This 50mm long antenna has 2dBi of gain and 50Ω impedance so it will work fantastically with just about any GSM frequency (850/900/1800/1900/2100) wireless receiver/transmitter or Cellular device. The antenna comes with a SMA connector, which is the most common type you'll see for Cellular development boards. We have also included a uFL to female SMA cable to make it easier to connect the antenna to your favorite gsm module.
UFL SMT Antenna Connector (4 Pack)
uFL connectors are very small surface-mount parts used when an external RF antena is desired but a big bulky SMA connector takes up too much space. We use this part..