Transient Limiter protects spectrum analyzer input from damage caused by high level transients from LISNs ( Line Impedance Stabilization Networks ) during EMI testing. Features: Frequency Range: 9 kHz to 200 MHz Insertion Loss: 10 dB Maximum Input Level: 2.5 W (+34dBm) continuous; 10kW for 10’S Peak; 12 VDC