SCENE / TUNNEL

Tunnel & Utility Tunnel Radio Solution

Solves signal attenuation and comms dead zones in long linear spaces: highway/rail tunnels, utility tunnels, subway sections.

3 common tunnel radio problems

01
Signal fades with distance:Long, enclosed tunnels limit ordinary radio range.
02
Many curve/shaft blind spots:Bends, link corridors and shafts become signal dead ends.
03
Hard maintenance:Many devices in harsh environments; traditional fault finding is slow.

KINGTONE tunnel solution

CV120 fiber BDA

Fiber reach distributes signal evenly along the full tunnel.

CV310 ICS

Interference cancellation; same-frequency co-site deployment, saves freq.

RS3100 same-frequency repeater

No separate uplink/downlink; seamless tunnel/outside handover.

S200 NMS

Remote monitoring; fault located to the specific remote unit.

Typical project parameters

Parameter	Reference value
Coverage length	1–10 km
Topology	Fiber BDA + leaky cable/antenna
Terminals	30–200 units
Lead time	15–45 working days

Figures above are reference values from comparable projects; final configuration is subject to on-site survey and the contracted technical agreement.

CASE FILE

Case brief

A 3.2 km highway tunnel deployed CV120 fiber BDA + CV310 ICS + RS3100 same-frequency repeater + S200 NMS: full-tunnel no-blind-spot radio, maintenance and rescue teams can talk to the tunnel control center anytime.