Wireless Link Calculator – LinkZoneTools

Wireless Link Calculator

Quick Check

Will My Wireless Link Work?

Select your radio and antenna, enter the distance, and get a plain-English answer in seconds. No RF engineering knowledge required.

RF engineer? Use the Link Budget Calculator for full step-by-step analysis →

Select Your Radio

Choose a manufacturer and model, or enter specs manually

Selected: — · Tx: — dBm · Rx: — dBm · Freq: — GHz · Max throughput: —

✏ Enter specs manually instead

Tx Power (dBm)

Rx Sensitivity (dBm)

Frequency (GHz)

Max Throughput (optional)

Select Antenna Type

Same antenna used at both ends (symmetric link assumed)

Or enter gain directly: dBi

How Far Apart Are the Sites?

Straight-line distance between the two antenna locations

10 km

Any Additional Losses? (optional)

Cable runs, rain fading, vegetation — leave at 0 if unsure

Cable Loss — Each End (dB)

Rain / Vegetation / Other (dB)

Required Fade Margin (dB)

🌧 Rain & Atmospheric Loss Required for 60/80 GHz

At 60 GHz and 80 GHz, rain attenuation and oxygen absorption are major link-limiting factors and must be included for any honest link estimate. Select your ITU rain zone to include these losses. Use the ITU Rain Zone Lookup tool to find your zone from GPS coordinates.

ITU Rain Zone

For a complete and accurate 60/80 GHz link budget, use the Link Budget Calculator which applies the full ITU-R P.838-3 and P.676 methodology.

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Link Viable

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What This Means — In Plain English

Received Signal Level

—dBm

—

Fade Margin

—dB

—

Free Space Path Loss

—dB

—

System Gain

—dB

—

Recommendations

→ Next Steps for Final Design

→ Use the Fresnel Zone Calculator to check terrain clearance and antenna height requirements

→ Use the ITU Rain Zone Lookup to find the rainfall rate for your location and add rain attenuation to this calculation

→ Use the Path Profile Tool to visualize the terrain and verify line of sight

→ Use the Link Budget Calculator for a full step-by-step engineering analysis with all losses itemized

→ Always verify transmit power and sensitivity specs against the current manufacturer datasheet before final design

⚠ Important — Please Read Before Using This Tool

LinkZoneTools LLC · Wireless Link Calculator · Terms of Use & Disclaimer

📋 Reference & Educational Use Only

This tool is provided for reference, planning, and educational purposes only. It is not intended to constitute, and shall not be construed as, professional RF engineering advice or a guarantee of wireless link performance. Results are estimates based on theoretical models and published data.

⚠ Tool-Specific Notice — Wireless Link Calculator

This tool provides a simplified go/no-go feasibility estimate for non-technical planning purposes only. It uses theoretical free-space path loss and does not account for terrain, vegetation, atmospheric effects, interference, rain fading, or antenna misalignment. A green "Link Will Work" result does NOT guarantee successful link deployment. This tool is NOT a substitute for a full RF link budget analysis, physical site survey, and review by a qualified RF engineer before equipment procurement or installation.

🌐 Third-Party Data & APIs

Some LinkZoneTools tools use third-party data sources including OpenStreetMap geocoding, Open-Meteo elevation API, OpenTopoData, and ASTER GDEM terrain data. LinkZoneTools LLC does not control these sources and makes no warranty as to their accuracy, availability, or currency.

⚖ Limitation of Liability — No Warranty

LINKZONETOOLS LLC PROVIDES THIS TOOL "AS IS" WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED. LINKZONETOOLS LLC SHALL NOT BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, CONSEQUENTIAL, OR EXEMPLARY DAMAGES ARISING FROM USE OF OR RELIANCE ON THIS TOOL, INCLUDING FAILED WIRELESS LINK DEPLOYMENTS, EQUIPMENT LOSSES, LOST REVENUE, OR BUSINESS INTERRUPTION. THE USER ASSUMES ALL RESPONSIBILITY FOR FINAL DESIGN DECISIONS AND THEIR OUTCOMES.

👤 User Responsibility

By using this tool, you acknowledge that: (1) you will independently verify all outputs against current authoritative sources; (2) you will use manufacturer link planning software as the final design authority; (3) you will conduct a physical site survey before specifying equipment or antenna heights; and (4) LinkZoneTools LLC bears no responsibility for any errors, omissions, or outcomes resulting from use of this tool.

I have read and understood the above disclaimer. I agree that this tool is for reference and educational purposes only, and I will independently verify all outputs before any final design, procurement, or installation decisions.

📚 How the Wireless Link Quick Check Works

What does this tool do?

This is a fast “will it work?” calculator for point-to-point wireless links. Enter your radio, antenna, distance and frequency — and the tool tells you whether your link will close and how much safety margin you have.

Verdict explained

Green — Link viable: Your fade margin meets the target. The link should work reliably.
Yellow — Marginal: Works but limited safety margin. Rain or minor misalignment could cause outages.
Red — Link will fail: Signal below threshold. Need bigger antenna, shorter distance, or better radio.

💡 This is a free-space estimate only. Does not include terrain obstructions or precise rain fading. Use the full Link Budget Calculator for final design documentation.