Silicon Tuning Diode (extended frequency range up to 2.8 Ghz special design for use in TV-sat indoor units) From old datasheet system Silicon Tuning Diode (extended frequency range up to 2.8 Ghz ; special design for use in TV-sat indoor units) 硅调谐二极管(扩展频率范围高2.8千兆特别设计了一种用于电视使用坐在室内单元)