Healthkit HM-15 Reflected Power Meter
HM-15 Specifications: Operation - Indicates percent power forward and reflected, and voltage standing wave ratio. Power handling capacity - One kilowatt RF. Impedance - 50 or 75 ohms, Frequency coverage - 160 through 6 meters. Meter - 100 microamperes. Dimensions - 9.25 X 3.62 X 2.62 inches.