Overview

The Garmin 010-11454-00 is a 10 m (32 ft) antenna cable with BNC connectors on both ends for running an external GPS antenna to compatible Garmin marine electronics. It is used when the antenna needs to be mounted away from the display or black box so it can “see” the sky while the electronics stay protected at the helm, nav station, or inside the console.

On most boats, this is the clean way to reach a hardtop, radar arch, or mast mount without splicing coax. It is an antenna signal cable only and does not replace any power, NMEA 0183, or NMEA 2000 wiring.

Before ordering, confirm your equipment has a BNC antenna connection on the unit side and that your antenna lead also terminates in BNC. If your antenna or device uses SMA or another connector style, it will not mate directly.

Key features

• 10 m (32 ft) length for routing from a sky-view antenna location back to the electronics mounting position
• BNC connectors on both ends for systems that use BNC antenna ports
• Commonly paired with Garmin GA 38 passive GPS/GLONASS antenna installations that use a coax connection
• Used in Garmin AIS 600 installations that accept a BNC-connected GPS antenna feed
• Allows a single uninterrupted run to reduce loss and avoid in-line splices in wet lockers and cable chases

Compatibility and fit

This cable is a match when both the antenna and the receiving device use BNC for the antenna connection. It is typically used to link an external GPS antenna to a compatible Garmin chartplotter, AIS black box, or VHF/AIS system that supports an external antenna input. If your setup relies on a different connector type at either end, plan for the correct cable style rather than forcing a fit.

It is a good match for boats that keep electronics below deck or behind the helm and want the antenna mounted where it has a clean view of the sky, such as on a hardtop, radar arch, or a sailboat rail or mast bracket.

Installation and routing

Dry-fit the route first and leave a small service loop at both ends so the connectors are not under tension. When pulling through conduit or a rigging tube, protect the BNC ends from snagging and avoid tight bends that can kink coax. Secure the run at intervals to prevent chafe and vibration wear, especially where it passes through bulkheads or under a deck edge.

BNC connectors lock with a push and twist motion. Make sure each end is fully seated and locked, and keep any connector junctions out of standing water. In exposed areas, add strain relief and weather protection appropriate for your installation location.

Maintenance and care

Periodically inspect the cable where it is clamped and where it enters compartments, looking for flattening, chafe, or corrosion at the connectors. If you remove the cable during service, keep the BNC ends clean and capped until reinstalled to avoid contamination that can affect antenna performance.