Antenna ALLNET ANT-868-3dbi-OMNI 868 MHz omnidirectional 3.5 dBi N‑female

The ALLNET ANT-868-3dbi-OMNI is an omnidirectional 868 MHz antenna with 3.5 dBi gain and an N‑female connector. It is designed for wireless devices operating in the 868 MHz ISM band and provides near-uniform signal coverage around the installation point. The antenna supports short- to medium-range links, making it suitable for low-power wireless applications where consistent coverage and simple mounting are required.

Advantages

This omnidirectional antenna offers a balanced combination of moderate gain and wide horizontal coverage, enabling stable reception and transmission for devices placed within typical IoT and telemetry environments. The 3.5 dBi gain enhances link reliability without significantly narrowing the radiation pattern. The N‑female connector allows easy attachment to compatible cables and equipment, and the antenna's compact form factor simplifies installation in constrained spaces.

Suitable for

• IoT gateways and concentrators in the 868 MHz ISM band
• Alarm systems and security sensors requiring stable local coverage
• Telemetry units, environmental sensors and smart metering devices
• Short- to medium-range wireless links in industrial and commercial settings

Key specifications

• Frequency range: 868 MHz ISM band
• Gain: 3.5 dBi (omnidirectional)
• Connector type: N‑female
• Radiation pattern: omnidirectional (horizontal plane)
• Typical use range: short to medium range, depending on site conditions and transmitter power
• Form factor: compact rod-type antenna for straightforward mounting

How to use

Connect the antenna to the radio device or cable with a matching N‑male connector, ensuring a secure and hand-tight connection to avoid damage. Mount the antenna vertically to achieve an even omnidirectional radiation pattern around the installation point. Position the antenna clear of large metal obstacles and away from sources of interference where possible. For optimal performance, adjust the installation height and orientation based on site testing and signal measurements.

Recommendations

For reliable operation, verify device transmission power and local regulations for the 868 MHz ISM band before deployment. Use low-loss coaxial cable and properly matched connectors for installations requiring remote mounting. Perform a site survey to determine the best mounting location and to confirm expected coverage.