The SGGP.18.4.A.08 from Taoglas is a GPS/GNSS Antenna with Frequency 1575.42 MHz / 1602 MHz, Gain -1.07 to -0.98 dBi, Efficiency 78 to 80 %, Impedance 50 Ohms, Return Loss 10 dB. Tags: Patch, Ceramic, Low Profile. More details for SGGP.18.4.A.08 can be seen below.