SMA connector Helical 433MHz 2.5dBi antenna for LRS receivers (EzUHF RX, Chainlink Dre Rx, etc. ..). Note: EzUHF Rx no includedFEATURES: Gain 2.5 dBi Frequency 429-436 MHz VSWR ≤1.8Impedance 50 Ohm Max Input power: 50 WConnector SMA Dimensions: 4.5 Cm Weight: 6 gr.