FCC Ham “Call Book” in PDF and CSV formats
The call book supports Ham Radio enthusiasts who suffer little-to-no internet bandwidth while chasing QSOs — or when your favorite search site goes down for (un)scheduled maintenance.
Playground Amateur Radio Club

Amateur Radio has never been more affordable
So why do some things seem so expensive?
QRPer

Ragchew Lounge
A relaxed place where operators can drop in, meet other hams, have a chat and make new radio friends from around the world.
avelichat

The very last new commercial AM radio station in the USA
Here’s what we should do next.
Off Grid Ham

OMD — Optical Modem
33 KB/s file transfer via light, adaptive OFDM with per-carrier bit loading, zero-install browser receiver.
Muggy86

An Outside the Box look at the 48 inch base loaded vertical antenna
It’s not the smartest idea really is it?
Ham Radio Outside the Box

Email QSLs: Sense or nonsense?
Let me lay out the pros and cons.
DB4SCW

At last! FT8 on iPad & iPhone
It’s a great experience with Greyline FT8 and Digirig Lite.
Andrew Woodward

The signal never died
Peter I, Bouvet, and the operators who carried DX forward.
KA3DRR

New Jersey Amateur Radio plates
Photos of NJ Ham Radio license plates going back to 1959.
moini.net

Four Days in August (Hunstville)
These are hands-on, conversational, bring-your-own-questions gatherings focused on doing the thing, solving the problem, and sharing what actually works in the field.
Temporarily Offline

Video

Cootie-style single paddle CW key
A compact portable single paddle key with a sideswiper style lever, tight action, and small contact spacing.
W4ARB

VARA Winlink email speeds with Mercury HF
Special thanks to KO0OOO for hosting possibly the first Mercury HF Winlink server.
KM6LYW

Morning Morse Code in the Alberta Badlands
Join me for a Sunday morning 3-park rove in the Badlands of Southern Alberta Canada.
VE6LK

Breaking – OFDM-AB – IP400 Refactored
The Amateur Radio data communications revolution of the 21st century.
Zero Retries

Geographic analysis of US Amateur Radio licenses using FCC and Census data
Where have new grants grown over the past X months? Do older counties have higher ham density? (ecological correlation)
KK4SW

Amber Silver Alert net Program (ASAP)
How about passing traffic from field deployed amateur operators to local law enforcement about the status and progress of an AMBER alert search team?
KF5THB

ZRDC 2026 registration now open
This year’s conference will bring together Hams and people interested in the technological innovations in Amateur Radio to explore and listen to expert speakers, regarding various topics pertinent to digital communications.
Zero Retries

How to become a Radio Amateur
When you discover a good thing it’s human nature to want to share it with others.
KE9V

Choosing FT8 frequency & interval on 6 meters
There are behaviours that are unique to 6 meters due to the unique character of DX propagation.
Pattern and Match

bkjbbs
Packet radio BBS, KISS, and AX.25 library for Node.js.
jfedyczak

If your cell phone doesn’t work during a disaster, ‘Look for the houses with an antenna’
The West Contra Costa Emergency Radio Group, founded in 2018, has grown to include dozens of members in multiple cities who have the technology to communicate during emergencies.
Richmondside

My radio club asked me to assemble and evaluate their new Hustler repeater antenna
Anybody who may aspire to build their own 3-element stacked 5/8-wave 2-meter antenna will find this material valuable.
K8EBR

cw-dit: Cross-platform multi-channel CW/Morse decoder in Rust
With an SDR, skim every CW signal across the radio’s full sampled bandwidth.
KK4SW

Building a homemade weather radar with a HackRF or PlutoSDR and salvaged automatic RV dish
After nearly being hit by a tornado that NEXRAD didn’t see coming, Koakno decided to build his own DIY self-contained mobile weather radar built from a $5 salvaged RV satellite dome.
RTL-SDR

Video

APRS net control software
Net Central works in a real net environment, covering the check-in workflow, live map tracking, messaging alerts, and the close net reporting process, built for Amateur Radio operators who want a modern, automated approach to running APRS based nets for EmComm, ARES, and general Amateur Radio net control operations.
KM4ACK

Family of KY student says deputy seized child’s radios without warrant. They’re suing
A Somerset family has filed a lawsuit against the county’s school board and local law enforcement, alleging a deputy wrongly seized two-way radios from a student without a warrant.
Lexington Herald Leader

The integrity question: Inside the WRTC 2026 Multiplier Investigation
Public log analysis has raised serious questions about suspected pirate callsigns, disputed multipliers, and how the world’s premier radiosport competition should respond.
Q5 Magazine

MODEM73
An open source software modem that works with any HF, VHF, or UHF radio capable of 2400 Hz of bandwidth.
MODEM73

Expanding Technician privileges: The fix needs a push
There’s a real, already-written fix for one of Technician licensees’ most common complaints — and it’s been sitting in an FCC docket since 2018.
EtherHam

What’s new at Digital Library of Amateur Radio & Communications — July 2026
DLARC has significantly expanded the AMSAT Symposium archive, adding about 250 new items from AMSAT Space Symposium events. Newly archived material includes audio recordings of the 2007-2008 presentations.
Zero Retries

SDRoxide: Software-defined transceiver
A powerful SDR transceiver client with a GPU panadapter, dual VFOs, neural noise reduction, built-in skimmers, a full stack of digital modes and a live 3D space-weather globe — wrapped in a cyberpunk interface and running native on Linux, macOS & Windows, or streamed to any browser.
SDRoxide

Reticulum
The appeal of reticulum is that it seems to extend the LoRa thing to include mini web pages and a different way of interacting. A cross between packet, the general internet, and normal messaging.
G7KSE

Zero Retries Digital Conference 2026 call for papers
A typical technical paper for ZRDC is a short (typically 5-10 pages) but in-depth explanation of a project, experiment, or new technique.
Zero Retries

I made an AFSK RTTY encoder for the Sony PSP
The PSP is acting purely as an encoder, generating the RTTY audio tones which are then received and decoded externally.
Reddit

TunerScope: A browser app to help optimize HDTV antenna positioning with an RTL-SDR
TunerScope has a few interesting features, including the use of spectrum stitching to visualize the full 6 MHz + wide ATSC signals as the RTL-SDR only provides 2.56 MSPS max.
RTL-SDR

Olivia spotting
View live on-air station spots, filter by mode/band, and spot station activity in real-time.
OliviaDigitalMode.org

Feds hunting for German spy found a 12-year-old radio genius instead
Francis “Frank” Ryder, whose remarkable talent for radio led federal agents to his Brooklyn home during World War I before he went on to found the Suffolk County Radio Club.
South Shore Press

A visit to Nashville’s WSM AM
Photos from the transmitter site of the station that birthed the Grand Ole Opry.
RadioWorld

Video

This 3D printed trailer hitch antenna mast mount is awesome
Printed on Bambu P1S with Bambu PETG, 10 walls, 40% infill.
Ham Radio Tube

40M V Dipole vs 130′ EFHW
The results are not what you expect.
Hounds and ham

APRS On the Air
Let’s create a new Amateur Radio activity and supporting software that brings the activator-and-chaser game of Parks on the Air and Summits on the Air to APRS.
K0TFU

China is using Ham Radio in its territorial claim over the South China Sea
An article goes into great depths to use decisions by the ARRL in the 1990’s and a multi-national DX-petitions to give legitimacy to its claim.
Andrew Woodward

FT8 on CB Channel 26
FT8 has taken over Channel 26 USB (27.265 MHz) as an incredibly efficient way to rack up 11-metre DX contacts on the CB band.
EA5IYL

FT8 Is a fad, and other heresies
People are growing weary of too much tech. Digital detox is trending in the non-radio world.
KE9V

Contact the ISS
Some ISS crew members make random, unscheduled, Amateur Radio voice contacts with earth-bound Radio Amateurs.
ARISS

VHF for Parks On The Air?
Don’t overlook the VHF bands, especially 2m FM.
K0NR

School students successfully launch high-altitude balloon into the atmosphere
The Hutt Valley Amateur Radio Club helped with the transmitters inside the payload.
RNZ

Move Meshtastic up on your list
The worst kept secret in communications.
Off Grid Ham

A look at DXpedition funding
Let’s go over these different funding sources, why each is important, and how they come together to make a DXpedition go.
OnAllBands

ARRL June 2025 VHF Contest replay
Video map version.
K5ND

How Amateur Radio built the Indonesian Internet
PaguyubanNet, packet radio and the pioneers of 1986-1994.
HamRaio.my

Video

SOTA by bicycle in Puerto Rico
Elecraft KX2 + AX1.
WP4TZ

RV Ham Shack
My complete RV Ham Radio setup explained.
KM4ACK

HAMgpt
New platform combines an operator’s license, station, location and live band conditions to answer a practical question: “What can I do with my radio today?”
HAMgpt

In-depth series: Ham Radio
A podcast series on a wide range of Ham Radio topics.
Hacker Public Radio

What does a Ham Radio antenna look like on the International Space Station?
Here’s a peek at part of the gear that helps keep us running in space.
ARISS

APRSMap – Cross platform APRS client
Messaging, offline maps, and ADS-B support.
DC6AP

Paper logging
If anyone would like to use my template, they can download it from my server.
RZ01

Jamoncito FX: My Casio FX870P Logbook software
Logging QSO’s on a calculator. Does it add up?
EI3LH

Exploring the art and science of spectral painting with SDR
Spectral painting is the art of drawing pictures directly on the spectrum waterfall.
RTL-SDR.com

Introduction to DMR: The four wheels on the car
Get all four wheels turning and you’re on the air.
EtherHam

The original social media: Ham Radio connects Rhode Island to the world
The group is composed of Amateur Radio operators ranging from ages 16 to 92, who meet weekly to practice and develop their radio expertise together.
Warwick Beacon

16-year-old ARRL member wins 2026 student coding competition
He designed a mobile application to help users prepare for their Amateur Radio license examinations.
ARRL

Video

DIY folding antenna for military satcom made from trash
I wanted to copy the Trivec style of portable Satcom antennas used by Western militaries. Usually the commercial version costs $1,500 or more.
saveitforparts

Wow that’s a tall vertical antenna
Portable Ham Radio with a vertical dipole for 20 meters.
Coastal Waves & Wires

This is why every Ham Radio operator should attend a Hamfest
Join me as I take you on a complete walkthrough of the 2026 Greater Nashville & Middle Tennessee HamQuest.
KM4ACK