型号:TWX-150 Frequency range (MHz):138-174 MHz Attenuation ± 30 KHz (min):20 dB Attenuation ± 50 KHz (min):60 dB Impedance (nom):50 ohms VSWR (max):1.2:1 Input level (max):0 dBm Temperature:-20° to +70° C Dimensions (HWL) in. (cm):1 x 1 x 3.75 (2.5 x 2.5 x 9.5 Weight lb. (kg):0.5 (0.23)