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. Efficiency, tuning ranges, and the innovative autotuning solution using a microcontroller are discussed, offering insights into overcoming the antenna's narrowband limitations.
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 import logs from existing logging programs via ADIF files. Available as freeware, it runs on Windows 2000 and later versions
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 QSO.
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 Crazy, How AI will affect Ham Radio, Wave talkers: Introduction to AI in Ham Radio, AI Meets Amateur Radio
ARRL Audio News February 16, 2024
ARRL Audio News February 16, 2024
ARRL Headquarters Closed Presidents Day
ARRL The National Association for Amateur Radio® Headquarters in Newington, Connecticut, will be closed on Monday, February 19, 2024, in observance of Presidents Day. There won't be any W1AW bulletin or code practice that day. ARRL HQ will reopen on Tuesday, February 20, 2024 at 8 AM EST. There are several special operating events to mark the holiday. Visit the ARRL Special Event Stations datab...
Amateur Radio as Educational Tool Represented to Policymakers in Washington DC
ARRL and Amateur Radio Digital Communications (ARDC) represented Amateur Radio at a symposium in Washington on February 1 at which the top domestic spectrum policymakers from across the federal government considered implementation of the National Spectrum Strategy (NSS) [PDF]. ARRL ensures that Amateur Radio is represented at sessions such as this so that decisionmakers understand amateur radio'...
Highlights from 2024 Orlando HamCation
Warm weather greeted the crowds of radio amateurs who attended the 2024 Orlando HamCation® from February 9 - 11. The convention hosted the ARRL Florida State Convention, but drew attendees from across the country, and some from even farther, renewing HamCation's place as the second largest US ham radio convention. HamCation is sponsored by the Orlando Amateur Radio Club (OARC). The convention wa...
Telescopic Fiberglass Antenna Pole Support Method
Antennas/Masts and mounts
Supporting a telescopic fiberglass antenna pole for ham radio operation. Rather than cumbersome methods like using angle iron or PVC pipes, author employs lightweight tent stakes, toggles, and paracord to secure the pole effectively. With careful knot tying and simple materials, he ensures rapid deployment and stability even in windy conditions, offering a practical solution for outdoor antenna setups.
Veteran DXpedition Leader Bob Allphin, K4UEE, SK
Prolific DXpedition leader, ARRL Maxim Society member, and former Chair of the ARRL DX Advisory Committee, Robert C. “Bob” Allphin, Jr., K4UEE, has become a Silent Key. Allphin passed on February 10 at the age of 79. His early life as the son of a United States Air Force (USAF) officer sent him to many corners of the globe. That set the tenor for a life in amateur radio spent operating from far...
Errata to the 2024 - 2028 Amateur Extra-Class Question Pool Released
The National Conference of Volunteer Examiner Coordinators (NCVEC) Question Pool Committee (QPC) has released errata for the new 2024 - 2028 Element 4 Extra Class Question Pool, which goes into effect on July 1. The errata includes minor question changes, the removal of one question, and one modified graphic. These updates are reflected in the new downloadable files, dated January 31, 2024. The...
Full size 80m End Fed Half Wave Antenna
Antennas/80M
The author reflects on expanding their antenna for 80m coverage during lockdown. They extend the End Fed Half Wave (EFHW) using a Spiderbeam pole and "cheating" by dog-legging across their garden. Despite challenges, they achieve coverage for multiple bands with minimal cost. Practical Wireless features EFHW antennas, including a pre-made 20m EFHW extended for 40m.
Senators Roger Wicker and Richard Blumenthal Introduce S.3690 to Eliminate Private Land Use Restrictions on Amateur Radio
On January 30, 2024, US Senators Roger Wicker (MS) and Richard Blumenthal (CT) introduced S.3690, the Senate companion bill to H.R.4006, introduced last June. Both bills reflect the Congressional campaign efforts by ARRL The National Association for Amateur Radio® to eliminate homeowner association land use restrictions that prohibit, restrict, or impair the ability of an Amateur Radio Operato...
WB7DZG Western oregon radio club inc.
The Western Oregon Radio Club operates Linked Amateur Radio repeaters in the Portland Oregon Area
ShortwaveDB Map
Shortwave Radio/Broadcasters
Worldwide Map of shortwave transmitters.
Based on shortwave schedule database, this website let you serarch using filters for broadcasts schedule and at the same time to diplay the transmitter map.
LogConv
Software/Log Converters
LogConv is a versatile utility designed to convert Amateur Radio log files between various formats such as ADIF, Cabrillo, CT9, CT10, EQF, and TR Log. It offers both GUI and Command line versions for user convenience. LogConv normalizes QSO data, breaking it into separate fields for better visibility. Additionally, it can extrapolate geographic information from contest exchanges, aiding in awards tracking
ARRL HQ Building will be Closed on Tuesday, February 13
Due to anticipated severe winter weather, ARRL’s administrative building in Newington, Connecticut, will be closed on Tuesday, February 13, 2024, for the safety of our staff. The Headquarters lobby & store, and W1AW will be closed to visitors on Tuesday. There will be no W1AW bulletins or code practice. ARRL will continue to serve members during normal business hours on Tuesday. Staff from acro...
CB0ZA Online Log
DX Resources/Logs
CB0ZA Log Online for Robinson Crusoe Isl DX Pedition IOTA SA-005 via clublog
4m Tall Vertical Dipole for 20m
Antennas/20M/20 meter Vertical Antennas
Constructed in May 2008, this innovative 4m tall electrically full-size halfwave vertical dipole, tunable to multiple bands, offers HF coverage despite its space-saving design. Inspired by cost-effective DIY alternatives, the antenna design departs from conventional center-fed approaches, utilizing asymmetrical dimensions. Despite resonance challenges, the antenna's performance remains viable, boasting broad bandwidth and adaptability, as demonstrated through SWR measurements and EZNEC predictions.
Top Amateur Radio Websites - Issue 2406
CQ DX World Map, Baluns and Ferrites Basics, Greencube (IO-117) Guide to Setup, Software and Operation, Baofeng UV5R TRRS Adapter, 2m Slim Jim portable antenna for SOTA, Scan and Showcase Your QSL Cards, DragonOS Focal , Tassie Scanner, LoRA Collinear Antenna, APRS via LoRa
Redwood Empire DX Association
A DX and Contest Minded Amateur Radio Club Serving the California Coast North of the Golden Gate Bridge
G4WIF End Fed Half Wave Antenna
Antennas/End-Fed
Opting for a visually appealing inverted L configuration, G4WIF anchors the End Fed Half Wave antenna to an old clothes line pole, seeking cost-effectiveness in their endeavor. Despite initial misconceptions about transformer components, a £7.95 investment in a T240-43 toroid and DIY mounting container resolves the issue. Reflecting on commercial alternatives, G4WIF's homemade solution proves both economical and sufficient for their amateur radio needs.
DIY EMC/RFI Mains Filter for a Clean Shack
Technical Reference/Radio Frequency Interference/Noise Reduction
Utilizing snap-on ferrite cores and practical insights, the author enhances their shack's cleanliness against electromagnetic interference. With meticulous experimentation and installation, they improve noise levels across HF bands, reflecting on the effectiveness of their filter in minimizing common-mode disturbances. Updates underscore ongoing refinement and cautionary advice for optimal filtering and radio reception amid changing RF environments.
Boondock Echo 2 way ham radio recorder
Software/Audio Recorders
Boondock Echo offers a revolutionary communication experience with an internet-backed recording and playback device for two-way radios. It ensures clear, reliable communication in remote or challenging conditions. Key features include real-time recording, internet connectivity, seamless integration, playback flexibility, rugged design, and a user-friendly interface. Services include product training, hardware maintenance and repair, customization, and regular firmware updates for optimal performance.
ARRL Audio News February 9, 2024
ARRL Audio News February 9, 2024
California Storms: Amateur Radio is Ready
Southern California continues to feel the effects of a significant rain event that began last week, bringing record rainfall, landslides, and hurricane-strength winds. The heavy rain is the result of two atmospheric rivers, referred to as "Pineapple Expresses" because of their origins near Hawaii. Nearly half a year's worth of rain has fallen in two days. Since Sunday, February 4, areas in Los ...
Amateur Radio Goes to High School in New York City
Staten Island Technical High School is the first New York City school to receive a grant from ARRL. ARRL Education and Learning Manager Steve Goodgame, K5ATA, said ARRL is working with the school in several ways. "We are working with them to build and equip an amateur radio station, to test and license students, and to put [science, technology, engineering, and mathematics (STEM)] kits in the cl...
World Radio Day
World Radio Day 2024 will be on February 13, and this year's theme is, "A Century Informing, Entertaining and Educating." World Radio Day was first celebrated in 2012, following its declaration by the United Nations Educational, Scientific and Cultural Organization (UNESCO) General Conference. It was subsequently adopted as an International Day by the United Nations General Assembly. Amateur rad...
Exploring the Spectrum From HF to UHF Frequencies
Propagation/Beginner's Guide
During radio's early days, high frequencies were under 30 MHz due to technical limitations. As understanding grew, components improved, allowing for higher frequencies like VHF and UHF up to 3 GHz. The HF band's long wavelengths provide unique propagation challenges influenced by solar activity. VHF and UHF bands face diffraction and reflection issues but offer diverse applications, from amateur radio to 5G and GPS technologies.
CB0ZA Robinson Crusoe Isl DX Pedition
DX Resources/DX Peditions/2024 DXpeditions
Robinson Crusoe Island DXpedition February 10-24, 2024 Grid Square FF06 – IOTA SA-005
Building an Enhanced APRS IGate with Debian 12 and Raspberry Pi
Technical Reference/APRS
The guide outlines necessary components, including a 2m FM analog radio, USB audio adapter, and Raspberry Pi. Building a cable to connect these elements is assumed, as is knowledge of Raspberry Pi OS installation.
Tuscaloosa Amateur Radio Club
The hams of Tuscaloosa have been serving the community since 1931
Innovative 2m to HF Converter
Technical Reference/Transverters
Ulrich L. Rohde N1UL conceived an outstanding 2m to HF receiving converter with specific requirements, including 144-148MHz to 28-32MHz coverage, low noise, high IP3, and a unique modular design. The design decisions emphasize modularity, absence of preselection, stability, and a passive mixer, showcasing Rohde's distinctive approach.
Antennas for QRP Operation
Operating Modes/QRP
Antennas for low-power operation resemble those for 100W use. Minor adjustments, like capacitor voltage ratings, may apply, but basic principles persist. Portable antennas, notably Backpack Antennas for weight-conscious setups, hold relevance beyond QRP. While some antennas function acceptably at higher power, efficiency issues arise at QRP levels. Testing antennas at 100W exposes weaknesses, particularly in tuners, crucial for efficient QRP operation.
Adapting Standard Headset Mic for Yaesu FT-8900
Technical Reference/Mic wiring
Explore the process of creating a custom adapter for the Yaesu FT-8900 radio with a non-standard mic port. The article guides users through understanding the reversed pin-out of the RJ-12 connector on the 8900, providing a detailed circuit for adapting the voltage for electret-based mics. With a list of required parts and construction tips, this DIY project ensures seamless compatibility with standard electric headset mics.
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