Case Study: The "Connectivity Gap" – 200Mbps via Mast-Head LTE
This network engineering project demonstrates the use of advanced RF (Radio Frequency) engineering to defeat severe geographical infrastructure limitations. Faced with a £10k+ fiber installation barrier, Kent ITS bypassed traditional landlines entirely by building an on-site wireless local loop. By utilizing an integrated mast-head processing architecture, the design eliminates high-frequency coaxial signal degradation by converting cellular signals to digital data directly at the antenna focus. Featuring Category 18 carrier aggregation, specialized atmospheric surge protection, and a managed wireless mesh integration, this project successfully delivered 200Mbps speeds to a remote facility, proving that precision radio engineering can substitute for costly civil infrastructure.
The Challenge
A newly constructed remote facility was left completely isolated from traditional telecommunications networks. Openreach quoted civil engineering and trenching costs exceeding £10,000 to bring a dedicated fiber or copper line to the site, creating an immediate project standstill. The facility strictly required high-speed, low-latency internet to support open guest WiFi networks for its members alongside a static public IP address to allow for secure, encrypted inbound VPN remote monitoring.
Typical consumer-grade deployments fail in these environments because providers install an internal cellular router coupled to an external antenna via long coaxial cables. At high 4G/5G radio frequencies, the signal loss ($dB$ attenuation) across coaxial cabling is incredibly severe, often reducing the captured signal to an unusable state before it ever reaches the router's modem. The core challenge required capturing weak, distant cellular signals at peak strength and delivering it into the local network without cable-borne signal degradation or exposing the internal network to atmospheric electrical hazards.
The Solution
1. Mast-Head Processing & Advanced RF Engineering
To completely eliminate coaxial signal loss, Kent ITS deployed a specialized MikroTik LHGG integrated dish architecture mounted to a 6-foot external mast. This system places the cellular modem and high-gain directional antenna inside a single weatherized enclosure at the focal point of the dish. By processing the raw radio frequency waves at the mast-head, the cellular signal is immediately converted into standard digital data packets directly at the source, ensuring maximum signal capture and link quality.
2. Digital Transport & Industrial Cabling
Once converted at the mast-head, the data is transmitted down into the facility using heavy-duty, external-grade Category 6 SFTP (Shielded and Foiled Twisted Pair) copper network cabling. Because digital Ethernet signals suffer zero degradation over these distances compared to raw RF cables, the internal router receives an uncompromised, full-strength data stream regardless of mast height or cable length.
3. Carrier Aggregation Hardware Optimization
Rather than utilizing basic Category 4 cellular equipment which binds to a single wireless frequency band, Kent ITS sourced an advanced Category 18 radio subsystem. This hardware level unlocks multi-band "Carrier Aggregation," allowing the modem to establish simultaneous, concurrent connections across multiple cellular frequency bands at once. This significantly multiplies the aggregate network throughput and stabilizes low-latency data streams even during peak cell-tower congestion windows.
4. Electrical Integrity & Surge Hardening
To safeguard the internal network assets from lightning strikes and atmospheric static build-up inherent to high external masts, a rigorous electrical grounding framework was integrated. A dedicated, heavy-duty inline network surge protector was installed at the building's entry point, bonded directly via a low-resistance functional earth drain lead back to the facility's MET (Main Earthing Terminal).
5. Local Mesh Distribution & Remote Access Routing
The incoming high-speed digital link was fed into a managed network switch and distributed across the facility using a Ubiquiti UniFi Access Point wireless mesh array, ensuring seamless coverage for on-site members. Simultaneously, the WAN interface was configured with a static public IP address, facilitating secure inbound VPN tunnels for encrypted, real-time remote monitoring and administrative site management.
Project Outcomes
- Enterprise-Grade Throughput: Achieved a highly stable, symmetric 200Mbps downstream connection in a geographic dead zone previously deemed completely offline.
- Massive Capital Savings: Eliminated over £10,000 in upfront Openreach civil trenching costs, delivering a fully operational network topology for a small fraction of traditional leased-line capital expense.
- Secure Remote Infrastructure Monitoring: Enabled continuous, encrypted remote facility management and closed-circuit security auditing via a dedicated static public IP and hardware-level VPN termination.
- Atmospheric Surge Protection: Guaranteed long-term system survivability against static and transient over-voltage surges through structured, shielded cabling and direct building earthing integration.
- Seamless Local Wireless Capacity: Provided high-density, multi-user guest wireless connectivity across the property via an integrated Ubiquiti UniFi local distribution mesh.