The 82100 series of Coaxial Dynamics Plug-In Elements are calibrated to exacting specifications to assure interchangeability with one another, and with any instrument in the 1-5/8″ line size – whether purchased today or 20 years ago.We ensure element accuracy using RF Power Standards (NIST traceable) that are supported by more than 30 years of history and experience.Your confidence in the quality and dependability of the 82100 series of Plug-In Elements is assured with the Coaxial Dynamics Two Year Limited Warranty.Frequency Range: 50-125MhzPower Rating: 600 W Gold Plated For High Conductivity Interchangeable With Other Elements NIST Traceable Standards For Accuracy Rugged and Reliable Two Year Limited Warranty