YKS 5.8GHz Circular Polarized Mushroom Antenna RP-SMA Female Plug Set RX/TX set for RC 5.8G Transmitter and Receiver (Right angle inner hole) Polarization: RHCP, Right Hand Circular Polarization. Frequency: 5645-5945MHz. VSWR: SWR &lt; 1.2 Circularly polarized for reduced interference Runs on 5.8 GHz commonly used for FPV system Right angle RP-SMA Plug (female plug / inner hole)