5Pcs 433MHz Internal Build-in Spring Antenna Copper Solder 34mm

Specifications: ? Frequency:433Mhz V.S.W.R:<=1.5 Input Impedance:50 Ohm Gain:2dBi-3dBi Wire diameter:0.6mm Spring outer diameter:5mm Total Length include soldering part:34mm Connector Type:soldering directly ? Package Included: ? 5 x 433MHz Internal Spring Antenna