Microlab FXR HR-D77 DC Block, Inner, 380-2700 MHZ, DIN M & DIN F Connectors

Microlab DC Blocks are used to prevent the flow of direct current and low frequency current surges along the inner conductors of a transmission line, while permitting the unimpeded flow of RF signals. Applications include the blocking of current surges that can occur in subway tunnels and rail systems, at base-station/cell-sites during lightening storms, to route DC to tower mounted amplifiers (TMA's) or whenever DC isolation is required.