Open Box MFJ SWR Antenna Analyzer 100KHz-230MHz and 2200 Meter band MFJ-259D

Open Box MFJ SWR Antenna Analyzer 100KHz-230MHz and 2200 Meter band MFJ-259D

The MFJ-259D is a portable and battery-powered tool used for analyzing RF impedance. It has four basic circuits that make it easy to measure a wide variety of antenna or impedance measurements. The tool is primarily designed for analyzing 50 ohm antenna and transmission line systems, but it can also measure RF impedances between a few ohms and several hundred ohms. Additionally, it can function as a signal source and frequency counter.

The accuracy of the tool is enhanced by using special microwave zero-bias Schottky detectors with matching compensating diodes, providing the best possible linearity with both high and low impedance loads. The A/D converter's 0.5 percent resolution is the primary limitation. The new "D" version of the tool has two frequency-range knobs that allow for lower-frequency coverage of 137 kHz, 472-479 kHz, and 160 through 1.25 meter antennas, including MW (AM broadcast) and shortwave frequencies. The extended coverage for the new 630 and 2200 meter bands makes the MFJ-259D even more versatile and essential for any RF impedance analysis needs.