SectorLine

SectorLine is a smart and precise azimuth and antenna alignment tool built for field engineers and telecommunication technicians.
Created by an antenna installation expert, it includes every function you need in the field — from accurate directional visualization to advanced delta calculations — all in one intuitive app.

Whether you’re aligning LTE (4G), 5G, microwave, or other sector antennas, SectorLine ensures unmatched precision. It supports both Grid North (UTM zones) and True North, providing automatic azimuth correction, grid convergence, and direction computation for global accuracy.

⚙️ Key Features

• Grid North & True North Compatible
SectorLine automatically adjusts azimuths based on your coordinates and UTM grid convergence. Instantly switch between Grid North (UTM zones 1–60) and True North — the app recalculates everything with double-precision accuracy.

• Delta Angle Calculation – Exclusive Feature
Use the Delta function to find the angle difference between your target azimuth and a visible reference point. Perfect for cases with no direct landmark or poor visibility.
SectorLine computes the delta (°) between the true azimuth and your alternative direction, letting you align antennas precisely using a digital protractor or CellAligner.
This feature is unique — no other antenna alignment app currently offers Delta calculation.

• Smart Map Interface
Integrated with Google Maps, SectorLine visualizes up to six independent sectors, each with its own color and azimuth. Long-press to set your anchor point, edit sectors, and instantly see both main and delta lines on the map.

• Intuitive Design for Field Work
Built for real engineers, not for labs. The UI is simple, clear, and optimized for one-hand outdoor use. You don’t need GIS skills — SectorLine handles the math.

• KML Export (Google Earth)
Export your project — azimuths, deltas, and coordinate data — to a KML file for use in Google Earth or other GIS tools. Each file includes site coordinates, system type, azimuths, delta values, and colors.

• JSON/CSV Export & Import
Easily save or load your configurations. Share or move data between devices without losing precision.

• Works with External Tools
Compatible with CellAligner and all digital protractors. Enter the delta value calculated by SectorLine to align antennas accurately, even when using offset landmarks.

• Multi-Sector Support
Add and manage up to six sectors. Long-press to add or remove, short-tap to activate or edit. Each sector is color-coded for clarity.

• Multi-Language Interface
Supports English, Norwegian, Swedish, Polish, Serbian, and Lithuanian. The app remembers your preferences for fast field work.

🧭 Technical Precision

SectorLine applies a scientifically proven grid-convergence formula from the Transverse Mercator projection. It calculates the angular difference (γ) between Grid North and True North using latitude and longitude. All computations use double precision for sub-degree accuracy that matches professional geodetic standards.

🚀 Designed by Professionals, for Professionals

SectorLine was not made by a generic software company — it was built by an antenna installation specialist who knows real field conditions: fog, terrain, and time pressure. Every detail — from azimuth correction to delta handling — is tailored to real-world use.

SectorLine merges field-tested simplicity with engineering precision, giving you confidence that every antenna is aligned exactly as planned.

✅ Summary

Smart and precise antenna alignment app

Works with Grid North and True North (UTM compatible)

Unique Delta feature for offset reference aiming

KML, JSON, and CSV export

Compatible with CellAligner and digital protractors

Designed by an experienced field engineer

Simple, reliable, and ready for real-world installations