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Coax Connector Pictures

Coaxial Cable Connector Pictures

Here are some images of common coaxial cable connectors used for cellular signal booster systems and antennas.

Connector Gender - Male or Female?

For coax cable used in cellular antennas and booster systems, coax connector gender is many times different than nuts & bolts. Since coax cable has 2 strings of wire (the shield and the core), gender is determined by the middle (core) wire. If you look at a connector and it has a pin in the middle, it's a male. If the connector has a hole in the middle, it's a female. Well, except for Reverse Polarity (see below).

  • Pin in Middle - Male
  • Hole in Middle - Female

The coax connector on the left is an SMA Male connector. Note the pin in the middle.Coax Connectors

Reverse Polarity Connectors

To confuse things further, Reverse Polarity (RP) connectors are typically used for Wireless LAN (WiFi 2.4/5 GHZ) antennas & systems. The middle pin is the "reverse" of the connectors used in cellular systems. They will have the treading (inside or outside) the same however the pin / hole will be reversed. For example, a regular SMA Male Connector with have a pin in the middle and threads on the inside. A Reverse Polarity (RP) SMA Male will have the same threads on the inside but will have a hole in the middle. See pictures below.

TNC Male Connector

tnc-male-connector.jpg7/16 threaded coupling

TNC Female Connector



Mini-UHF Male

mini-uhf-male-connector.jpg 3/8-24 threaded coupling

Mini-UHF Female



FME Male Connector

fme-male-connector.jpg13/32 M8XP .75 thd.

FME Female Connector


SMA Male

sma-male-antenna-connector.jpg1/4 .250-36 threaded coupling

SMA Female


Reverse Polarity RP-SMA Male


1/4 .250-36 threaded coupling

Reverse Polarity RP-SMA Female


N Male

n-male-connector.jpgNote pin in the middle, threads on the inside.

5/8-24 threaded coupling

N Female

n-female-connector.jpgNote threads on the outside and hole in the middle.

F Male Connector (RG-6 Coax Cable)

f-male-connector.jpgThe F connector along with RG-6 cable is commonly used for cable & satellite TV

3/8-32 threaded

F Female Connector


BNC Male


BNC Female


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