Garmin Mast Cable - 40M (131')

The Garmin Mast Cable - 40M (131') is a professional-grade antenna extension cable engineered for marine, aviation, and tactical communications systems that demand reliable signal transmission over extended distances. Designed to integrate seamlessly with Garmin GPS and communication equipment, this 40-meter cable enables operators to position antennas away from primary equipment installations—a critical requirement in field operations, vehicle-mounted platforms, and base station setups where antenna placement directly impacts signal clarity and range. Law enforcement, military, and emergency response teams rely on extended mast cables to achieve optimal RF performance in environments where compact antenna positioning is either impossible or tactically disadvantageous.

This cable features precision-engineered coaxial construction that minimizes signal loss across the full 131-foot length—critical for maintaining signal integrity in high-frequency tactical communications. The connectors are engineered to Garmin specifications (MPN 010-12117-05), ensuring impedance matching and secure connections that prevent intermittent dropouts common in lower-grade extensions. The 1.8-pound weight and compact 6 x 2 x 6-inch package dimensions make field deployment and repositioning straightforward, while the durable construction withstands outdoor environments, vibration, and repeated handling typical of mobile tactical operations. The cable's shielding protects against electromagnetic interference, an essential consideration in dense urban operations or environments with competing RF sources.

This extension cable is ideal for command vehicles, fixed observation posts, maritime vessels, and aircraft installations where antenna separation from receiver units exceeds standard cable lengths. Tactical operators benefit from the flexibility to mount antennas on external masts, rooftops, or elevated positions that maximize line-of-sight coverage while keeping sensitive electronics protected inside shielded compartments. Compatibility with Garmin marine-grade and aviation-rated GPS systems makes this cable essential for any installation where extended cable runs are operationally necessary. Installation is straightforward—simply connect between the primary equipment and antenna connector, ensuring all connections are hand-tightened and weatherproofed for field durability.