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The WM150M measures and displays forward power,  reflected power,and SWR simultaneously on it's dual movement meter system in the frequency range. Accuracy of the readings is assured because the WM150 features a true shielded directional  coupler. The backlitmeter can display either peak or average power readings, and has 300 and 3000 watt range settings. QST found that the WM150 is the only wattmeter that has true Active Peak Reading and one of the few meters out there that can measure up to 1.5kW. You can read the entire QST July 2002 review here. As on all Palstar tuners the front panel and top cover are powdercoated.  * Specifications........  * Peak/Average power readings: 300 and 3000 watt range  * Frequency range: 1.8 MHz to 60 MHz  * True shielded directional coupler  * Displays forward power, reflected power, and SWR  * Dual movement meter system  * PL259 Coax connector  * 4 3/8"W x 1"D x 2 3/8"H coupler-14' cable  * Top cover is powder coat finished  * 115VAC to 12VDC adapter is included  * Dimensions: 4.5" wide x 3.25" high x 3.25" deep  * Weight 1.2 lbs./0.55 Kg