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Field Notes

The HAMSTATION Blog

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Long-form guides on antennas, propagation, digital modes, and the everyday craft of being on the air. Written for operators who want to understand what they are doing, not just push buttons.

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An HF base station transceiver with an external speaker and accessories on a desk
Featured·Equipment

Getting the Most From Your Receiver: Filters, AGC, and DSP

Most operators use a fraction of the receiver they paid for. These seven controls turn a marginal signal into a readable one without spending anything.

Sep 9, 2026 · 10 min read
A competitor holding a directional antenna and receiver during a radio direction finding event
VHF/UHF
Radio Direction Finding: Foxhunting, ARDF, and Tracking Real Interference

The skill that lets you find a hidden transmitter in a park is the same one that finds the noise source killing your receiver. Here is how it works.

Sep 6, 2026 · 10 min read
A homebuilt single-band QRP CW transceiver on a workbench
QRP
QRP Operating: Doing More With Five Watts

Cutting power from a hundred watts to five costs thirteen decibels. Here is why that matters far less than beginners expect, and how to make it work.

Sep 3, 2026 · 10 min read
A UHF series PL-259 coaxial plug showing the threaded shell and center pin
Station Build
Installing Coax Connectors: PL-259 Soldering and Better Alternatives

The connector you built yourself is the most likely failure point in your station. Here is how to make one that lasts twenty years outdoors.

Aug 31, 2026 · 10 min read
A modern transceiver panadapter display showing many CW signals across a band segment
Modes
SSB, AM, FM, and CW: Choosing the Right Mode for the Job

Modes are engineering tradeoffs between bandwidth, power efficiency, and audio quality. Understanding the tradeoff tells you which one to reach for.

Aug 28, 2026 · 10 min read
A NanoVNA handheld vector network analyzer displaying a frequency sweep
Measurement
The NanoVNA and Antenna Analyzers: A Practical Field Guide

A fifty-dollar vector network analyzer answers questions that used to require guesswork. Here is how to calibrate it and what to actually measure.

Aug 25, 2026 · 11 min read
A tower supporting stacked yagi antennas at an amateur radio station
Operating
Working DX: Split Operation, Pileups, and the Art of Being Heard

Breaking a pileup is a skill, not a power contest. Here is how split operation works and the timing that gets a hundred-watt station through.

Aug 22, 2026 · 11 min read
A budget dual-band handheld transceiver with programming cable and accessories
VHF/UHF
Programming Your Handheld with CHIRP Without Breaking It

Front-panel programming is why most handhelds sit unused. CHIRP turns an hour of menu diving into five minutes, provided you do the steps in the right order.

Aug 19, 2026 · 9 min read
A spectrum analyzer display showing signal levels and intermodulation products in decibels
Theory
Decibels Demystified: The Only Math That Really Pays Off

Decibels are the language every antenna, filter, and coax spec is written in. Learn three numbers and you can do the arithmetic in your head for good.

Aug 16, 2026 · 10 min read
A compact all-in-one APRS tracker module with radio and GPS built in
Digital
APRS and Packet Radio Explained for the Modern Operator

Long before consumer GPS tracking, hams built a real-time digital network on 2 meters. Here is how APRS works and how to join it without annoying anyone.

Aug 13, 2026 · 10 min read
An operator running a portable amateur radio station during a Summits On The Air activation
Portable Operating
POTA and SOTA: A Practical Guide to Activating in the Field

Park and summit activations turned portable operating into the fastest-growing corner of the hobby. Here is the kit, the technique, and the etiquette.

Aug 10, 2026 · 11 min read
Amateur radio club members operating a temporary field station under a shade canopy
Getting Started
Passing Your Amateur Radio License Exam: A Six-Week Plan

The exam is a much smaller obstacle than the folklore suggests. Here is a study plan, the topics that unlock everything else, and what exam day looks like.

Aug 7, 2026 · 10 min read
A flexible solar panel and portable battery setup used for field power
Power
Powering Your Station: Batteries, Solar, and Honest Power Budgets

Most portable stations fail on power, not on radio. Here is how to size a battery, budget a weekend, and stop guessing at duty cycle.

Aug 4, 2026 · 11 min read
A long wire antenna feedpoint with a balun enclosure and coaxial cable attached
Antennas
Baluns, Chokes, and the Common-Mode Current Nobody Warned You About

Half of the mysterious antenna problems in amateur radio are one problem wearing different masks. Here is what common-mode current is and how to stop it.

Aug 1, 2026 · 10 min read
A wire vertical antenna for amateur radio supported by a mesquite tree in the Arizona desert
Antennas
Choosing Your First HF Antenna: Dipole, Vertical, or End-Fed

The antenna decides how far you get heard, not the radio. Here is an honest comparison of the three designs almost every new HF operator chooses between.

Jul 29, 2026 · 11 min read
A radio interference troubleshooting scene with an oscilloscope, ferrite chokes on cables and a transceiver
Troubleshooting
Hunting and Killing RFI in Your Shack

That mysterious buzz across 40 meters is almost never external. Here is a diagnostic order that finds and eliminates household RFI in an afternoon.

Jul 26, 2026 · 10 min read
A collection of vintage QSL postcards from around the world on a wooden desk
Awards
QSL Cards, LoTW, and Chasing Awards Without Losing Your Mind

Confirmations are the paper trail of your on-air life. Here is how the modern awards ecosystem works and how to participate without paperwork burnout.

Jul 23, 2026 · 9 min read
A small SDR dongle connected to a laptop displaying a colorful spectrum waterfall
Digital
Software Defined Radio: A Practical Primer for Amateurs

SDR turned every laptop into a spectrum analyzer. Here is what it is, why it changed the hobby, and how to get started for under thirty dollars.

Jul 20, 2026 · 9 min read
A tall VHF UHF repeater tower silhouetted at sunset on a hilltop
VHF/UHF
Repeaters and VHF/UHF Etiquette: Sounding Like You Belong

The local repeater is where most new operators start. Learn the rhythm, the words, and the small courtesies, and you will fit in from the first transmission.

Jul 17, 2026 · 8 min read
Close-up of a brass Morse code straight key on a wooden desk with warm lamp light
CW
Learning Morse Code in 2026: Why It Is Worth It and How to Do It

The Morse test is gone, and yet CW is more popular than ever. Here is why, and a training plan that fits into your commute.

Jul 14, 2026 · 9 min read
A radio operator working at night by lamp light with a notebook and battery-powered transceiver
EmComm
Emergency Communications: When the Grid Goes Down, You Are the Grid

Real emergency communications is quiet, unglamorous, and mostly about being reliable. Here is how to prepare a station that will still be on the air on day seven.

Jul 11, 2026 · 10 min read
Silhouette of a hand holding an HT skyward at night with a satellite streak overhead
VHF/UHF
Amateur Satellites for Beginners: Working the Birds With a Handheld

You can work amateur satellites with a five-watt handheld and a homemade antenna. Here is exactly how, from tracking software to your first contact.

Jul 8, 2026 · 10 min read
A ham radio contest station at night with multiple monitors, radios and headphones bathed in green display glow
Operating
Contesting Basics for Normal Humans: Your First Weekend

Radio contests look like chaos. Underneath the noise is a simple structure that anyone can learn in an afternoon and enjoy for a lifetime.

Jul 5, 2026 · 9 min read
Assorted coaxial cables with PL-259 and N connectors laid out on a workbench under blue lighting
Antennas
Choosing the Right Coax: What the Data Sheet Is Actually Telling You

RG-58, RG-8X, LMR-400, hardline. The names are a mess, the marketing is worse. Here is the honest guide to picking a feedline that matches the job.

Jul 2, 2026 · 9 min read
Copper ground rod, braided strap and a lightning arrestor mounted on an equipment rack
Safety
Station Grounding and Bonding: The One Job You Cannot Skip

A proper ground is boring, invisible, and the difference between a station that survives ten winters and one that dies in a single storm.

Jun 29, 2026 · 10 min read
A small portable ham radio setup on a rocky mountain summit at golden hour, with wire antenna and backpack
Portable Operating
Building Your First Portable Station: POTA, SOTA, and the Field Kit

Portable operating turns a hobby into an adventure. Here is how to build a lightweight, reliable HF station that fits in a backpack and works from any hilltop.

Jun 26, 2026 · 10 min read
A laptop screen showing an FT8 waterfall display beside an HF transceiver in a dark room
Digital
Digital Modes: FT8, JS8, and the Quiet Revolution on HF

Digital modes have transformed what a modest station can accomplish. Here is how they work, when to use each one, and how not to become a robot.

Jun 23, 2026 · 9 min read
A silhouetted radio tower under a green and blue aurora, symbolizing ionospheric propagation
Propagation
HF Propagation: Reading the Bands Like a Weather Map

The ionosphere is a weather system for radio waves. Learn to read it and you will always know which band to try before you turn the dial.

Jun 20, 2026 · 11 min read
Close-up of an SWR analyzer meter with the needle deflected, coax cable attached
Antennas
Understanding SWR and Antenna Matching Without the Magic

SWR is the number every new ham fixates on, but few can explain what it actually measures. Here is the physical picture, without hand-waving.

Jun 17, 2026 · 10 min read
A dimly lit amateur radio operator's desk with glowing transceivers and morse key
Getting Started
Getting Started with Amateur Radio: A Complete Beginner's Roadmap

From your first study session to your first on-air contact, here is exactly what to expect when you decide to become a licensed ham radio operator.

Jun 14, 2026 · 9 min read
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