The Ultimate Guide to QRP Radios: Low-Power Ham Radio for Enthusiasts

KE2YK's SW3B Operating Portable

Introduction

What is QRP Radio?

If you're familiar with amateur radio or just starting to explore it, you might have come across the term "QRP." But what exactly does QRP mean? Simply put, QRP refers to low-power transmission in amateur radio. It's all about making communication happen with minimal power—usually 5 watts or less for Morse code (CW) and digital modes, and up to 10 watts for voice (SSB). The beauty of QRP lies in the challenge: operating efficiently with limited power requires a mix of skill, strategy, and the right equipment.

How QRP Radio is Different from High-Power Operation

When you think of high-power radio operations, you might imagine stations cranking up their power to 100 watts or more to get their signals heard. This is what’s known as QRO (high-power operation). In contrast, QRP operators rely on finesse rather than raw power. While QRO stations use sheer strength to overcome signal loss and poor propagation, QRP stations work smarter. They rely on effective operating techniques, well-placed antennas, and favorable band conditions to make reliable contacts with just a tiny amount of power.

The Appeal of Low-Power Communication

What makes QRP so attractive is practicing communication skills under constrained conditions. QRP operators have to optimize antenna setups, and catch those sweet spots when the radio bands are open. QRP is often tied to portable which adds another layer of interest. For outdoor enthusiasts like hikers, campers, and preppers, operating QRP offers a way to stay connected when off the grid.

Where Do QRP Radios Get Used?

QRP radios aren't just for casual hobbyists—they have a variety of practical applications:

  • Portable Operations: One of the main draws of QRP is that the radios are small and lightweight. This makes them perfect for activities like hiking, backpacking, and activating summits (SOTA) or state parks (POTA). Imagine setting up a tiny station on top of a mountain or in the middle of a forest powered with a small battery or solar panel.
  • Emergency Communication: Because many QRP radios are designed to be compact and use minimal power, they can be used in off-grid emergencies. QRP radios provide a reliable means of communication when you're far from civilization.
  • Contests and Awards: QRP operators enjoy participating in radio contests and earning recognition. There are many awards specifically for QRP operators that offer a fun way to put your skills to the test!

Popular QRP Radios to Check Out

Elecraft KX2
Elecraft KX2

If you're curious about getting started with QRP, there are plenty of great radios on the market to consider. Here are a few favorites among operators:

The Elecraft KX2 is one of the most compact and advanced QRP transceivers available, designed for portable and field operations. 

Weighing just 13 ounces (370 grams), it is small enough to fit in a backpack yet powerful enough to support CW, SSB, and digital modes.

·         Key Features

    • Power Output: 10W max
    • Bands: 80m–10m
    • Modes: CW, SSB, Digital
    • Built-in Antenna Tuner: Yes
    • Internal Battery Option: Yes
    • Best For: Backpacking, field ops, and high-performance QRP work

·         Strengths & Weaknesses

    •  Excellent receiver performance with strong filtering options
    •  Lightweight and ultra-portable for outdoor enthusiasts
    •  Built-in tuner allows use with random wire antennas
    •  Expensive compared to other QRP radios
    •  Limited bands (no 160m, no 6m/VHF/UHF)

The ICOM IC-705 is a modern, high-tech QRP transceiver with touchscreen controls, a built-in sound card for digital modes, and full SDR (Software-Defined Radio) capabilities. It is designed for hams who want cutting-edge features and excellent receiver performance.

·         Key Features

    • Power Output: 10W max (with external power), 5W on battery
    • Bands: 160m–70cm
    • Modes: CW, SSB, AM, FM, D-STAR Digital
    • Built-in Antenna Tuner: No
    • Internal Battery Option: Yes
    • Best For: Advanced QRP operators, SDR enthusiasts, digital mode users

·         Strengths & Weaknesses

    •  Full SDR design provides high-performance receiver capabilities
    •  D-STAR digital mode included for modern ham operations
    •  Built-in Wi-Fi, Bluetooth, and GPS for remote operation
    •  Expensive compared to other QRP radios
    •  Battery drains quickly when using high-power modes

The Xiegu G90 is a budget-friendly QRP transceiver with a built-in tuner and a detachable display. It is popular among new hams and portable operators looking for a cost-effective yet feature-rich radio.

·         Key Features

    • Power Output: 20W max
    • Bands: 160m–10m
    • Modes: CW, SSB, AM, Digital
    • Built-in Antenna Tuner: Yes
    • Internal Battery Option: No (external power required)
    • Best For: Budget-conscious operators, home station setups

·         Strengths & Weaknesses

    •  Affordable compared to other QRP radios
    •  20W output offers flexibility for both QRP and QRO use
    •  Built-in tuner makes antenna setup easier
    •  Heavier and less compact than other QRP radios
    •  Chinese-built radio—firmware updates and support can be inconsistent

Whether you're looking for a fun challenge or a reliable way to communicate in remote areas, operating QRP radios are unique. QRP radios combine the fun of amateur radio with the skill of operating on minimal power. With the right gear and conditions, it is possible to make contacts across the globe.


References

  • SOTA (Summits On The Air) official guidelines and resources https://www.sota.org.uk/
  • POTA (Parks On The Air) field activation manual https://parksontheair.com/
  • "The Joy of QRP: Strategy for Success" by Adrian Weiss, W0RSP https://amzn.to/4cklBNe
  • "Minimum QRP: Doing More With Less" by Peter Parker, VK3YE https://amzn.to/3FXAtVS
  • RSGB (Radio Society of Great Britain) books https://bit.ly/3FX1YPu 
  • QRP Amateur Radio Club International (QRP ARCI) publications https://www.qrparci.org/
  • "Pedestrian Mobile Handbook" by Edward Breneiser, WA3WSJ https://amzn.to/4cmWxoX
  •  Personal Experience

    KE2YK Operating Portable

    I have been a QRP operator for over 30 years. I enjoy all aspects of operating QRP. Parks on the Air is one of my personal favorites. It's a way to get out of the shack and put my QRP radio station on the air. One of the fun aspects of activating a state park for the Parks on the Air system is those micro pile ups you get while operating calling CQ POTA. 

    Final Thoughts

    Choosing the right QRP radio depends on your operating needs, budget, and preferred bands/modes. Whether you need an ultra-portable rig like the Elecraft KX2, an all-band workhorse like the FT-818ND, or an SDR powerhouse like the IC-705, there is a QRP radio that fits your style.


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    The Ultimate Guide to QRP Radios: Low-Power Ham Radio for Enthusiasts

    Introduction What is QRP Radio? If you're familiar with amateur radio or just starting to explore it, you might have come across t...