Showing posts with label meter. Show all posts
Showing posts with label meter. Show all posts

Saturday, December 6, 2025

McBazel Surecom SW-112HF — In-Depth Review


Introduction
The Mcbazel Surecom SW-112HF is a compact V.S.W.R. and power meter designed for HF radio operators who need a simple, affordable way to measure forward power, reflected power, and standing wave ratio. It covers a wide portion of the HF spectrum, offers an analogue-style meter with backlighting, and supports up to 120 watts of power. This makes it a practical tool for everyday amateur radio use, field work, and antenna troubleshooting.

What It Is
The SW-112HF is built for HF bands from 1.5 to 60 MHz. It uses an analogue meter to show forward and reflected power, and it can also display SWR. The power handling rating reaches up to 120 watts, which is suitable for most HF transceivers operating at standard output levels. The unit uses SO-239 connectors and includes a backlit meter powered by an external DC source between 5 and 12 volts.

Build, Fit and Finish
The meter is small, lightweight, and easy to place in any radio setup. Its plastic housing and clear analogue meter cover feel typical for compact test gear, giving it a serviceable and practical appearance. The backlight improves readability in dim environments, which is especially helpful during mobile operations or evening tuning. The overall build is functional rather than premium, but appropriate for its price point.

User Interface and Ergonomics
The SW-112HF is extremely simple to operate. You insert it between your radio and antenna, apply power to the backlight if needed, key your transmitter, and observe the meter. The analogue needle gives immediate visual response, making it easy to spot issues such as high reflected power or poor antenna performance. There are no complicated menus or digital settings, making the unit ideal for beginners or quick field work.

Performance and Accuracy
The meter provides readings that are generally accurate enough for everyday troubleshooting, though not at the precision level of professional lab instruments. Expect the measurements to be best used for approximate tuning, antenna diagnostics, and ensuring your setup is safe for your radio. It excels at identifying major issues such as broken antenna elements, bad coax connections, or excessively high SWR. For tasks requiring calibration-grade accuracy, a higher-end meter or analyzer would be more appropriate.

Tips for Getting the Best Readings
Place the meter as close to the radio as possible using a short, high-quality jumper cable. Use a steady carrier such as AM, FM, or CW for consistent readings. SSB voice peaks will cause the needle to fluctuate, so for the most repeatable results, use a carrier mode during testing. Remember that this type of meter is best for practical measurements rather than precise laboratory data.

Pros
• Extremely simple to use
• Portable and lightweight
Covers the entire HF range from 1.5 to 60 MHz
• Useful analogue meter with backlight
• Affordable and suitable for field work or beginners
• Provides immediate visual feedback

Cons
• Accuracy is adequate but not precise enough for calibration work
• Analogue display requires careful interpretation
Limited to SO-239 connectors unless adapters are used
• Not designed for advanced analysis or frequency sweeps

Who This Is For
The SW-112HF is ideal for amateur radio operators who need a no-nonsense, low-cost meter for quick checks. It works well for field operations, mobile installations, and everyday antenna diagnostics. New hams will appreciate its simplicity. Advanced users who require precise measurements may want to pair it with more sophisticated equipment.

Comparisons
Compared to digital SWR meters or antenna analyzers, the SW-112HF trades numeric precision and advanced features for simplicity and cost savings. If you rely on visual response and only need to confirm whether an antenna is performing correctly, its analogue readout can be more intuitive than digital numbers. For plotting antenna resonance or performing detailed testing, however, a more advanced analyzer is the better choice.

Final Verdict
The Mcbazel Surecom SW-112HF is a practical and reliable tool for basic HF antenna and power testing. Its analogue meter, broad frequency coverage, and straightforward operation make it an excellent choice for quick diagnostics and field use. While it is not a precision instrument, it is more than capable of identifying problems and giving you the information needed to keep your HF station operating safely. For its price and simplicity, it offers solid value to the everyday amateur radio operator.

See The Mcbazel Surecom On Amazon!

Monday, October 7, 2024

Review of the AURSINC Upgraded NanoVNA-H4 Vector Network Analyzer

 

Introduction

The AURSINC Upgraded NanoVNA-H4 is a powerful and versatile vector network analyzer (VNA) that has garnered attention among amateur radio operators and RF enthusiasts. With its latest V4.3 update, this device covers a frequency range from 10 kHz to 1.5 GHz and boasts a user-friendly 4-inch touch screen. This review will delve into its features, performance, and overall usability.

Key Features

Frequency Range and S-Parameters

The AURSINC NanoVNA-H4 operates across a broad frequency spectrum, from 10 kHz to 1.5 GHz, making it suitable for HF, VHF, and UHF applications. The ability to measure S-parameters (S11, S21, S12, S22) provides users with a comprehensive analysis of the reflection and transmission characteristics of antennas and RF components.

Display and User Interface

The 4-inch touch screen is a standout feature. The display is bright and responsive, making it easy to navigate through the various measurement modes. The intuitive interface allows users to quickly access essential functions like SWR, phase, delay measurements, and the Smith chart, enhancing the user experience.

Measuring Capabilities

This VNA excels in measuring:

  • SWR (Standing Wave Ratio): Essential for ensuring antenna efficiency.
  • Phase: Important for understanding the behavior of RF circuits.
  • Delay: Useful for evaluating the performance of components.
  • Smith Chart: A graphical representation that aids in impedance matching.

These capabilities make the NanoVNA-H4 a comprehensive tool for both professionals and hobbyists.

Battery Life and Portability

One of the significant advantages of the AURSINC NanoVNA-H4 is its portable design and long battery life. It is lightweight and compact, making it an ideal companion for fieldwork. Users can operate it for extended periods without the need for constant recharging, a feature that adds to its practicality.

Connectivity and Software

The device supports USB connectivity, allowing users to interface it with a computer for more in-depth analysis and data logging. The ability to use the NanoVNA with software such as NanoVNA Saver further enhances its functionality, enabling users to visualize and manipulate data effectively.

Performance

The performance of the AURSINC NanoVNA-H4 is impressive. Users have reported accurate and consistent measurements across its frequency range. The calibration process is straightforward, and once calibrated, the device maintains accuracy, making it a reliable tool for antenna testing and RF component evaluation.

Pros and Cons

Pros

  • Wide frequency range (10 kHz to 1.5 GHz)
  • User-friendly 4-inch touch screen
  • Comprehensive measurement capabilities (S-parameters, SWR, phase, delay, Smith chart)
  • Portability and long battery life
  • USB connectivity for enhanced functionality

Cons

  • Learning curve for beginners: While the interface is intuitive, those new to VNAs may require time to familiarize themselves with the various functions.
  • Limited documentation: Some users have noted that the manual could be more comprehensive, especially for advanced features.

Conclusion

The AURSINC Upgraded NanoVNA-H4 Vector Network Analyzer is an exceptional tool for anyone involved in RF and antenna analysis. With its wide frequency range, robust measurement capabilities, and user-friendly interface, it stands out as a valuable asset for both amateur and professional applications. While there may be a slight learning curve for beginners, the device's performance and portability make it a worthwhile investment. For those seeking a reliable and versatile VNA, the NanoVNA-H4 is a strong contender that is sure to meet and exceed expectations.

Have A Look At The Nano VNA-H4 On Amazon

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