Is the ARB92417.1 suitable for motorway, railway and subway tunnel coverage?

Yes. ARB92417.1 is a high gain broadband directional antenna designed for radio coverage in motorway, railway (including high-speed lines) and subway/metro tunnels, where controlled directivity and stable performance are required.

Can ARB92417.1 be used as a donor (pickup) antenna outside the tunnel?

Yes. Thanks to its high directivity and up to 18 dBi gain, ARB92417.1 is suitable as an outdoor donor antenna aimed at the serving site to feed repeaters/DAS systems at tunnel portals and along tunnel infrastructures.

Which services and bands are typically covered in 2300-2690 MHz?

The 2300-2690 MHz range is widely used worldwide for 5G/4G LTE and broadband wireless services, including FWA links and regional allocations such as IMT-E, WCS and MMDS depending on the country. ARB92417.1 supports these services with +/-45 deg dual polarization.

Does the antenna support MIMO and dual polarization operation?

Yes. ARB92417.1 is suitable for MIMO systems and uses +/-45 deg polarization with double independent feeding.

Which connectors are used on ARB92417.1?

The antenna is equipped with 2x 4.3-10 female connectors, enabling dual feed operation for MIMO/diversity architectures.

Is a flame retardant fiberglass radome available?

Yes. The antenna is supplied with a fiberglass radome as standard and a fiberglass flame retardant radome option is available (code ARB92417.1RI) for tunnel projects requiring this feature.

ARB92417.1 High Gain MIMO Tunnel Antenna 2300-2690 MHz +/-45° (18 dBi)

660 - 3800 MHz MULTI-BAND

ARB92417.1 is a high gain broadband directional antenna for 2300-2690 MHz, designed for 5G/4G LTE and wireless broadband systems in demanding tunnel environments.

With +/-45 deg dual polarization, double independent feeding (2x 4.3-10 female) and up to 18 dBi peak gain, it is ideal for motorway, railway (high-speed) and subway/metro tunnels and for outdoor donor (pickup) links feeding repeaters/DAS.

ARB92417.1 Independent Dual Feed Directional MIMO Yagi Antenna +-45° 2300 2690 MHz 18dBi

ELECTRICAL DATA

Frequency range (MHz): 2300 ÷ 2690

Bandwidth (MHz): 390

Nominal impedance (Ω): 50

Return loss / VSWR (dB): >= -14 / 1.5:1

Polarization: +/-45°

Gain Max 2300 ÷ 2500 MHz (dBi): 18

Gain Max 2500 ÷ 2600 MHz (dBi): 16

Gain Max 2600 ÷ 2690 MHz (dBi): 13.5

H/E beamwidth 2350 MHz -3 dB: 13°

H/E beamwidth 2450 MHz -3 dB: 13°

H/E beamwidth 2550 MHz -3 dB: 13°

H/E beamwidth 2650 MHz -3 dB: 14°

Connector: 2x 4.3-10f

Max power (W): 150

Lightning protection: All metal parts and inner connector are D.C. grounded

MECHANICAL DATA

Dimension length (mm): Ø 120 x 1350

Weight with clamps (kg): 5.2

Mounting (mm): Ø 80

Wind load front/side (180 Km/h) (kg): 1.8 - 25.8

Ice protection: fiberglass full radome

MATERIALS

Aluminium, Teflon, Copper, Brass, Silver 5 µm RoHS Compliant

ACCESSORIES

ARB92417.1RI: FIBERGLASS FLAME RETARDANT RADOME

ORDERING AND PACKAGING INFORMATIONS

ARB92417.1: FIBERGLASS STANDARD RADOME

ARB92417.1RI: FIBERGLASS FLAME RETARDANT RADOME

PACKAGING

Packaging typ.: 150 x 20 x 20 cm - 7 kg

High gain broadband coverage for 2300-2690 MHz infrastructures

The 2300-2690 MHz spectrum is widely adopted worldwide for 5G and 4G LTE capacity layers and broadband wireless services. Depending on national allocations, it includes deployments such as LTE TDD (e.g. 2300/2600 ranges), LTE 2600 and 5G NR (commonly mapped to bands such as n7 / n38 / n41), as well as regional services like IMT-E, WCS and MMDS. ARB92417.1 is engineered to support these use cases with broadband behavior and a highly directive radiation pattern.

Tunnel-first design, including donor (pickup) installations

In motorway tunnels, railway tunnels (including high-speed lines) and subway/metro tunnels, high directivity helps concentrate the RF energy where needed, reducing unwanted reflections and improving link stability for repeaters and distributed systems. For outdoor donor (pickup) scenarios at tunnel portals and infrastructure sites, the antenna can be aimed toward the serving sector to maximize the received signal margin and feed the radio equipment with greater robustness.

Dual feed, polarization and mechanical reliability

ARB92417.1 uses double independent feeding with +/-45° polarization and 2x 4.3-10 female connectors, making it suitable for MIMO architectures and polarization diversity. A fiberglass radome is supplied as standard for outdoor protection, with an optional flame retardant version available for tunnel projects. For enhanced system protection, all metal parts and the inner connector are D.C. grounded.

Antenna designed and manufactured in Italy.

Frequently asked questions about ARB92417.1

Quick answers for designers and installers working on tunnel radio coverage, donor links and broadband wireless systems in the 2300-2690 MHz range.

Which tunnels is this antenna intended for?

ARB92417.1 is designed for coverage in motorway tunnels, railway tunnels (including high-speed lines) and subway/metro tunnels, where high directivity helps control reflections and improves system stability.

Can it be used as an outdoor donor (pickup) antenna?

Yes. With up to 18 dBi peak gain and a narrow beam, ARB92417.1 is suitable for outdoor donor links feeding repeaters/DAS at tunnel portals and infrastructure sites.

What is the polarization and why is it useful?

The antenna uses +/-45° polarization with double independent feeding. This supports MIMO/diversity designs and helps reduce polarization mismatch in complex propagation conditions typical of tunnels.

Which connectors are fitted on the antenna?

ARB92417.1 is equipped with 2x 4.3-10 female connectors for dual feed operation.

Is a flame retardant radome available?

Yes. A fiberglass radome is supplied as standard, and an optional fiberglass flame retardant radome is available (ARB92417.1RI) for tunnel projects requiring this feature.

How is lightning protection handled?

All metal parts and the inner connector are D.C. grounded, supporting robust protection of the connected radio equipment.

ARB92417.1 High Gain MIMO Tunnel Antenna 2300-2690 MHz +/-45° (18 dBi) - Protel Antennas - Professional Antennas for Telecomunications