Dummy loads are used to facilitate the off-air full power testing of an AM/MW transmitter in the event that the main transmitter or auxiliary transmitter fails and needs to be taken off the air for repair, servicing and eventual restoration to on air status. Kintronic Labs offers a complete line of convection or forced air cooled AM/MW dummy loads having an input impedance of 50 + j0 or an alternative impedance if required in the 530-1700kHz band. The Kintronic dummy loads are offered in indoor or outdoor weatherproof designs and are rated for transmitter input powers ranging from 1kw to in excess of 1,000 kw. Each Kintronic dummy load is rated for the transmitter carrier power plus continuous 125% positive peak modulation.