Bkl electrical sma adaptorsconnectors to sma connectoradaptorscouplerssocket bkl 419101 the sma reverse connector to sma reverse socket adaptor is a standard reverse sma sub miniature a male to sma female standard used mainly for applications in the frequency ranges 1ghz to 18265 ghz depending upon the design the plug connector is considered as male and the socket as female depending upon the design of the inner conductor as metallic pin or as metallic pipe it has a high mechanic