OpenRTX
Operating Modes/Digital Modes
OpenRTX is a free and open source firmware for digital ham radios. The firmware is designed with a top-down approach with the objectives of modularity, flexibility and high performance. Currently, it targets some Tytera Radioddity Baofeng digital radios
K5ZRO Vicksburg Amateur Radio Club
Our purpose is to further the hobby of Amateur Radio and to benefit the community with our communications expertise in times of need.
Wire on the Ground: Portable Radio Success with Grasswire Antenna
Antennas/Wire
The author shares a unique experiment with a 200ft Grasswire antenna—laying wire directly on the ground. Despite inherent losses, the setup enables successful radio communication with a Kentucky station, highlighting the antenna's practicality for portable use with minimal power.
Python Telegram bot for QRZ.com lookups
Software/Developer Resources
This is a Telegram bot written in Python that does ham radio call sign lookups via QRZ.com. This bot requires a paid QRZ.com account with XML access, in order to use the QRZ.com lookup feature of this bot
a token for a Telegram bot
Moxon Mania - Building the Ultimate 4-Band Moxon Antenna
Antennas/Moxon
The article details the design and construction of a four-band Moxon beam by a radio amateur. The beam, mounted atop a rooftop tower, aimed for gain over a dipole on 20 meters, cost under $500, and included additional bands. The design features fiberglass spreaders, four bands (20/15/10/6 meters), and a single feedpoint. The construction involved computer modeling, NEC source code, and specific dimensions. The article outlines the assembly, materials, and tuning process, including in-situ adjustments for optimal performance. Despite initial challenges, the beam improved signal strength and facilitated contacts on multiple bands, marking it as the best HF antenna the author has owned.
Top Amateur Radio Websites - Issue 2401
USB-C charging for Handheld Radio Transceivers, TEFV Terminated End Fed Vee Antenna, Choosing the Right Aluminum Stock for Antenna Building, SNASharp, DIY 1KW Dummy Load, Skywave Linux, Analyzing SSB Signal Quality in CQ WW Contest, Arduino Iambic Keyer
ARRL Audio News January 5, 2024
ARRL Audio News January 5, 2024
ARRL Kids Day in on January 6!
Twice a year, ARRL offers an event designed to promote amateur radio to youth. On ARRL Kids Day, which will be held this year on January 6, 2024, you can share the excitement with your own kids, grandkids, a Scout troop, a church, or the general public! ARRL Kids Day is designed to give on-the-air experience to young people and to foster interest in getting a license of their own.. It is also i...
HamSCI 2024 Workshop
Ham Radio Science Citizen Investigation (HamSCI) will hold its sixth annual workshop on March 22 - 23, 2024, at Case Western Reserve University in Cleveland, Ohio. The event is meant to bring together the amateur radio community and professional scientists. The 2024 workshop's theme will be "Alignments" - specifically those between the Sun, Moon, and Earth; collegiate amateur radio recreation an...
G7SYW
Personal amateur radio pages, software for use with ham radio, QSL cards online
LoRa in Amateur Radio
Technical Reference/LoRa and LoRaWan
About LoRa, wireless communication technology designed to transmit data over long distances. LoRa provides a means for wireless data transmission over long distances with low power consumption. Practical applications of LoRa in amateur radio
Online LInked Dipole Designer
Antennas/Antenna Calculators
The page for designing linked dipole antennas allows users to swiftly create a versatile multi-band antenna suitable for portable applications in outdoor settings, such as in the field or on mountain tops.
Receiving NOAA Weather Satellite Images
Operating Modes/Satellites/Weather Satellite
Receiving NOAA weather satellite images using a Raspberry PI with a RTL dongle and a Turnstile crossed dipole automatically.
WSJT-X 2.7.0 Release Candidate 3 available
WSJT-X 2.7.0 Release Candidate 3 has been officially made available to the public. This RC version implements some new features and several bug fixes.
How to use AI to identify Radio signals
Technical Reference/AI Ham Radio
How to use AI (Artificial Intelligence) to identify Radio signals using a RTL SDR dongle and Linux (Ubuntu). This solution implement a framework using Keras and TensorFlow to learn and recognize the RF signals.
Ribbit digital text messaging mode for HF/VHF/UHF
Operating Modes/Digital Modes
Ribbit is a novel digital text messaging mode for VHF/UHF communications for recreational and emergency use which radically increases the density of information transmitted by spectrum used. It leverages the computing power of the modern smartphone to increase the capabilities of any Handy Talkie without requiring any additional hardware or cable. A Ribbit message is fixed in duration at 1250 milliseconds. It is sent over audio modulation with a 2kHz bandwidth centered on 1.5kHz. It is preceded by 400ms of white noise to open analog squelch circuits.
Raspberry Pi Pirate Radio
Technical Reference/Raspberry Pi
In this tutorial, the author shows the basics of how to set up a Raspberry Pi Pirate Radio utilizing the FM Transmitter software and a piece of wire.
Top Amateur Radio Websites - Issue 2352
Yaesu FT-891 Go-Box for POTA, Ham Radio And the Art of Bushcraft, RF Choke with Bifilar Windings, Arduino Repeater Controller, PCM Kestrel HF Transceiver, Stingray Marine Transceiver,
Building a Raspberry Pi Satellite Tracker Interface
Technical Reference/Raspberry Pi
This article provides a step-by-step guide for assembling a Raspberry Pi-based Satellite Tracker Interface, designed to work with Green Heron Engineering's RT-21 controllers and MacDoppler software. The guide covers hardware assembly, SD card image installation, and system configuration for satellite tracking.
HamXposition
Ham Radio/Hamfests
Northeast HamXposition, Marlboro MA (formerly Boxboro)
ARRL's Year of the Volunteers Success
2023 has been a remarkable year for amateur radio. There were many noteworthy opportunities for hams to use their license privileges for the greater good. An annular solar eclipse saw radio amateurs engaging in projects of scientific research about our ionosphere, devastating firestorms gutted entire cities and saw Amateur Radio Emergency Service member-volunteers rise to activate, hurricanes t...
M17 digital radio protocol for data and voice
Operating Modes/Digital Modes
M17 is a community of open source developers and radio enthusiasts. We are building understandable systems in support of the hackers and experimenters' history of ham radio. M17 is developing open source hardware, software, and offers a complete digital radio protocol for data and voice, made by and for amateur radio operators.
M17 voice mode uses the free and open Codec 2 voice encoder.
The Best Amateur Radio Links of 2023
A collection of the best new amateur radio links we reviewed in 2023
Arduino Digital Transceiver Project
Technical Reference/Arduino
Arduino Digital Transceiver (ADX) is a low-cost HF transceiver for digital modes. This Arduino-based project, inspired by QDX, features four bands, including 80m and 20m, supporting FT8, FT4, JS8call, and WSPR. Designed for simplicity and affordability, it uses an Arduino Nano, SI5351 module, and CD2003GP receiver. The ADX project emphasizes easy procurement, construction, setup, and operation, making it an accessible option for QRP enthusiasts. The firmware update enhances functionality, including CAT control support.
ARRL Straight Key Night 2024
ARRL The National Association for Amateur Radio® Straight Key Night (SKN) is held on January 1, 2024, from 0000 UTC through 2359 UTC. Many hams look forward to SKN as one of the highlights of their operating year. Operators participate using Morse code (CW). All you need is your favorite straight key or bug. Many participants dust off vintage radios and keys and put them back into service e...
Yellow Thunder ARC
Ham Crazy
Shopping and Services/T-shirts
HamCrazy provides various personalized hats, name badges, those light up call sign displays, decals for cars, even case plates for Apache cases
VOTA: Badges on the Air
Join all of ARRL The National Association for Amateur Radio®'s volunteers on December 31, 2023, from 0000 - 2359 UTC, for the last day of the yearlong Volunteers On the Air (VOTA) operating event for your final chance to get some VOTA points. Last week's Red Badges on the Air for VOTA was a hit, and ARRL wants to do one final push to cap off the year of operating that acknowledged and honored ...
AI Meets Amateur Radio
Technical Reference/AI Ham Radio
CQ Amateur radio 2019 article analyzing possible impacts of Artificial Intelligence in Amateur Radio operations. How to integrate AI in the radio shacks.
ITU Synergizing AI and Radiocommunications for Smarter Connectivity
Technical Reference/AI Ham Radio
Explore the pivotal role of artificial intelligence in advancing emerging radio technologies, facilitating ubiquitous connectivity essential for sustainable development, the digital economy, and the Internet of Things, guided by ITU's harmonized regulations and standards.
Wave talkers: Introduction to AI in Ham Radio
Technical Reference/AI Ham Radio
WaveTalkers asked AI itself what it thought. All of the content in the WaveTalkers AI Resources section is generated by AI. From the content to the code itself they will make every effort to showcase what works and what doesn't along the way.
AI-Powered Radio Signal Cleanup: Battling QRM in Real Time
Technical Reference/AI Ham Radio
Amateur radio enthusiast Jean-Paul Suijs discusses combating manmade noise (QRM) in radio signals using AI. Detailing experiments with phase-shifting techniques and the self-learning nature of AI, he explores AI-based audio processing apps for real-time noise cancellation during radio contests, demonstrating results on both medium wave and shortwave bands.
How AI will affect Ham Radio
Technical Reference/AI Ham Radio
A blog post about experimenting AI on writing blog post and creating pictures. This page includes also a youtube video by VE4VR experimenting ChatGPT over ham radio bands.
Top Amateur Radio Websites - Issue 2351
HB9CV Online Antenna Calculator, Make your own 40/80 Dipole, Yagi Uda Antenna Online Calculator, Digital Modes with Yaesu FT-817, Modified Ground Plane Antenna Adds Second Band, MUF(3000)F2 Plots, Half-Size 6 meter J-antenna, International SWL DX Contest 2023,
Status of CQ Magazine
ARRL® has heard from many members concerned about their print subscriptions to CQ magazine. CQ magazine is not an ARRL publication, however ARRL members enjoy the ability to pursue earning the CQ Worked All Zones (WAZ) and Worked All Prefixes (WPX) awards through Logbook of The World (LoTW). CQ Editor Rich Moseson, W2VU, acknowledged the delays in delivering CQ magazine. He indicated that the No...
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