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Nissei RS-40 SWR Power Meter 140-150MHz 430-450MHz 200W for Ham Two-Way Radio Walkie Talkie NISSEI RS-40 SWR/POWER meters are of the highest quality. Measurement accuracy is between /- 5 to 10% depending on model. Insertion loss is typically less than 0.3 dB or lower.  Model: RS-40 Frequency Range: 140-150MHz,430-450MHzMeasurable Power Range: 0-200WPower Scale: 15W,60W,200WMaximum Power: 200WAccuracy-10W Range: (AVG) /- 10�curacy -100/1000W Range: (AVG) /- 5%Min.Power(Fwd) Measured:1WInput/Output Connector: MJ-MJ (BNC,N Optional)Insertion Loss: 0.3dB or LowerTesting Function: Forward,SWRInput/Output Impedance: 50 OHMDimension(W/H/D)mm: 70*78*30Weight(Net): 180g This SWR/Watt meter is a campact size for measuring Forward Power, and VSWR. RS-40 SWR & Power Meter can read out directly without any calibration.Low insertion loss structure allows it to be connected permanently.   ​