There are many applications in both civil and military installations where many receivers are in use concurrently, such as monitoring stations and in telecommunication shops. Usually, installing one antenna per receiver is impossible, hence so called distribution amplifiers are needed. The DA - 4 makes it possible to connect up to 4 receivers to one antenna without signal loss. Each receiver can be operated if it was connected to its own antenna. This is also an ideal solution for DX camps. For telecommunications shops the DA - 4 is of great advantage as receivers can be compared by receiving the same station, on the same moment with the same antenna, without switching over. The DA - 4 is in use at governmental- and military monitoring stations as well in AWACS aircraft.
The DA - 8 is equal to the DA - 4, but has 8 outputs instead of 4.