The single outputC138 LNBF model incorporates the latest in filter technology to attenuate the interference caused by5G, RADAR, wide area WiFi, WiMax and 4G LTE. Important Notice: This LNBF is designed to attenuate signals that are outside the target 3.8 - 4.2GHz C-band downlink frequency range and overloading the LNB and corrupting the signal IF conversion.