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LTMG312 (LMR/P25, WiFi 6E, GNSS)

LMR/P25, Wi-Fi 6E, and GNSS Antenna


The LTMG312 is a surface-mount antenna compatible with the Motorola APX4500 P25 radio for vehicle fleets. It supports high-power LMR communications alongside onboard wireless data and satellite positioning, addressing the combined communications requirements of fleet and public transportation installations.

Key Features

  • 100 W LMR/P25 capability at 769-805 MHz
  • Wi-Fi 6E coverage
  • Active multi-constellation GNSS
  • IP69K protection with stud mounting when properly mounted

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

Product Description

LMR, Data and Positioning for APX4500 Vehicle Installations

The LTMG312 serves fleet and public transportation installations using Motorola APX4500 P25 radios. Its LMR connection supports vehicle radio communications, while the Wi-Fi and GNSS connections serve additional onboard equipment for wireless networking and location functions.

Power Handling for Vehicle P25 Radios

The LMR element covers 769-805 MHz with a 100 W maximum input rating, supporting high-power vehicle radio operation within that frequency range.

Local Networking and Fleet Positioning

Wi-Fi 6E coverage includes 2.4-2.5 and 4.9-7.2 GHz for local wireless access. The active GNSS element supports GPS, Galileo, GLONASS, BeiDou and QZSS for vehicle positioning and fleet management.

Protection for Daily Fleet Service

The stud-mount version carries IP69K protection when properly mounted. Its UV-inhibitive ASA radome, corrosion-resistant aluminum base and shock- and vibration-resistant construction suit exterior vehicle service with exposure to water, sunlight and movement.

Ideal Applications

  • LMR/P25 radio communications in Motorola APX4500 vehicle installations
  • Wireless networking and vehicle positioning for fleet management
  • Onboard radio communications and data access for public transportation

Example Model Configurations: LTMG312-3C3C2C-WHT-180

Key Specifications

Feature Specification
Technology GNSS, LMR/P25, Wi-Fi 6E
Frequency

LMR/P25: 769–805 MHz

Wi-Fi: 2.4–2.5 GHz; 4.9–7.2 GHz

GNSS: 1561, 1575, and 1602 MHz

Gain

LMR/P25: 2 dBi

Wi-Fi: 5 dBi

GNSS: 4 dBic antenna; 26 dB ±3 dB LNA

Configuration 1 × Wi-Fi; 1 × GNSS; 1 × LMR/P25
GNSS Bias 2.7–5 VDC; Current 10 mA typical / 20 mA max
Connector / Cable

Connectors: All paths: SMA plug

Cable: LMR/P25 and Wi-Fi: LL-195; GNSS: RG-174

Length: All paths: 15 ft (4.572 m)

Mounting 7/8 in (22 mm) feed-through; 3/4 in (19 mm) thread for surfaces up to 1/2 in (13 mm); 1 sq ft ground plane recommended for stud mount
Dimensions 5.50 in diameter × 2.38 in high (139 × 60 mm)
Material

Housing: ASA UV-inhibitive plastic

Base: Corrosion-resistant marine-grade aluminum

Environmental Rating / Qualifications

Ingress: IP69K (stud mount, when properly mounted)

Qualifications: IEEE 1478; EN 61373; MIL-810G; TIA-329.2-C

Standards: RoHS and REACH compliant

Operating Temperature −40°C to +80°C

Models & Configurations

Model / Configuration Configuration Details
LTMG312-3C3C2C-WHT-180 1× Wi-Fi element; 1× LMR/P25 element; 1× GLONASS/GPS element; Stud / through-hole; White radome; 2× LL-195; 1× RG-174; 3× SMA Plug; All cables: 180 in (15 ft)

Tech Documents & Resources

LTMG312 Spec Sheet Rev 1

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