Unveiling the Mini Digital SWR and Power Meter: A Comprehensive Review By OM0ET

Introduction

In the world of ham radio enthusiasts, having accurate measurement tools is essential. Today, I am introducing a remarkable device that has caught the attention of radio aficionados worldwide – the Mini Digital SWR and Power Meter. In this article, we’ll delve into its features, performance, and why it’s gaining popularity among QRP and QRO applications.

The Mini Digital SWR and Power Meter

The Mini Digital SWR and Power Meter, a recent discovery on AliExpress, has generated quite a buzz within the ham radio community. This compact device, known for its accuracy and portability, offers ham radio operators a cost-effective solution for monitoring SWR and power levels.

Unveiling the Specifications

The dimensions of this impressive device are worth noting. It fits snugly in the palm of your hand, with the box measuring 38mm in height, 88mm in width, and a depth of only 63mm. What sets it apart is its internal 1-ampere-hour battery, which ensures that you can use it on the go without worrying about power sources.

Key Features

1. Easy-to-Read Display

Upon switching on the Mini Digital SWR and Power Meter, you’ll be greeted by a clear display that showcases vital information. At the top, you’ll find the Forwarded Power, representing the power output from your transceiver. The Reflected Power is displayed below, indicating the power returning from your antenna or coaxial feed line. Most importantly, the SWR value is prominently featured, and a lower value, ideally 1.0, indicates an efficient antenna system.

2. Battery Voltage Indicator

Keeping an eye on your battery status is crucial during field operations. The Mini Digital SWR and Power Meter includes a battery voltage indicator, providing you with real-time information about your power source. A fully charged battery reads around 4.1 volts.

3. Protective Features

On the right side of the device, three LEDs—orange, green, and red—are visible. The red LED indicates a fully charged battery, while the orange and green LEDs serve as essential indicators. Additionally, there’s a small hole in the corner for audio signalization, helping prevent damage to your transceiver in cases of high SWR.

4. Power Handling

This remarkable device can handle a maximum peak power of 120 watts, making it suitable for various applications. Whether you’re operating at low power (QRP) or higher power (QRO), the Mini Digital SWR and Power Meter has you covered.

5. Robust Build

The Mini Digital SWR and Power Meter features a robust metallic case made of aluminum, ensuring durability and longevity. This construction is a testament to its quality.

Connectivity

On the back of the device, you’ll find two SO239 sockets with gold-plated internal pins. This meter supports FM modulation and SSB, providing flexibility in your radio operations. Connecting the Mini Digital SWR and Power Meter is straightforward, with a TX cable to your transceiver and a direct connection for your antenna.

Testing and Results

To accurately gauge the performance of this SWR meter, a 25-watt dummy load is recommended. This small investment ensures accurate SWR readings, making it an excellent addition to your equipment arsenal. The Mini Digital SWR and Power Meter was tested with a variety of bands, and the results were impressive.

Shortwave Analysis

Shortwave analysis revealed SWR values consistently near the ideal 1.0 mark, indicating efficient antenna performance. Even on VHF and UHF bands, the SWR remained relatively low, showcasing the versatility of this device.

Additional Equipment

To ensure precise measurements, other equipment such as a 25-watt dummy load, antenna analyzers, and transceivers were used during testing. The Mini Digital SWR and Power Meter seamlessly integrated into the setup, providing accurate readings and valuable insights into antenna performance.

Conclusion

In conclusion, the Mini Digital SWR and Power Meter is a game-changer for ham radio enthusiasts. Its compact size, user-friendly interface, and impressive accuracy make it a valuable addition to any radio operator’s toolkit. Whether you’re a QRP enthusiast or require higher power handling (QRO), this device can meet your needs with ease.

For those interested in acquiring this device or exploring more about the Mini Digital SWR and Power Meter, you can find detailed information and purchase links in the video description. We hope this article has shed light on the capabilities of this remarkable device, and we look forward to your continued exploration of the world of ham radio. Good luck and 73!