The MFJ-948 Antenna Tuner is a high-quality tuner that operates in the frequency range of 1.8-30 MHz. It offers almost all the features of the world's leading 300-watt antenna tuner, the MFJ-949E. Equipped with a custom-designed inductor switch, 600-volt tuning capacitors, Teflon insulation washers, and a proper L/C ratio, the MFJ-948 ensures arc-free and worry-free operation with up to 300 Watts. It can tune any type of antenna, including dipoles, verticals, inverted vees, random wires, beams, mobile whips, and shortwave receiving antennas. Compatible with coax, random wire, or balanced lines, it comes with a heavy-duty 4:1 balun. The custom-designed inductor switch can withstand high RF voltages and currents. The MFJ-948 features an 8-position super antenna switch that allows you to select between two coax-fed antennas, a random wire/balanced line, or an external dummy load. It is equipped with a full-size lighted cross needle meter, which is 3 inches in size and provides easy reading of SWR, true peak forward power, and average reflected power simultaneously. The meter has an on/off switch and requires 12 VDC or can be powered via a mains adapter.