This wide-band helical antenna propagates around tunnel bends in a Non-Line of Sight scenario and provides immunity to many of the signal disrupting objects such as trains and drilling machinery which appear to obscure the tunnel
delivering internet
It supports transport broadband
This antenna is Australian designed
and tablets in subterranean environments
RFI CD28-37-70 VHF Mopole Antenna, 138-163 MHz, 3 dB, Stud Mount, No Cable pre-made-coaxial-cables This wide-band helical antenna propagatesThe RFI CD28 37 70 VHF Mopole Antenna is a ground independent, broadband solution covering 138 163 MHz with a 3 dB gain boost over a conventional wave whip. Supplied with a low profile stud mount (cable not included), the antenna uses a patented end fed matching circuit sealed in a tough thermoplastic housing, while its flexible, tapered stainless steel whip shrugs off knocks and bends. Ideal for fleet, public safety, and industrial vehicles, it