ITEM NAME:1 pcs 433MHZ GSM GPRS SMA Male Plug Straight Ham Radio Antenna G9B0 L O7A2 E3R0 Description&Preview.Frequency Range: 433MHZ. 1 433MHZ antenna. connector : SMA male. Polarization : Vertical. You can follow below process to chontact us. Impedance: 50 V.