• Top Amateur Radio Websites - Issue 2403

    Updated: 2024-01-31 22:43:09
    Delta Loop vs End Fed Half Wave on 20m , The CW Typewriter: A Morse Code to ASCII Converter, Comparing Mobile whip versus EF HW Vertical , FT-817 Audio Speech Compressor: Boosting Signal Power with SSM2165, Yaesu FT-857 Repair: Tackling a Sense Wire Issue, Antenna Manufacturing: How to Prevent Galvanic Corrosion, A mobile radio installation,

  • Top Amateur Radio Websites - Issue 2402

    Updated: 2024-01-31 22:43:09
    Enhancing Performance with W8JK/MOXON Antenna Variant, 40m QRO End Fed Half Wave Antenna Coupler, 40 MHz 8m Band Amateur Radio Exploration, Unearthing VHF Contest Secrets: An In-Depth Analysis, QRP Balun: A DIY Project , 70Mhz (4 metre) Delta Loop Antenna, Yaesu VR-120 Memory Manager,

  • Ham Radio Frequencies

    Updated: 2024-01-31 22:43:09
    Amateur radio enthusiasts utilize specific frequency bands allocated globally for communication. From Low Frequency (LF) to Very-High Frequencies (VHF), each band has distinct characteristics and propagation conditions. Frequency allocations vary by country and ITU region. Understanding band usage and regulations is crucial for effective communication among ham radio operators worldwide.

  • Building a Robust PL519 Tube HF Amplifier

    Updated: 2024-01-30 02:37:16
    Technical Reference/Amplifiers/HF Amplifiershis article explores the construction of a PL519 tube amplifier, utilizing Ulrich L. Rohde N1UL's insights. Focusing on a modest 25W continuous output, the design ensures robustness with forced air cooling. The detailed breakdown covers input matching, screen grid voltage generation, bias adjustment, anode power supply, heater power supply, and monitoring circuitry, providing valuable guidance for ham radio enthusiasts.

  • Emergency ham radio frequencies

    Updated: 2024-01-30 02:37:15
    Operating Aids/Radio SpectrumThese frequencies have been adopted into the bandplans of each IARU region to be a focus for emergency communications in their areas. They are not absolute frequencies but instead are centres of activity and emergency communications may be found around 20kHz from these centres. Some countries may maintain other emergency frequencies in their own bandplans due to local requirements, QRM etc

  • Mapping the Australian Radio Landscape

    Updated: 2024-01-29 02:16:49
    Ham Radio/DemographicsDiscover a comprehensive solution for mapping Australian ham radio entities using data from the ACMA Public Register. This tool, developed in Delphi 7, generates KML files for Google Earth, showcasing repeaters, beacons, and operators across different prefixes. While respecting privacy regulations, the files provide valuable insights into the amateur radio landscape.

  • Yaesu ATAS-120A Portable Tripod: Enhancing Efficiency

    Updated: 2024-01-28 02:13:02
    Antennas/PortableIn this post by N6CTA, discover the conversion of the Yaesu ATAS-120A screwdriver antenna for portable use. The author details the creation of two sets of radials, 16 and 32 in 16ft lengths, aiming to optimize the efficiency of ground-mounted antennas. Additionally, insights are shared on attaching male quick disconnect blade tabs, with potential plans for a radial plate kit.

  • AI Projections for Ham Radio Modes in 2023-2025

    Updated: 2024-01-26 02:07:04
    Technical Reference/AI Ham RadioIn an innovative analysis, Michael G7VJR employs NeuralProphet to predict ham radio modes' usage trends. The AI model, leveraging deep learning, forecasts a steady FT8 dominance, with slight declines in CW and Phone activities. This approach simplifies statistical predictions, showcasing the power of AI in understanding complex patterns and facilitating insightful time series projections. Access the freely available Club Log data for continuous exploration.

  • Introduction to HF Packeteering in the Modern Age

    Updated: 2024-01-24 02:01:33
    Operating Modes/Packet RadioA brief overview of the current state of packet radio on the HF bands. In this comprehensive guide, the author navigates through HF packet radio, providing insights on the required equipment, protocols like Fx.25 and IL2P, and preferred ACDS segments. The post covers decoding and sending traffic, delving into optimal settings, recommended software, and common SSIDs. The author concludes by encouraging further exploration through additional reading and a Linux Packeteering series.

  • The Oldest Black Hole Could Wreak Havoc on a Faraway Galaxy

    Updated: 2024-01-17 17:00:00
    Most black holes follow a similar pattern of development, but the oldest black hole ever observed shows how the space spectacles could mature in different ways.

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