OOTA: Out On The Air
Any location. Any antenna. Any power.
OOTA

What’s new at DLARC
We have lots of new documents and movies from Milwaukee (Wisconsin) Radio Amateurs’ Club. The club has been diligent about documenting its history: they recently sent dozens of documents, images, and films.
Zero Retries

A visit to Italy’s Begali Keys factory
We accepted the offer and started our trip to Italy with a visit to Brescia, where the company has been producing keys for more than 60 years.
OnAllBands

AetherSDR
A Linux-native client for FlexRadio Systems transceivers.
ten9876

KJ4WLC Ham Dashboard
Real-time Amateur Radio data.
KJ4WLC

A short and maybe not-so-sweet HF antenna
A lot of information has been posted online recently about very short portable vertical antennas.
Ham Radio Outside the Box

My time with Pat…So far
My love for pat has only grown over the past couple of years that I’ve been using it. Why? Because it’s simple and incredibly versatile.
KC8JC

Hush
An Open Source alternative to VARA-HF.
Hush

Ham Clock CYD
A stand-alone device that could operate even if the internet is not available.
KC1ENS

ARRL is hiring
We are currently hiring for several impactful positions.
ARRL

ARDC is hiring
ARDC seeks a mid-to-senior-level Software Developer and Technical Writer.
ARDC

Video

Talking across the continent through the International Space Station
I tried a couple new antennas for dual-band satellite operations.
saveitforparts

Otis NP4G: Dayton Hamvention 2026 Amateur of the Year
A Puerto Rican orthodontist, DXpeditioner, and president of INDEXA who has spent years turning big radio dreams into real-world action.
Q5

2026 Hamvention Award Winners announced
Please join us in congratulating these very deserving winners.
Hamvention

FT0 digital mode
The next evolution in digital modes — featuring a 0-second sequence time.
FT0

LinHT hardware documentation
LinHT is an open-source handheld software-defined radio (SDR) transceiver built around a modern Linux System-on-Module and a true IQ RF front-end.
M17 Foundation

HamDash
Free and Open Source Ham Radio dashboard.
HamDash

Ten watts to Spain. Ten watts to Germany. Ten watts to Austria
The EFHW at 35 feet made all the difference.
David Saylors

Alliance Amateur Radio Network
Radio for those left out.
AARN

Is the CIA using radio to instruct Iran agents? Listen for yourself
An amateur sleuth thinks ghostly broadcasts are a revival of Cold War ‘numbers stations.’
The Times

DXtra FCC radio database explorer
We have computed Longley-Rice coverage maps for the entire US, Canada, UK and European fleets of FM stations. Also we have computed VOACAP coverage maps for most of the world’s HF.
DXtra

Installing an M17 Reflector on a cloud server
I document what worked for me after more than half a dozen attempts to build a working system.
EtherHam

Be gone pesky radials!
One of the biggest bugbears of portable operations in a public space when using a vertical antenna is having to lay out radials.
Ham Radio Outside the Box

MyHamStudyHub
The complete study platform for FCC Technician, General, and Extra class amateur radio licenses. No cost.
MyHamStudyHub

868MHz DX
This is 139m above sea level, with a clear line of sight across the Irish Sea to Cumbria, the Isle of Man, and the Mourne Mountains in Northern Ireland.
Real-World Amateur Radio

Video

2026 Hamvention Award Winners announcement video
Tim Duffy, K3LR, and Hamvention spokesperson Michael Kalter, W8CI announce the 2026 Hamvention Award Winners.
DX Engineering

Indiana Bill prohibits HOAs from restricting Ham antennas
A homeowners association may not adopt or enforce a regulation, rule, or other policy that has the effect of prohibiting a person from maintaining an Amateur Radio antenna on a property that the person owns, rents, or leases.
US7IGN

MFJ Documentary
Martin F. Jue: Life and Legacy. A documentary about MFJ Enterprises, ingenuity, legacy, and community.
Preston Booth Cinematography

Big numbers for POTA
Activity has grown substantially since 2023—roughly 40% overall.
POTA News & Reviews

ARISS beyond the ISS
ARISS is plotting a course to continue our mission in the government and commercial space realm beyond the targeted decommissioning of the ISS in the 2030 timeframe.
ARISS

Simple D-STAR transceiver uses inexpensive hardware
D-StarBeacon makes beacon-type functions possible on inexpensive hardware, instead of requiring a full-blown radio.
Hackaday

Mini-FT8
Mini FT8 on M5 Cardputer for portable operations.
AG6AQ

Satellite status and online tracker
This is a list of all amateur satellites and other sats of interest. It is also a simple online tracker.
AMSAT-SM

The ISS returns to S-Band
HamTV now transmitting color bars on 13 cm.
AMSAT-CA

New Farsi numbers station reported on 7910 kHz
According to the report, this new signal first appeared around the time of recent military strikes involving Iran.
SWLing Post

Rydberg atoms detect clear signals from a handheld radio
Scientists recover audio encoded in multiple public radio channels.
Phys.org

Canada to shut down its VHF weather radio service
Environment and Climate Change Canada cited increased costs and “more viable alternatives.”
RadioWorld

Video

K5ACP BNC antenna clip is just what I’ve been looking for
This is a sturdy MOLLE clip that we purchase and then add our custom designed BNC bracket.
Ham Radio Tube

Five Two Simplex Challenge
Call out on 146.52 MHz FM for 52 days and work together to generate more 2m simplex activity.
N2MAK

(Hobbies) Ham Radio
It’s become easier than ever to communicate with each other. Yet, there’s a beauty in understanding the simple forms of electronic messaging.
Not Just a Hobby

Inovato and N0LSR Design support and promote the OHB project
OHB public server keeps your HamClock running indefinitely.
N0LSR Design

Useful knots and applications for Radio Amateurs (PDF)
253 pages discussing ropes, knots, and their application within the Radio Amateur community.
PA3DJS

Fifty things you can do with a software defined radio
This project attempts to create GNU Radio flowgraphs for each of those items.
Onno VK6FLAB

Ham Radio Manifesto: From utility to creativity
The current approach to Amateur Radio, focused on communication and disaster relief, is no longer sufficient to attract today’s technical profiles.
F4JXQ

TPRFN launches live network views
Your real-time pulse on system performance.
TPRFN

KX2 battery capacity when charged from different voltage sources
I was curious to see how a lower charging voltage would correspond to capacity.
AE5X

Online museum tours and talks
You don’t need to travel the world to visit and enjoy many of the most impressive museums related to Ham Radio and radio communications.
Amateur Radio Events

Ham Radio Dashboard
Displays solar weather, band conditions, the 11 closest Ham Radio satellites, and data from PSK Reporter.
Andreas Peters

United States Bunkers on the Air
USBOTA joined the Worldwide Bunkers on the Air (WWBOTA).
USBOTA

The Last of the hybrids: Kenwood TS-830s
These transceivers aren’t “all-tube” in the boatanchor sense, nor are they fully solid-state like modern SDRs
Ham Radio QRP

Video

AMSAT discusses futureGEO
President Glasbrenner talks feasibility of a geostationary Ham sat.
AMSAT

The story of the Hams that founded Zenith
What happened to the factory that put a television in every American living room?
The Last Shift

FT2: The fastest digital mode ever created
3.8-second cycles — Complete QSO in 11 seconds. 4x faster than FT8.
FT2

Parks on the Air’s explosive growth and the next chapter
POTA is usually described in simple terms: It’s growing quickly.
Q5

BAOFENG UV-5R Mini: First impressions
These things are small. They are about the size of an FRS radio but feel a little more solid in the hand.
Random Wire

Anytone AT-D890UV full duplex satellite HT
This new HT should have real full duplex capability – it can transmit on VHF and receive on UHF without any desense.
AMSAT-SM

Zero Retries Digital Conference 2026 announced
ZRDC 2026 will be held on Friday 2026-10-16 at the Roundhouse Conference Center in San Ramon, California, USA.
Zero Retries Digital Conference

Worldwide Bunkers on the Air
WWBOTA is an exciting mix of Amateur Radio and history enabling radio amateurs to ‘activate’ with portable and mobile operations from historic bunker locations.
WWBOTA

SWR Magazine Waves Weekend
An on-air special event taking place on February 21, 2026. We will be activating KP3SWR from Puerto Rico.
SWR Magazine

RSGB: A year in numbers 2025
Amateur Radio continues to evolve and the RSGB, in turn, develops how it supports current radio amateurs and reaches out to new audiences.
Radio Society of Great Britain

WQ2XDM – New US experimental callsign for radio propagation tests
K9JMS recently received permission from the FCC to carry out propagation tests at 40 MHz (8m) and 70 MHz (4m).
EI7GL

Video

You should try Linux for Ham Radio today
It’s never been easier running Linux on a cheap laptop for Ham Radio.
Ham Radio Crash Course

The ultimate emergency comms trailer
A detailed tour of the brand-new Duval County ARES trailer.
KM4ACK

FT2 is the fastest digital mode ever created
With 3.8 seconds per tx/rx, this has been claimed to be the fastest digital mode to date.
Tech Minds

Indiana Amateur Radio license plate
New design for Indiana Amateurs.
ARRL Indiana Section

Amateur Radio Software Award nominations
Promoting software projects that enhance and adhere to the spirit of Amateur Radio: innovative, free and open.
Amateur Radio Software Award

Why I resigned after 12 years as assistant director of the ARRL Delta Division
This is a principle issue in my eyes.
K4FMH

Petition for Rulemaking response
The prohibition on encryption is a primary deterrent against the commercial use of amateur spectrum.
AC5A

ADRCS collaborates with TARPN on IP400 Project
This will extend the functionality of the IP400 network to conventional radios on the 2M, 220, and 450 MHz bands.
ADRCS

We’ve calculated all the views on the planet
Click on any point to show the longest line of sight at that location.
All The Views In The World

Practical guide to receiving HF weather fax
One of the most rewarding niches in the shortwave hobby.
DXR electronic Bits

Can you work DX on VHF & UHF?
Yes, you can.
OnAllBands

Trials & Errors #73: Playing at Radio
An ‘accidental’ journey into radio, born out of curiosity.
QRZ

Putting together a new ham starter package
Nudging a teacher to Tech after a historic school contact with astronaut Chris Williams.
K3LOE

SolarCdx.com
Solar weather insights for Hams.
SolarCdx.com

Amateur astronomers detect signal from Voyager 1 spacecraft
Voyager 1 is now 15 billion miles from Earth.
IFLScience

open-hamclock-backend aims to keep HamClock ticking
A group of Ham Radio operators have stepped up to keep HamClock operating beyond its scheduled sunset in June.
open-hamclock-backend

OpenHamClock
A real-time Amateur Radio dashboard for the modern operator.
OpenHamClock

Weekly Wednesday FSQ night
We will help stations new to the FSQ mode practice with relay and trigger commands, as well as answer questions regarding the mode in general and provide operating tips.
FSQcall

SETI@home
One of the most popular crowd-sourced research projects ever turned up some 12 billion signals of interest. A lengthy analysis found 100 worth another look.
UC Berkeley

3D print Moxon rectangle antenna
A simple OpenSCAD script you can use to generate a frame for a Moxon rectangle antenna and print it on your 3D printer.
Gaspode T. Wonderdog

Petition for Rulemaking: Encryption and Ham Radio
Permit limited use of cryptographic protection for certain Amateur emergency and resiliency communications.
FCC

Ampersand Linking Project
AllStarLink without the use of Asterisk.
Bruce MacKinnon

The best CHIRP file for SARnet
Select the channel covering the mile marker where you entered the highway, and press your channel ⬆️ or ⬇️ button at each suggested mile marker.
Playground Amateur Radio Club

Emergency Ham Network
A transformative approach to Amateur Radio’s future by creating a symbiotic relationship between licensed operators, students, and modern IoT technology.
EmergencyHam.net

BlueDV DV Radio
Supports multiple DV modes simultaneously (DMR, D-Star and Fusion).
PA7LIM

Video

The KJ6ER marauder antenna
A portable 2-element vertical Moxon.
K5OHY

Comparing the original Baofeng UV5R to the new Mini
Which has a better receiver? Which is better for packet/APRS radio?
KM6LYW