Examples
Examples
Try the starting example
- Frequency (MHz)
- 2400
- Total path length (m)
- 1000
- Obstacle distance from transmitter (m)
- 400
- Measured ray-to-obstacle clearance (m)
- 3
- Required radius fraction
- 0.6
- First Fresnel radius at obstacle (m)
- 5.475331
- Required clearance (m)
- 3.285198
- Clearance surplus (m)
- -0.285198
Try another scenario
- Frequency (MHz)
- 2640
- Total path length (m)
- 1000
- Obstacle distance from transmitter (m)
- 400
- Measured ray-to-obstacle clearance (m)
- 3
- Required radius fraction
- 0.6
- First Fresnel radius at obstacle (m)
- 5.220523
- Required clearance (m)
- 3.132314
- Clearance surplus (m)
- -0.132314
Calculation method
Calculation method
First Fresnel radius at obstacle (m)
sqrt(wavelength d1 d2/(d1+d2)).
Required clearance (m)
Radius × supplied required fraction.
Clearance surplus (m)
Measured clearance minus required clearance.
Symbols and units
- a
- Frequency (MHz)
- b
- Total path length (m)
- c
- Obstacle distance from transmitter (m)
- d
- Measured ray-to-obstacle clearance (m)
- e
- Required radius fraction
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Frequency, path length, obstacle position. Returns Fresnel radius and supplied clearance comparison. All coefficients and observations are user supplied; results describe only the stated mathematical model. Quantities are deterministic calculations from supplied observations and assumptions; no external data is fetched. Supported limits: Finite inputs only; numeric fields bounded as labelled. Lists and JSON records are limited to 256 entries unless a stricter tool bound is stated. No automatic design approval, legal conclusion, treatment recommendation or safety certification. Frequency (MHz): minimum 1e-12, maximum 1000000000000.0. Total path length (m): minimum 1e-12, maximum 1000000000000.0. Obstacle distance from transmitter (m): minimum 1e-12, maximum 1000000000000.0. Measured ray-to-obstacle clearance (m): minimum None, maximum 1000000000000.0. Required radius fraction: minimum 0, maximum 1.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.
Further reading
Background reading; this does not imply endorsement or independent review of SumFizz.