Coaxial RF adapters maintain the shielding of the coaxial cable, and are designed to work with radio frequencies. The fastening mechanism allows for high mating cycles and a reduction in the insertion force. In todays standard, ultra high frequencies are frequencies between 300 MHz and 3 GHz. 

The SMA connector has a screwable coupling mechanism and is the industry standard for antenna connection. The SMA connector is also used in many devices in the high-frequency range. SMA stands for sub-miniature version A. 

The N style coax connector is a medium sized RF connector which is threaded and weatherproof. It was one of the first connectors to carry microwave- frequency signals up to 14 GHz, but todays N connectors handles frequencies up to 11 GHz. The interface specifications for the N and many other connectors are referenced in MIL-STD-348

This is an SMA FEMALE TO N MALE ADAPTER; N-G-T

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