... Impedance(OHM)50; Max-power(W)10;Gain(dB 433MHZ Spring coil antennas model: GBT-433-2.5DJ01 Electrical Data ModelGBT ... ,TT and so onFAQ :1,Q:what is you brand ? A: Gerbole antennas 2,Q:how can i get the sample ... ,there we can free for two sample to you 3,Q: how much the shipping cost will be for sample ? ... depend on the weight and packing size you are 4, Q :how can i get the price list ? A :please ...