Microlab TK-28 series 200W Cable Loads are intended for wireless applications, when extremely low PIM, Passive Intermodulation, is required. A typical application is terminating the unused port of a Hybrid Coupler used to combine different wireless signals. A broad frequency range of 300 to 2700 MHz covers the majority of wireless applications requiring low PIM performance.Air flow over the load is assumed, in order to meet the rated surface temperature.