66089 U.FL Antenna Anaren 66089 U.FL antennas are designed for quick connection to RF modules featuring U.FL connectors. These antennas have been certified to meet “intentional radiator” requirements for low-power and non-licensed devices (FCC, IC, and ETSI). The 66089 U.FL antennas feature a 50Ω impedance, 3 dBi gain, and an omnidirectional radiation pattern. These antennas are intended for applications where an embedded antenna module is impractical, such as a radio module mounted inside a shielded enclosure.