The iGS18 from GEMS Navigation is a GNSS Splitters with Frequency 1.164 to 1.616 GHz, Gain -1 to 1 dB (Nominal), 9 to 11 dB (Amplified), Isolation 28 to 34 dB, Noise Figure 2.2 dB. Tags: Module With Connectors. More details for iGS18 can be seen below.