Wi-Fi & Wireless Link Designer (Heatmap, PtP, PtMP)

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This free Wi-Fi and wireless link designer helps you plan wireless networks before you buy any equipment. In Indoor Wi-Fi mode you load your floor plan, set the scale, draw walls from common building materials and place access points. The tool then predicts signal strength, SNR, data rate, channel overlap and roaming coverage across the floor, shows where the design falls short of your target, and builds the access point schedule and BOQ with PoE and Cat6 estimates.

For outdoor links, PtP mode works out the full link budget between two sites on a satellite map. That covers distance, azimuth, antenna tilt, free-space loss, received signal, fade margin, expected modulation and throughput, plus the first Fresnel zone, Earth bulge, a real terrain profile and an availability estimate that includes rain fade at higher frequencies. PtMP mode does the same for a base station with sectors and many customer radios (CPEs), colouring each one by link quality and summarising the shared sector capacity.

The tool is for network, ELV and ICT engineers, installers and consultants who need a quick, clear design for proposals and site planning. Results use simplified models and typical values, so always confirm them with a site survey and the manufacturer’s datasheets.

Wi-Fi & Wireless Link Designer v1.0

Predict indoor Wi-Fi coverage on your floor plan with walls and access points, then plan outdoor point-to-point and point-to-multipoint links on a satellite map with link budget, Fresnel zone, terrain profile, availability and BOQ.

Set drawing scale
Real length between the two points:
Blank grid
Size of the area to plan (metres):

Heatmap view

Requirement & coverage

Propagation model

RSSI = Tx + antenna gain − (FSPL at 1 m + 10·n·log₁₀ d) − walls crossed. d is the 3D distance from AP to client height.

Wall material (typical loss dB @ 2.4 / 5 / 6 GHz)

Capacity helper

Access points (0)

Export
Exported design
How to use
  1. Indoor Wi-Fi: load your floor plan (PNG, JPG or the first pages of a PDF) or start a blank grid, then set the scale by clicking both ends of a known dimension.
  2. Draw walls with the material that matches the building (click each corner, double-click or Esc to finish). Optionally draw coverage areas so the percentage is worked out only where Wi-Fi is needed.
  3. Place access points, choose the model, band, channel, width, power and mounting height, and drag them to move. Switch the heatmap between signal, SNR, data rate, co-channel overlap, APs heard and AP zones.
  4. Pick a design target (−67 dBm for voice and video). Use Auto-place APs to add APs at the weakest points until the target area percentage is met, then Auto channels to spread channels. Place the switch / IDF to estimate Cat6 lengths in the BOQ.
  5. PtP link: search for the area, place Site A and Site B (or type coordinates), set antenna heights and the radio preset, then press Terrain profile. Check the fade margin, Fresnel clearance and availability, and add trees or buildings as clutter or manual obstacles.
  6. PtMP: place the base station, set each sector's azimuth, beamwidth, gain and tilt, then add CPEs by clicking the map. Each CPE is coloured by link quality; run the terrain check on CPEs that matter.
  7. Save the project as JSON, export PNG, copy the tables as CSV, or print the report with BOQ.
Predictions use simplified models and typical values. Always confirm with a site survey and the manufacturer's datasheets. Wall losses, presets, sensitivities and throughput are typical estimates; check local regulations for frequency, power and EIRP limits. Your design autosaves in this browser. Tool by Techubox.com.
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