... . Bidirectional ISO 9001:2000 certified standard & custom manufacturer RF Directional Coupler:Bi-directional Coupler —2400—2500MHz 40 dB N-F/BNC-F P ... property right and authority approval. The products are Power Splitter, Directional Coupler, RF Attenuator, Dummy Load, Cable Assembly, Connector, Filter, Duplexer ...