Product Review
The MFJ-260C is an air cooled, non-inductive Dry Dummy Load, in a perforated metal housing.
It has an SO-239 connector input for any cable with a PL-259 Connector.
It can handle a full 300 watt load for up to 30 seconds, with derating power / time curve to 5 minutes Silk-screened right on the unit for handy reference.
SWR below 1.1:1 to 30 MHz, 1.5:1 from 30 to 650Mhz.
It measures a super compact 2 1/4x2 1/4x7 inches.