The M828G from Allis Communications is a GPS/GNSS Antenna with Frequency 1575.42 MHz (GPS) / 1585 MHz(Glonass), Gain 4 dBi, Noise Figure 0.9 dB, Voltage 2.7 to 5.5 V, Impedance 50 Ohms. Tags: Patch, Low Profile. More details for M828G can be seen below.