WITH CENTER GROUND TAP KEEPS THE UNUSED TERMINAL ALWAYS GROUNDED ROTARY SELECTING SWITCH FREQUENCY: UP TO 600 MHz V.S.W.R.: LESS THAN 1.2:1 POWER RATING: 1 KW (CW) IMPEDANCE: 50 OHMS INSERTION LOSS: LESS THAN 0.2dB ISOLATION: BETTER THAN 50 dB