TNC male-TNC R male coaxial cables are a type of cable used for transmitting high-frequency electromagnetic signals.

These cables have TNC male connectors on one end and TNC R (Reverse Polarity) male connectors on the other end.

The TNC (Threaded Neill-Concelman) connector is a type of threaded connector used in applications where a good connection stability is required.

The TNC R connector, on the other hand, has a reversed polarity compared to the standard TNC, meaning that the male connector has a protrusion instead of a cavity, and vice versa for the female connector.

This reversed polarity is used to prevent users from connecting unauthorized components, as TNC R connectors are incompatible with standard TNC connectors.