MFJ-264 Dry Dummy Load

The MFJ-264 Dry Dummy Load is a vital tool for amateur radio operators and professionals alike. It provides a reliable means of tuning or testing transmitters without the need for an actual antenna. Here’s a comprehensive review highlighting its features, performance, and overall value:

Design and Build Quality:                                                                                          MFJ-264 Dry Dummy Load

The MFJ-264 boasts a rugged and durable design, with high-quality materials ensuring longevity and reliability. Its construction features a robust metal enclosure that effectively dissipates heat generated during operation. The dummy load is compact and lightweight, making it easy to transport and use in various settings.


  1. High Power Handling: The MFJ-264 is capable of handling high power levels. This makes it suitable for testing transmitters and amplifiers across a wide range of frequencies.
  2. Impedance Match: The dummy load provides a stable 50-ohm impedance match, ensuring accurate testing and measurement of transmitter output power.
  3. Cooling Ventilation: The metal enclosure features built-in ventilation slots, allowing for effective heat dissipation during prolonged operation.
  4. SO-239 Connector: The dummy load is equipped with a standard SO-239 connector. This provides compatibility with a wide range of transmitters and test equipment.


The MFJ-264 delivers excellent performance, providing a reliable and consistent load for testing transmitters. Its high power handling capability ensures accurate measurement of transmitter and amplifier combinations. Its stable impedance match minimizes reflections and signal distortion.

MFJ-264 Dry Dummy Load


  1. Convenience: The MFJ-264 eliminates the need for an actual on air transmitting. While providing a convenient and reliable means of load testing.
  2. Versatility: The dummy load is suitable for use with a wide range of transmitters, including HF, VHF, and UHF models.
  3. Accuracy: The stable impedance match and high power handling capability ensure accurate measurement of transmitter output power.


The MFJ-264 Dry Dummy Load offers excellent value for its affordability, reliability, and performance. It serves as an essential tool for amateur radio operators, technicians, and professionals involved in transmitter testing and measurement.

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MFJ-264 Dry Dummy Load Review:

The MFJ-264 Dry Dummy Load is a reliable and versatile tool that provides a convenient tool. I use it on HF and 6 meters mostly for low power tuning. However, I will fine tune around 500 watts quickly. It has never heated up, and the dummy load's SWR is well under 1:5. It has a rugged design, and fits nicely on a small shelf under the desk.

The performance has been accurate and consistent every time it was used. Whether you're a ham radio enthusiast or technician, the MFJ-264 Dry Dummy Load is a valuable asset to the shack or work bench. I like that it is a dry device, so no worrying about leaks.

I pair this with my Telepost LP-100A for highly accurate readings. Together, they make a fantastic duo for tuning my station.

MFJ-264 Dry Dummy Load Advantages

Having a dummy load, such as the MFJ-264 Dry Dummy Load, offers several advantages for amateur radio operators, technicians, and professionals involved in transmitter testing and measurements.


  1. Protecting Antennas: During transmitter testing or tuning, using a dummy load instead of a live antenna protects antennas from potential damage due to excessive RF energy or mismatched impedance. This is especially important when making adjustments to transmitters or amplifiers, as it prevents unintended radiation that could interfere with other devices or cause harmful interference.
  2. Accurate Power Measurement: A dummy load provides a stable and known impedance match (usually 50 ohms), and allows for accurate measurements of transmitter output power. By simulating the impedance of a real antenna, it ensures that power measurements are consistent and reliable, while providing valuable feedback for optimizing transmitter performance.
  3. Minimizing Interference: By absorbing the RF energy generated by the transmitter, a dummy load prevents the emission of unwanted RF signals that could cause interference to nearby electronic devices or neighboring radio operators. This helps maintain compliance with regulatory standards and ensures responsible operation within your allocated frequencies.
  4. Safe Testing Environment: Using a dummy load creates a controlled environment for testing transmitters without the risk of unintentional radiation. It allows operators to make adjustments, while performing diagnostics. This enables operators and technicians to conduct experiments safely and effectively.
  5. Versatility: Dummy loads are compatible with a wide range of transmitters, furthermore, they cover various frequency bands and power levels. They can be used for testing HF, VHF, and UHF equipment, making them a versatile tool for amateur radio operators and technicians.

Overall, having a dummy load provides amateur radio operators, technicians, and professionals a valuable tool for tuning and testing. By offering a safe, accurate, and versatile means of load testing, dummy loads play a crucial role in optimizing performance and ensuring responsible radio operation.

By Vince