R57 Low PIM SMA Coaxial Switches Radiall R57 Low PIM (Passive Intermodulation) SMA Coaxial Switches meet the growing demand on wireless communication devices with higher data rates. The R57 switches are guaranteed at -160dBc with the same carrier level at +43dBm. With over two million cycles, high reliability, and superior RF performance, the Radiall R57 Low PIM SMA switches can be used in modular instrumentation, telecom equipment testing, and laboratory test benches.