Vodafone has commissioned a new type of conical multi-band mobile antenna for more stable 5G coverage in tunnels. Five of these antennas are being used in the 1,400-meter-long Arlinger Tunnel near Pforzheim, ensuring good mobile reception on the Vodafone network. The mobile antenna from the Swedish telecom equipment manufacturer Ericsson supports multiple frequency bands and is specifically designed for use in tunnels.

source: Vodafone press release:https://newsroom.vodafone.de/5g-in-tunneln