MFJ-812B – VHF SWR/Wattmeter


Introducing the MFJ-812B VHF SWR/Wattmeter with a built-in Field strength Meter. This top-of-the-line device is designed to revolutionize your VHF radio operations by providing accurate and comprehensive readings. With its impressive features and compact design, the MFJ-812B is the perfect tool for amateur radio enthusiasts and professionals alike.


One of the standout features of the MFJ-812B is its ability to accurately read SWR in the 144 – 220 MHz range. This ensures optimal performance and maximum efficiency for your VHF equipment. Whether you’re a seasoned radio operator or just starting out, having the ability to monitor SWR levels is crucial for maintaining a reliable and high-performing radio system.

Additionally, the MFJ-812B allows you to effortlessly measure forward and reflected power in two selectable ranges – 30 or 300 watts. This versatility ensures that you can adapt to various power levels and make informed decisions about your transmission. By providing precise power readings, this SWR/Wattmeter enables you to optimize your equipment’s performance, maximize signal strength, and improve overall communication quality.

The MFJ-812B goes above and beyond by also offering the capability to measure relative field strength from 1 to 220 MHz. This unique feature provides valuable insights into the performance of your antenna system, allowing you to fine-tune and optimize its effectiveness. With a binding post specifically designed for field strength antennas, this SWR/Wattmeter ensures seamless integration into your setup.

Not only does the MFJ-812B excel in functionality, but it also boasts a sleek and compact design. Measuring a mere 4.5 x 2.25 x 3 inches, this unit can easily fit into any workspace or portable setup without compromising on performance. Its two-colour meter enhances visibility and readability, ensuring that you can quickly and accurately interpret the displayed measurements.

In conclusion, the MFJ-812B VHF SWR/Wattmeter is the go-to solution for any VHF radio enthusiast or professional seeking accurate and reliable readings. With its built-in Field strength Meter, wide frequency range coverage, selectable power ranges, and compact design, this device guarantees enhanced performance and improved signal quality. Upgrade your radio operations with the remarkable capabilities of the MFJ-812B.

Additional information

Weight 0.8 kg