APITech Datasheets for DC Blocks

DC blocks prevent the flow of direct current (DC) through radio frequency (RF) circuits. They serve as high-pass filters that prevent DC voltages, which have a frequency of zero Hertz (Hz), from interfering with sensitive RF components such as receivers. In other words, DC blocks are capacitors in series with a transmission line. They prevent the flow of DC energy while allowing RF signals to pass with little (if any) attenuation.  
DC Blocks: Learn more

Product Name Notes
Inmet inner DC blocks have a capacitor in-series with the center conductor which prevents the flow of audio and direct current (DC) frequencies while offering minimum interference to RF signals...
Weinschel Inside dc Block contains capacitance in-series with the center conductor to prevent the flow of dc current, while permitting RF power to flow without interrup tion. Low SWR -...
Weinschel Inside DC Block contains capacitance in-series with the center conductor to prevent the flow of dc current, while permitting RF power to flow without interruption. Low SWR - Maximum...