The FrSky Zipp 9 is the 900MHz high-gain antenna which has the stronger signal and longer control for the directional range. It works compatible with all FrSky 900MHz R9M modules and new coming modules./>Specifications/>
Frequency Range: 860~880MHz / 902MHz~928MHzPeak Gain: <4.29dBi (868MHz) / <4.68dBi (915MHz)S11: <-10dBInput Impedance: 50Ω