RF coaxial connectors are essential for a good connection between the antenna, the cable and the terminal equipment. It is important that the used connectors have low VSWR and low insertion loss for the frequency at which they are being used. Several standard connector types exist, here are the most common types that we use:


SMA is one of the most commonly used RF connectors. It is usable up to 6 GHz for low-cost types, and 18 GHz for quality types. It has high mechanical strength and low VSWR. SMA also exist in a Reverse-Polarity version (RP).


FME is often used in low-cost vehicular installations. It is popular in the cellular market, but not recommended above 2 GHz.


N is the standard used for Base Station and other applications requiring high power. Good up to 18 GHz. It is a very reliable connector that can handle large diameter cable types.


TNC is the threaded version of a BNC. Good up to 11 GHz.


BNC is a very common bayonet-coupled connector, mainly used for DC and digital signals. Not recommended above 500 MHz.


MCX is a quality miniature snap-on connector. Good up to 6 GHz.


MMCX is quality miniature snap-on connector, even smaller than MCX. Good up to 6 GHz.


SMB is a quality snap-on connector. Good up to 4 GHz.


FAKRA is a standard used in the automotive industry. The coaxial part of the connector is the same as an SMB, but FAKRA has a plastic housing that is coded and colored to prevent wrong connections. FAKRA is also called SMBA by some manufacturers.


UHF connector is common in marine VHF equipment and on amateur (Ham) equipment. UHF connectors have different names for the male (PL-259) and female (SO-239).

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