MFJ GrandMaster™ Cross-Needle SWR/Wattmeters If you will not settle for less than the best accuracy and precision then these handsome GrandMasters™ are for you. You get a 3-inch precision illuminated Cross-Needle meter for easy wide-angle viewing. Read SWR, forward and reflected power all in a single glance! Three-color scale gives you improved readability and reliability. LED backlight gives excellent night vision. Requires 13.8 VDC or 110/VAC operation. Each unit is precisely factory calibrated for accurate measurements. Air-Dielectric SO-239 connectors with gold plated center pins give superb performance to beyond 525 MHz. A functional and simple front panel layout lets you select power ranges, bands, or make SWR readings intuitively. All GrandMasters™ feature peak and average, forward and reflected power readings and have selectable power ranges. Each GrandMaster™ is housed in an all-metal cabinet with rubber feet and protected by a durable speckled black paint. A designer injection molded grey front panel perfectly matches any transceiver. 5 ½" x 3 ⅛" x 5".