Vesper GA™ 38 GPS/GLONASS Antenna f/Cortex® V1 & M1

The Vesper GA 38 GPS/GLONASS Antenna for Cortex V1 and M1 systems is a dual-constellation external antenna engineered to enhance positioning accuracy and reliability on modern marine vessels. By integrating both GPS and GLONASS satellite networks, this antenna provides redundancy and faster fix acquisition in challenging environments where single-system coverage may be compromised—particularly valuable when operating near coastal terrain, urban waterways, or under heavy cloud cover where signal reflection degrades performance.

Built into a low-profile water-resistant housing, the GA 38 measures 4 x 4 x 6 inches and weighs 0.8 pounds, making it compact enough to install with minimal visual impact on most hull configurations. The antenna supports three mounting solutions—pole, surface, and under-deck installation for fiberglass decks—allowing flexibility in placement to optimize signal reception based on your vessel's layout and construction. External antenna placement away from the helm station and cabin electronics eliminates interference and signal shadowing that often compromises internal antennas, translating to more consistent and accurate position reports for navigation, autopilot functionality, and electronic chart display systems.

This antenna is designed specifically for integration with Cortex V1 and M1 systems, ensuring compatibility with marine-grade electronics that demand robust, multi-constellation positioning data. Whether fishing offshore, cruising coastal waters, or operating in remote areas where GPS constellation gaps are common, dual-constellation reception reduces time-to-fix and improves long-term position stability—critical factors in precision navigation and safety at sea.

The GA 38 replaces internal antenna limitations with industry-standard external positioning architecture. Serious boaters upgrading from single-system receivers or troubleshooting coverage gaps in existing setups will find the performance lift measurable—faster acquisition, stronger signal hold in marginal conditions, and the redundancy that dual-constellation systems provide when one network experiences temporary degradation or signal loss.

Part number 010-13305-00 | UPC 753759318703 | SKU CW98551