Antennas: The Piece That Makes the Magic Happen
A personal journey into Parks on the Air.
If there is one thing I want you to take away from this article, it’s this: you don’t need an expensive radio to have a successful POTA activation, but you do need an antenna that works.
We can spend hours comparing radios, looking at fancy displays, debating 10 watts versus 100 watts, and convincing ourselves that the newest piece of equipment will solve all our problems. Meanwhile, somebody down the road is making contacts with a simple wire antenna hanging in a tree.
Welcome to amateur radio!
When you’re operating Parks on the Air, your antenna plays a major role in what you hear and how well your signal gets out. That doesn’t mean you need the biggest antenna, the tallest tower, or a wallet full of expensive equipment. It means understanding a few basics and figuring out what works for you.
Let’s look at some options.
1. Three Antennas, Three Approaches — One Goal
There are plenty of antenna designs out there, but let’s concentrate on three popular choices for portable operation: the dipole, the vertical, and the end-fed wire.
I’ve used all three during my own radio adventures, and here’s one of the biggest things I’ve learned: all three have their place, and you can’t set them all up the same way and expect the same results.
Each antenna has its own characteristics. They can be installed at different heights, positioned differently, and arranged to fit the space available at your operating location. Those differences affect how each antenna radiates your signal, including its takeoff angle.
If that sounds a little technical, don’t worry. The takeoff angle is simply the angle at which your radio signal leaves the antenna. Depending on the antenna design, its height, and how it’s installed, that signal may favor different paths to the stations you’re trying to reach.
For example, a signal radiated at a relatively high angle can be useful for shorter-distance contacts, while a lower angle can help support longer-distance contacts under the right conditions. The actual results depend on several factors, including the antenna, frequency, propagation, and surrounding environment.
But here’s the important part: don’t get so caught up in takeoff angles, radiation patterns, and antenna theory that you never get around to making a contact!
When you’re starting out in POTA, you don’t need to master every detail of antenna design. You need to understand the antenna you’re using, learn how to deploy it properly, and figure out how to get the best performance from it.
Start simple. Learn your antenna. Learn how to use it effectively.
2. The Dipole: Simple, Effective, and Cheap
A dipole is one of the simplest antennas you can build. At its most basic, it’s two pieces of wire fed in the middle, with one wire extending in each direction.
You can make one from ordinary antenna wire, connect it to coax, and get it into the air. Hang it between two trees, support the center with a portable mast, or find another arrangement that fits your park.
A properly built dipole can perform very well without a complicated matching system. It’s also a great homebrew project for anyone who enjoys building their own equipment instead of buying everything off the shelf.
Of course, there are a few catches. You need room to spread it out, and you need somewhere to support it. Not every park has convenient trees, and not every picnic area gives you room for a long wire.
Installation also matters. How high you hang the antenna and which direction it runs can affect its radiation pattern and performance.
Still, a dipole is an excellent place to start. It’s relatively inexpensive, straightforward to build, and can teach you a lot about antennas without requiring you to take out a second mortgage.
3. The Vertical: When Space Is at a Premium
A vertical antenna is another popular option for POTA. Instead of stretching a wire horizontally, its main radiating element extends upward.
Verticals can be especially handy when you’re working in a small campsite or an open area where stringing a dipole isn’t practical. Some use telescoping whips, while others use wire supported by a fiberglass pole.
Many vertical antennas also use radials. These are wires arranged around the antenna’s base or laid along the ground to provide a return path for current and help the antenna operate as intended.
I’ve been experimenting with a homebrew vertical of my own, including a loading coil that allows me to use a shorter whip on 40 meters. Along the way, W4TBH has helped me learn the ropes with both vertical and end-fed half-wave (EFHW) antenna builds. Having someone willing to share their knowledge, offer advice, and help you work through a project makes a real difference when you’re learning something new.
It’s a good reminder that amateur radio isn’t just about the equipment or the contacts we make. It’s also about the people who help us along the way and the knowledge we pass on to the next ham.
You don’t have to purchase a complete commercial antenna system to get on the air. You can build something, test it, make adjustments, and learn along the way—with a little help from your friends when you need it.
The trade-off is that verticals still need some thought. The available space, radial arrangement, antenna height, and nearby objects can all influence performance. And just because an antenna stands straight up doesn’t mean it automatically works better than a horizontal wire.
Like most things in amateur radio, there’s a little more to it than attaching a connector and hoping for the best.
4. The End-Fed Wire: Flexible and Portable
End-fed wire antennas are popular among portable operators because they’re often convenient to pack, carry, and deploy.
As the name suggests, the antenna is fed near one end rather than in the middle. Depending on its design, you might run the wire from a tree to a portable mast, hang it as a sloping wire, or arrange it in an inverted L.
Some end-fed antennas are designed for a single band, while others can operate on multiple bands with the appropriate transformer or matching arrangement.
Their flexibility can be a real advantage when you’re setting up in a park where trees, open space, and support options are limited.
However, an end-fed wire isn’t automatically a perfect match on every band. The wire length, installation, feed system, and operating frequency all matter. You may need a tuner, depending on the design and the bands you want to use.
And remember, an end-fed wire isn’t automatically better or worse than a dipole. Its performance depends on how the complete antenna system is designed and installed.
The beauty of portable operating is that you can experiment with different arrangements and see what works best for your situation.
5. Get That Antenna Up — Safely
You can have a great radio and a well-built antenna, but installation still matters.
For wire antennas, height can make a significant difference in how the signal travels. A dipole installed relatively low compared with the wavelength may radiate more energy at higher angles, which can be useful for shorter-distance contacts. Raising it changes the radiation pattern and may improve performance for other paths.
Verticals have their own considerations, including placement and the radial system.
So what should you do when you arrive at the park?
- Look for suitable trees and open space before choosing your operating spot.
- Keep wires away from walkways, roads, and places where someone could trip over them.
- Use a telescoping mast or fiberglass pole when trees aren’t available.
- Secure your antenna against wind and changing weather.
- Check your SWR before transmitting, and make adjustments when necessary.
- Follow the park’s rules and avoid damaging trees, vegetation, or other property.
And please remember that the park belongs to everyone. We want to make radio contacts, not create a new obstacle course for unsuspecting hikers.
If your antenna setup requires a complicated rescue operation every time you pack up, it might be time to rethink the design.
Simple and reliable is a good combination.
6. Do I Need an Antenna Tuner?
Maybe. It depends on your antenna and the bands you want to operate.
An antenna tuner helps present an acceptable impedance to your radio. It can make an antenna system usable over a wider range of frequencies, but it doesn’t magically turn an inefficient antenna into an efficient one.
Some antennas are designed to work well on a particular band without a tuner. Multiband antennas may require one on some or all of the bands you want to use.
If your radio has a built-in tuner, that’s convenient. If it doesn’t, an external tuner may be useful.
Here’s an important point: a good SWR reading doesn’t automatically mean your antenna is radiating efficiently.
The goal isn’t simply to make the radio happy. It’s to get as much of your signal into the air as practical.
If you’re new to antennas, don’t let the tuner question intimidate you. Start with an antenna designed for the band you want to use, learn how to check SWR, and follow the manufacturer’s guidance for your equipment.
You can explore more complicated multiband setups as your experience grows.
7. Build It, Test It, Improve It
Here’s my favorite part of this hobby: you can experiment without spending a fortune.
Build a dipole. Try a vertical. Put up an end-fed wire. Change the height or position and see what happens.
Keep notes about the band, antenna setup, SWR, and contacts you make. Over time, you’ll start to recognize what works well in different locations and under different conditions.
Your first antenna doesn’t have to be your last antenna. In fact, if you’re anything like most hams, you’ll probably build several and tell yourself that this one is finally going to be the perfect antenna.
Until the next project comes along.
Don’t judge an antenna by a single activation, either. Band conditions, propagation, noise, weather, and your surroundings all affect what you hear and how far your signal travels. A quiet band or a slow afternoon doesn’t automatically mean your antenna has failed.
And don’t assume someone else’s results will be identical to yours. Their antenna may be higher, their surroundings may be different, or propagation may simply be more favorable at that moment.
The best way to learn is to get out there, make contacts, pay attention, and experiment.
You don’t need to understand every equation before you start. You just need enough knowledge to operate safely, recognize when something isn’t working properly, and make sensible adjustments.
Final Thoughts
You don’t need a tower, a giant antenna, or a truckload of expensive equipment to enjoy POTA. You need an antenna suited to your operating conditions, a safe way to put it up, and the willingness to learn.
I’ve used dipoles, verticals, and end-fed wires, and each has taught me something different. None is automatically the answer to every situation. The trick is learning what your antenna does well and how to use it effectively.
Start simple. Learn your equipment. Take notes. Make changes one at a time, and don’t be afraid to experiment.
Most importantly, don’t let antenna building keep you from getting outside and making contacts. You can learn a great deal from the first antenna you build, even if it isn’t the last one you use.
And if you discover an antenna setup that works particularly well for you, share it with the rest of us. We’re always looking for another excuse to build something out of wire, tubing, and whatever happens to be lying around the workshop.
Get Outside, Get On the Air, Get in the Park, but most importantly, HAVE FUN and Keep it Simple!!
73 KF5WZD – Chris
