These compact broad band couplers operate over frequency bandwidths of 12 to 1 up to 36 to 1. Each coupler is constructed in a rugged aluminum housing with Stripline circuitry. The input, output and coupled output ports are stainless steel SMA connectors. The isolated port is terminated with a non-removable precision 50 ohm termination. Custom variations of these designs to specific requirements can also be produced.