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Stop Field Day radio interference! Learn the 3 causes of receiver overload and how to deploy band-pass filters to keep your multi-transmitter station clear.

Unsure which digital voice system fits you best? Compare DMR, D-STAR, and System Fusion by air interface, station identity, networking style, and setup approach.

Which is best for SOTA & POTA? Compare the 100 W Yaesu FT-891 with the FTX-1 Field, which runs up to 6 W on its supplied battery or 10 W from 13.8 V external power, plus a modern touchscreen and SDR-style spectrum display.

Protect your ham rig! Learn why SWR spikes above 2.5:1 damage your transceiver, what causes sudden environmental jumps, and how to tune your setup safely.

For long-distance and global communications 73, Roger Quintana, NJ2RQ

Get your POTA station on the air in under 15 minutes! Learn to select the best transceiver, LiFePO4 battery, antenna, and logging system to start today.

Master the FT8 digital mode! Learn how this 15-second weak-signal protocol works, why it decodes signals down to -21 dB and how to set up your own station.

Decoding the Ionosphere: Understanding Propagation Indices For HF operators, the allure of long-distance communication is constant. Whether you are chasing DX, working POTA, or trying to decide which HF band to call on, the state of the ionosphere can make a major difference. If you have ever checked NOAA’s Space Weather Prediction Center or a…

Welcome to LuffyHamVault, the home of NJ2RQ’s amateur-radio articles, gear notes, POTA, digital modes, mesh, GMRS and more.

If you’ve spent any time scanning the local bands in New Jersey, you’ve almost certainly keyed up the W2NJR repeater network. But who is the voice and the vision behind the gear? I had the pleasure of meeting up with Eric, K2CB, who was first licensed in 1984 at the age of 15. His journey…

POTA is an international award program that encourages amateur radio operators to take their gear out of the home shack and into the wild. It turns public parks into temporary radio stations, promoting both the hobby and our beautiful public lands. The community is split into two main roles (and many operators do both!):  Activators:…

Real-World Review: The Hy-Gain AV-680 Patriots Vertical Antenna If you are looking for a true multi-band HF antenna that delivers solid performance without a massive backyard footprint, the Hy-Gain AV-680 Patriots vertical is bound to cross your radar. Covering 9 bands from 80 meters all the way up to 6 meters, it promises a lot…

If you’ve spent any time looking into modern ways to experience amateur radio, you’ve likely stumbled upon a platform called HamSphere. For many beginners or those without a permanent rig setup, it’s a fascinating gateway into the hobby. But what exactly is it? If you look at a registered call sign like 2HS22392, you’ll notice…

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If you’ve ever been on the air around sunset or sunrise and noticed signals from the other side of the planet suddenly booming in—as if someone flipped a secret switch—you’ve experienced the Gray Line. In the ham radio world, we call this the “DX Magic Hour,” and for good reason. It’s that brief, 30-to-45-minute window…

Simplex operation represents the fundamental Single-Frequency Half-Duplex communication mode. Unlike duplex systems that utilize frequency offsets and repeaters, simplex relies entirely on the direct link between two stations. This makes it the ultimate test of a radiant system’s efficiency and the operator’s mastery of the local RF environment. In the VHF and UHF bands, communication…

If you’ve ever tried to tune an antenna or wondered why your radio isn’t delivering full power to the air, you’ve already bumped into impedance—even if you didn’t call it that. In simple terms, impedance is how a circuit “pushes back” against an RF signal. It’s not just plain resistance. It also includes effects from…

When you look at a grounding system like this—multiple rods connected in a ring—it might seem like overkill at first. But in ham radio, this is exactly the kind of setup that separates a “working station” from a reliable and safe station. In practice, grounding isn’t just about sticking a rod in the ground. It…

Whether you’re working a digital pile-up on FT8 or just trying to jump on a Zoom call from a rural area, we all know that a stable, high-speed internet connection is the backbone of modern life. Today, I want to dive deep into a piece of technology that has completely redefined what “being connected” means:…

There is a unique kind of magic in amateur radio that never gets old. This morning, I sat in my shack, sipped a coffee, and watched my screen as a station in New Zealand confirmed a contact with me. Then Russia. Then Japan. The kicker? I wasn’t using a massive tower. I was using an…

When Iran’s digital infrastructure collapsed into a total blackout, the modern world learned a humbling lesson. For over 60 hours, the silence was absolute: government channels vanished, state media went dark, and public services flatlined. Yet, amidst the wreckage of a sophisticated cyberwar, a single frequency—7910 kHz—remained untouchable. While the internet proved fragile, shortwave radio…

Jack Phillips — the manBorn April 11, 1887 — he celebrated his 25th birthday the day after Titanic departed. He was just a kid.The night it happenedBride had gone to bed early to relieve Phillips at midnight. The Titanic hit the iceberg at 11:40pm. Bride woke up, Phillips said they had struck something, and Captain…

That thought bubble says it all. What if I mess up? What do I even say? Will anyone respond? 🤔We’ve all been there. Every single one of us.I am new ham as well and this is what I learned on the air— the ham radio community is the most welcoming group of people you’ll ever…

December 12, 1901. A cold, windswept cliff in Newfoundland, Canada.Guglielmo Marconi sat in a tent — headphones on, listening for something many believed simply wouldn’t work.Then he heard it.Three faint dots. ···The letter “S” in Morse code.Transmitted from Poldhu, Cornwall, England — over 2,000 miles across the Atlantic.No wire. No cable. Just invisible waves crossing…