AR1021.1 High Gain Yagi Tunnel Antenna 790-960 MHz | LTE GSM GSM-R FRMCS - Protel Antennas - Professional Antennas for Telecomunications

The AR1021.1 is a professional high-gain yagi antenna engineered for the 790-960 MHz mobile band, covering LTE/5G low-band (800/900), GSM 900 and GSM-R, with a frequency range suitable for FRMCS-ready deployments where spectrum and system design require operation in the same band.

Thanks to its directional pattern and high gain, the AR1021.1 is commonly selected for road and motorway tunnels, railway tunnels, subway tunnels, underground transport corridors and technical galleries where controlled coverage is needed. It is also ideal as a donor antenna for BTS-facing links, repeaters and DAS nodes, supporting stable link budgets and precise aiming in constrained environments.

The antenna is supplied with a robust full fiberglass radome to protect the radiating structure against shocks, dust and harsh weather conditions. For critical infrastructures and projects with strict safety requirements, an optional flame-retardant fiberglass radome is available (AR1021.1RI).

All metal parts are D.C. grounded, improving protection against electrostatic discharge and helping the overall lightning protection concept when integrated with proper site grounding practices.

Antenna designed and manufactured in Italy.

Frequently asked questions about AR1021.1

Key answers about the AR1021.1 high-gain tunnel yagi antenna for LTE/5G 800-900, GSM 900, GSM-R and FRMCS-ready systems.

Where is the AR1021.1 typically used?

The AR1021.1 is designed for professional mobile radio coverage in road/motorway tunnels, railway tunnels and subway tunnels, as well as underground corridors and technical galleries where a high-gain directional antenna is required.

Can it be used as a donor antenna for repeaters and DAS?

Yes. The high gain and directional pattern make AR1021.1 suitable as a donor antenna towards BTS, repeaters and DAS nodes, enabling controlled aiming and stable link budgets in transport corridors and critical infrastructures.

Which mobile standards and bands does it support?

The operating band (790-960 MHz) covers LTE 800/900, GSM 900 and GSM-R. It is also suitable for 5G low-band deployments in the 800/900 MHz range where used by operators, and for FRMCS-ready projects depending on national spectrum allocations.

What is the advantage of the flame-retardant radome option?

The AR1021.1RI option provides a flame-retardant fiberglass radome for confined environments such as tunnels, where fire behaviour and safety requirements are strict. It also offers robust mechanical protection against shocks, dust and aggressive agents.

How is lightning / ESD protection handled?

All metal parts are D.C. grounded. In professional installations this should be integrated into the site grounding concept (mast grounding, bonding and surge protection) according to project specifications.

Related topics and searches

Typical queries and applications related to the AR1021.1 and similar Protel tunnel antennas:

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