Auto-Reference Ka-Band PLL LNB - DEMOAuto Reference: Automatically switch to internal PLL when external reference is not available. Norsats Low Noise Blocks (LNBs) provide signal reception for satellite communications around the world. We offer premium performance and reliability in the smallest form factor possible. All of our standard Ka Band LNBs are backed by a 3 year warranty and nearly forty years of experience as the industrys leading provider of high performance LNBs. 9000HX O3B