iFlight 10pcs Grey 150mm Long 2.4G Replacement Receiver Antenna with IPEX Port for Futaba FRSKY &Frsky 2.4G Series Receiver Replacement antenna for Futaba, JR, FRSKY 2.4G receiver and other 2.4G receivers using same length antennas 150mm length,wire part 120mm,30mm transparent part,diameter:1.13mm With IPEX Connector, pull test &gt;1KG,radiator material CU,RG-113 cable,shielded part is made by silver material,with better electrical conductivity than tin material Antenna gain:1.5DBi+-0.5DBi,efficiency:90%,operating frequency: 2400 ~ 2500 MHz