep" to signal the end of transmission. The circuit utilizes readily available components and includes downloadable resources for PCB layout and firmware.

  • The Biggest Black Hole in the Milky Way Is 2,000 Light Years Away from Earth

    Updated: 2024-04-18 05:00:00
    Researchers have found the biggest black hole in our solar system. The black hole is located 2,000 light years from Earth.

  • Mini Whip - Active HF Antenna

    Updated: 2024-04-17 23:24:58
    Antennas/ActiveThe author investigated electric field antennas and achieved promising results with a shortened active whip antenna (30 cm). The findings suggest that at LF, active whips function primarily through electric field capacitance coupling.

  • CCXD Award

    Updated: 2024-04-17 23:24:58
    Operating Aids/AwardsThe CCXD Award (The Century Club of eXtreme difficulty is one of the most difficult awards to achieve. You are required to operate your home country from 100 DXCC countries. Founded in 2013, awards certificate is still awaiting presentation.

  • Vertical Dipole Array for 20-17-15 Meters

    Updated: 2024-04-15 23:10:42
    Antennas/PortableThis article explores the evolution of antenna choices for DXpeditions, focusing on the shift from mono-band VDAs to a multi-band solution. It details the design and construction of a lightweight, versatile 20-17-15m VDA, utilizing readily available materials like fishing rods and IKEA breadboards. The author discusses challenges, adjustments, and offers guidance for replication.

  • TX7W Raivavae, Austral Islands

    Updated: 2024-04-14 23:07:31
    DX Resources/DX Peditions/2024 DXpeditionsDX Pedition Austral Islands by Jeff Martin – K5WE, Craig Boyer – W5CCP April 2024

  • VDA Antenna for 30m

    Updated: 2024-04-13 23:05:49
    Antennas/30MThis project documents the construction and enhancement of a 30m Vertical Dipole Array (VDA) antenna inspired by Remco 7QNL article. Initial design utilized an 18m Spiderbeam pole and a 4m boom. Improvements included a lighter boom structure using fishing rods and a revised coaxial arrangement for enhanced mechanical stability.

  • QRP Cluster

    Updated: 2024-04-11 22:33:30
    DX Resources/ClustersQRP 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.

  • Could A Telescope Ever See The Beginning Of Time?

    Updated: 2024-04-11 16:00:00
    Since the 1800s, experts have clashed over whether our Stone Age cousins consumed their own kind for ritual purposes, or just for calories.

  • K4SWL Antenna Plus

    Updated: 2024-04-09 22:30:55
    Antennas/PortableThis 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 analyzer. Further field testing is planned for a future activation.

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