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**Propagation constant (β) calculator** - step by step calculation, formula & solved example problem to find the change of wave amplitude at a certain distance in the transmission line or medium. Wavelength λ in Hz is the key term of this calculation. Propagation constant also known as transmission parameter, propagation coefficient, transmission function or propagation parameter.

The below mathematical formula is used in this calculator to find the change of wave amplitude at a certain distance X of the transmission line or medium.

The below step by step solved example problem may helpful for users to understand how the input values are being used in such calculations to find the propagation constant (β) of the transmission medium.

**Example Problem**

Find the transmission or propagation parameter of the transmission line or wave guide whose wavelenggh λ = 15 x 10^{3}.

**Solution**

The given data

wavelenggh λ = 15 x 10^{3}

__Step by step calculation__

Formula to find β = 2π/λ

substitute the values in the above formula

= 2π/15 x 10^{3}

**β = 0.0041**

In the field of *electrical engineering*, it's important to calculate the change of wave amplitude at a certain distance X in the transmission to analyse the transmission medium characteristics. The above formula, step by step calculation & solved example problem may be useful for users to understand how the values are being used in the formula to propagation constant β, however, when it comes to online for quick calculations, this calculator helps the user to perform & verify such calculations as quick as possible.