GPS and BeiDou Dual Frequency Active Antenna Car DVD Navigation Antenna SMA-Male Length=3M

Description

Description

The GPS and BeiDou Dual Frequency Active Antenna (3M version) is a high-performance, externally mounted GNSS antenna specifically designed for automotive navigation systems, in-dash DVD players, head units, and other vehicle-based positioning applications requiring extended cable reach. Supporting both GPS L1 (1575.42 MHz) and BeiDou B1 (1561 MHz) frequencies, this antenna enables multi-constellation reception for faster Time-To-First-Fix (TTFF), improved positional accuracy, and more reliable navigation in urban canyons, tree cover, and other challenging environments.

The standout feature of this 3-meter variant is its extended cable length — 3 meters compared to the standard 1.5-meter version. This additional length provides significantly more flexibility when routing the antenna cable through large vehicles such as vans, RVs, buses, trucks, and boats. It allows the installer to route the cable discreetly behind dashboards, through A-pillars, across headliners, and to distant mounting locations without needing extension adapters or splices that can introduce signal loss.

This is an active antenna, featuring a built-in Low Noise Amplifier (LNA) that boosts weak satellite signals before transmitting them down the 3-meter cable to your navigation receiver. The integrated LNA has sufficient gain (28dB typical) to overcome the cable losses inherent in a 3-meter run (approximately 3.6dB loss for RG174 coaxial cable), ensuring that your GPS/BeiDou receiver receives a clean, strong signal even with the longer cable length.

The antenna is housed in a durable, low-profile, weather-resistant black casing with a magnetic base (or adhesive backing, depending on variant) for easy installation on metal surfaces. The 3-meter coaxial cable is terminated with a standard SMA male connector, which is compatible with the vast majority of car DVD navigation units, aftermarket head units, and GNSS receiver modules featuring an SMA female antenna port.

Key internal components include a high-gain ceramic patch antenna element and a high-quality LNA with low noise figure (≤1.5dB), ensuring excellent signal reception even in weak signal conditions. The antenna draws its operating power (3V–5V DC) directly from the navigation receiver through the same coaxial cable, requiring no external power source.

Whether you are installing a navigation system in a long-wheelbase van, a Class A motorhome, a semi-truck, a bus, a boat, or simply need extra cable length for a clean, professional installation in a standard vehicle, this 3-meter GPS/BeiDou dual-frequency active antenna delivers the reach and performance you require.

Key Features

• Extended 3-Meter Cable – Provides extra length for large vehicles (RVs, trucks, vans, buses, boats); eliminates the need for extension adapters

• Dual GNSS Band Support – Tuned for both GPS L1 (1575.42 MHz) and BeiDou B1 (1561 MHz) for multi-constellation navigation

• Active Amplification (LNA) – Built-in Low Noise Amplifier (28dB gain) boosts weak signals and overcomes 3-meter cable losses

• Low Noise Figure (1.5dB typical) – Minimizes signal degradation introduced by the amplifier

• SMA Male Connector – Standard connector compatible with most car DVD navigation units, head units, and GNSS receivers

• Magnetic Base Mount – Strong neodymium magnet secures antenna to any ferrous metal surface (roof, trunk lid, hood)

• Weather-Resistant Housing – Durable black ABS casing suitable for outdoor and vehicle roof mounting in all weather conditions

• Low Profile Design – Compact, discreet appearance when mounted on windshield, dashboard, or vehicle exterior

• Wide Operating Temperature – -40°C to +85°C, suitable for extreme automotive environments (desert heat to arctic cold)

• Right-Hand Circular Polarization (RHCP) – Matches GNSS satellite signal polarization for maximum signal transfer

• Plug-and-Play Installation – No external power required; antenna receives power directly from the receiver via coaxial cable

• High-Quality RG174 Coaxial Cable – Flexible, durable, and low-loss for reliable signal transmission over 3 meters

Technical Specifications