Product Review

MFJ 269C Pro Antenna Analyzer combine five basic circuits: a variable oscillator, frequency counter, frequency multiplier, 50 ohm RF-Bridge, and a 12-bit A-D converter and microcontroller. They perform a wide variety of useful antenna and RF impedance measurements, including coaxial cable loss and electrical distance to an open or short. Applications to 520 MHz allow operations through many commercial/government VHF/UHF bands. Primarily designed for analyzing 50 ohm antenna and transmission line systems, MFJ 269Cs measure RF impedances between a few ohms and several hundred ohms. An easily accessed user-controlled Z0 setting in the function menus allows for changing SWR and other SWR functions (i.e., return loss, reflection coefficient, match efficiency, etc.) to any normalized impedance value between 5 and 600 ohms. This feature is especially useful in 75 ohm and 300 ohm antenna systems.