LTMG308 3-in-1 5G/LTE & GNSS Antenna

5G/LTE and GNSS Vehicle Antenna

The LTMG308 is a three-element low-profile vehicle antenna that provides 2×2 5G/LTE and active multi-constellation GNSS from one roof-mounted unit.

Key Features

Delivers reliable 2×2 5G/LTE connectivity across broad Sub-6 ranges.
Connects compatible radios across CBRS, Band 71, and FirstNet Band 14 frequencies.
Adds multi-constellation navigation and tracking without another roof antenna.
Consolidates three RF connections at one low-profile mounting point.
Rugged housing protects cellular and GNSS connections in harsh vehicle environments.

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Customization: Cable type, cable length, and connectors can be configured for specific installation requirements.

Product Description

Two Wideband Cellular Paths. Integrated GNSS.

The LTMG308 brings 2×2 5G/LTE connectivity and active GNSS into one low-profile roof-mounted antenna for fleet and transportation vehicles. Its three-element design supports cellular data, navigation, and tracking without requiring separate exterior antenna housings.

Wideband 2×2 Cellular: Two independently cabled elements cover 617–960 and 1710–6000 MHz for compatible 2×2 5G Sub-6 and LTE routers.

Coverage for Key Sub-6 Bands: The cellular range includes CBRS, Band 71, and FirstNet Band 14 frequencies for compatible radio equipment.

Multi-Constellation GNSS: The active positioning element supports GPS, Galileo, GLONASS, QZSS, and BeiDou at 1561, 1575, and 1602 MHz.

Rugged Multi-System Protection: The IP69K-rated stud mount helps keep dust and high-pressure water from reaching internal components. UV-inhibitive ASA, corrosion-resistant aluminum, and a −40 °C to +80 °C operating range protect against sun, moisture, extreme heat, and cold.

The LTMG308 provides wideband cellular and positioning capability through one compact vehicle mounting point.

Ideal Applications

2×2 5G/LTE vehicle routers
Fleet and transportation vehicles
CBRS-connected mobile equipment
FirstNet Band 14 radio installations
Vehicle navigation and tracking

Example Model Configurations: LTM308-3C3C2C-WHT-180, LTMG308-3C3C2C-WHT-180, MLTMG308-3C3C2C-WHT-180, LTMG308-3C3C2C-BLK-180

Key Specifications

Feature	Specification
Technology	4G LTE, 5G NR, 5G RedCap, GNSS
Frequency	Cellular: 617–960 MHz; 1710–6000 MHz GNSS: 1561 MHz; 1575 MHz; 1602 MHz
Gain	Cellular: 3 dBi at 617–960 MHz; 4 dBi at 1710–6000 MHz GNSS: 5 dBi; 26 dB ±3 dB LNA
Configuration	2 × cellular; 1 × GNSS
Bands	5G NR: n1, n2, n3, n5, n7, n8, n12, n13, n14, n18, n20, n25, n26, n28, n29, n30, n34, n38, n39, n40, n41, n46, n47, n48, n53, n65, n66, n67, n68, n71, n77, n78, n79, n80, n81, n82, n83, n84, n85, n86, n89, n90, n95, n97, n98, n100, n101, n106 LTE: 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 13, 14, 17, 18, 19, 20, 22, 23, 25, 26, 27, 28, 29, 30, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 46, 47, 48, 49, 52, 53, 65, 66, 67, 68, 69, 71, 85, 103, 106, 111
MIMO	Cellular: 2×2 MIMO
Polarization	GNSS: RHCP
GNSS Bias	2.7–5 VDC; Current 20 mA maximum / 10 mA typical
Connector / Cable	Connectors: All paths: SMA plugs Cable: Cellular: LL-195; GNSS: RG-174 Length: All paths: 15 ft (180 in); other lengths available
Mounting	Feed-through / stud mount; 1 sq ft ground plane recommended for stud mount
Dimensions	5.50 in (139 mm) × 2.38 in (60 mm)
Material	Housing: UV-inhibitive ASA plastic Base: Corrosion-resistant aluminum
Environmental Rating / Qualifications	Ingress: IP69K for stud mount Qualifications: IEEE 1478; EN 61373; MIL-810G; TIA-329.2-C Standards: RoHS compliant
Operating Temperature	−40°C to +80°C

Models & Configurations

Model / Configuration	Configuration Details
LTM308-3C3C2C-WHT-180	2× 5G/LTE elements; 1× GPS element; Stud / through-hole; White radome; 2× LL-195; 1× RG-174; 3× SMA Plug; All cables: 180 in (15 ft)
LTMG308-3C3C2C-WHT-180	2× 5G/LTE elements; 1× GLONASS/GPS element; Stud / through-hole; White radome; 2× LL-195; 1× RG-174; 3× SMA Plug; All cables: 180 in (15 ft)
MLTMG308-3C3C2C-WHT-180	2× 5G/LTE elements; 1× GLONASS/GPS element; Magnetic mount; White radome; 2× LL-195; 1× RG-174; 3× SMA Plug; All cables: 180 in (15 ft)
LTMG308-3C3C2C-BLK-180	2× 5G/LTE elements; 1× GLONASS/GPS element; Stud / through-hole; Black radome; 2× LL-195; 1× RG-174; 3× SMA Plug; All cables: 180 in (15 ft)