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HD3-868 (Heavy-Duty 868 MHz ISM)

Heavy-Duty 868 MHz ISM Antenna


The HD3-868 is a low-profile, ground-plane-dependent antenna for 868–870 MHz ISM equipment in physically exposed installations.

  • Covers 868–870 MHz with 3 dBi peak gain.
  • Uses a black UV-resistant ASA dome rated IP67.
  • Mounts through the surface on a 5/8-18 threaded stud and includes a one-foot RG-58 lead with an SMA plug.

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

Product Description

The HD3-868 provides 868 MHz ISM coverage in a compact housing built for fixed equipment exposed to wear, vibration, and weather. Its vertically polarized element delivers 3 dBi peak gain across 868–870 MHz.

The antenna mounts through the equipment surface on a threaded stud and is designed to operate with a ground plane. A black ASA dome protects the element while keeping the installed height under one inch.

Ideal applications:

  • 868 MHz industrial telemetry
  • Fixed M2M equipment

Example Model Configurations: HD3-868

Key Specifications

Feature Specification
Technology ISM; RFID; fixed M2M
Frequency 868-870 MHz
Gain 3 dBi peak
Polarization Vertical
Connector / Cable

Connector: SMA plug (male); other connectors available

Cable: RG-58

Cable length: 1 ft (30.5 cm)

Mounting 5/8-18 × 0.50 in threaded stud; 3/4 in clearance hole; spacer/washer stack and hex nut
Ground Plane Required; at least 1.5 sq ft recommended
Dimensions 3.52 in diameter × 0.625 in high
Material

Housing: Black UV-resistant ASA plastic

Environmental Rating IP67
Environmental Qualifications EN 61373; IEEE 1478; MIL-810G
Operating Temperature -40°C to +80°C

Models & Configurations

Model / Configuration Configuration Details
HD3-868 868–870 MHz heavy-duty stud-mount antenna

Tech Documents & Resources

hd3-915-and-hd3-868-spec-sheet

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