MFJ-948 1.8 – 30 MHz 300W Tuner W-O/DL


Introducing the MFJ-948 1.8 – 30 MHz 300W Tuner W-O/DL – your ultimate solution for effortless antenna tuning! With its exceptional features and robust construction, this manual tuner is built to handle high RF voltages and provide arc-free operation across a wide frequency range.


Designed with precision, the MFJ-948 boasts a custom inductor switch that can withstand extreme RF voltages and currents, ensuring durability and reliability. Say goodbye to worries about burnt-out components – this tuner is engineered to last.

Versatility is at the heart of the MFJ-948. It effortlessly tunes out SWR on a variety of antennas, including dipoles, verticals, inverted vees, random wires, beams, mobile whips, and shortwave receiving antennas. Whether you’re using coaxial, random wire, or balanced lines, this tuner has got you covered. Equipped with a heavy-duty 4:1 balun, it efficiently matches impedance, optimizing your antenna system’s performance.

MFJ-948 - 1.8-30 MHz 300W Tuner W-O/DL The convenience of the 8-position super antenna switch sets the MFJ-948 apart. It allows you to effortlessly select between two coax-fed antennas, a random wire/balanced line, or an external dummy load (not included), all directly through your tuner or straight to your transceiver.

Gone are the days of squinting at tiny meters. The MFJ-948 features a full-size 3-inch lighted cross-needle meter, allowing you to easily read SWR, true peak forward power, and average reflected power simultaneously. With the lamp’s on/off switch, you can control the backlighting to suit your preference. Power your meter with either 12 VDC or 110 VAC by using the MFJ-1312D.

But that’s not all! The MFJ-948 comes with a scratch-proof Lexan multi-coloured front panel, ensuring longevity and readability. Its superior cabinet and construction further enhance its durability, making it the ideal companion for your antenna setup.

With its impressive specifications, including a frequency range of 1.8 – 30 MHz, power handling up to 300W, and a compact size of 260 x 190 x 83 mm, this tuner is a powerhouse in a small package. MFJ-948 - 1.8-30 MHz 300W Tuner W-O/DL

Weighing just 1.65 kg, it’s lightweight and highly portable, making it perfect for both stationary installations and on-the-go enthusiasts.

Experience hassle-free antenna tuning like never before with the MFJ-948 1.8 – 30 MHz 300W Tuner W-O/DL. Unlock the maximum potential of your antennas and enjoy optimal performance across various frequencies. Take control of your signals with this top-of-the-line tuner.


  • Frequency: 1.8 – 30 MHz
  • Power: 300W
  • Meter: Cross needle
  • Size: 260 x 190 x 83 mm
  • Weight: 1.65 kg
  • VSWR & power meter 30/300W
  • Inductor selector
  • Sockets SO239
  • Terminals for wire and balanced lines
  • Antenna bypass switch
  • Tuning and reactance controls
  • 3-way selector

Additional information

Weight 1.8 kg