The VIAVI GC‑130 GPS Antenna Coupler is designed to address poor GPS coverage in hangars or support situations requiring static or dynamic GPS signal simulation. It delivers over 20 dB of antenna isolation with less than 1 dB repeatability and accommodates GPS antennas up to 14 inches in diameter. Built with a rugged design for ramp use, it enables reliable GPS simulation in low‑coverage environments. When paired with the GPSG‑1000 GPS Simulator, it supports almanac and time‑of‑day updates, sensitivity testing, dynamic simulation to mimic aircraft movement, and evaluation of GPS and transponder latency.

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