Antenna ALFA Alfa LoRa/HaLow 915 MHz 5 dBi N-male (AOA-915-5ACM)

The ALFA Alfa LoRa/HaLow 915 MHz antenna is a purpose-built external antenna offering 5 dBi of gain with an N-male connector, designed for use in the 915 MHz ISM band. It is compatible with LoRa and IEEE 802.11ah (HaLow) devices and intended to improve range and signal stability for gateways, base stations and outdoor IoT installations. The antenna's characteristics focus on extending low-power wide-area network coverage while maintaining a durable interface for common outdoor mounting and cabling configurations.

Advantages

This external antenna delivers a moderate directional gain of 5 dBi to increase link range and reduce packet loss in many low-power wide-area networking scenarios. The N-male connector provides a secure, industry-standard mating for outdoor coax cables and connectors, simplifying integration with gateways and base stations. Its operating frequency centered on 915 MHz makes it suitable for devices that use LoRa modulation and the HaLow variant of IEEE 802.11 for extended-range IoT communication. The antenna is optimized for improving signal stability in installations that require longer reach than typical onboard or rubber-duck antennas can provide.

Suitable for

• LoRa gateways and nodes operating in the 915 MHz ISM band
• IEEE 802.11ah (HaLow) access points and client devices for extended-range Wi‑Fi
• Outdoor IoT installations requiring improved uplink/downlink range and stability
• Base stations and fixed installations where an N-male connector is preferred for cabling

When it may not be suitable

This antenna is designed specifically for the 915 MHz ISM band and will not perform optimally outside that frequency range; using it on frequencies significantly different from 915 MHz can result in reduced gain and mismatched impedance. It also may not be appropriate for applications that require omnidirectional coverage at very short ranges, or for devices with integrated, non-removable antenna interfaces that are not compatible with an external N-male connection.

Key specifications

• Operating frequency: 915 MHz ISM band
• Gain: 5 dBi
• Connector type: N-male
• Antenna type: External, fixed-mount style for outdoor/indoor use
• Polarization: Vertical (typical for monopole/whip-style antennas)

How to use

Mount the antenna in a location with a clear line of sight to the intended coverage area whenever possible to maximize range and signal stability. Attach the antenna to the gateway, base station or coaxial feed using the N-male connector; ensure connectors are tightened securely but not over-torqued. For outdoor installations, use weatherproofing measures on the connector interface and route coaxial cable to minimize water ingress. After installation, verify radio settings on your LoRa or HaLow device, run a link-quality test and adjust antenna placement or orientation if necessary to achieve the desired coverage.

What to consider before purchase

• Verify that your device supports an external antenna and has a compatible N-type female connector or appropriate adapter
• Confirm that local regulations permit operation in the 915 MHz ISM band for your intended use
• Assess mounting options and whether additional mounting hardware or weatherproofing materials are required
• Consider cable length and loss when planning placement relative to the radio to maintain adequate signal level

Usage recommendations

For best long-range performance, install the ALFA Alfa LoRa/HaLow 915 MHz antenna as high as practical with minimal obstructions, use low-loss coaxial cable, and seal outdoor connections. Test different orientations and positions during commissioning to identify the optimal placement for your gateway or base station.