MFJ Enterprises Original MFJ-260C Dummy Load, 300 Watt, 0-650 MHz, Dry 1-650MHz 300W Non-Inductive Dry Dummy Load. Great for testing and Repairing Amateur, Ham, CB & other Two Way Radios. Handles 300W for 30 seconds, & other lower powers for 5 mins or less on a listed power/time curve. Accepts a PL-259 Connector. Shielded Metal Housing.