# 1.2.7 Bandwidth correction factor

When the bandwidth of the interferer and the victim are different, SEAMCAT automatically applies a bandwidth correction factor to calculate the unwanted emission power for a specific bandwidth.

The following example introduces an interferer transmitting 2 W. This is equivalent to 33 dBm (see conversion in Table 97). The amount of energy that a <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">VLR</span></span></span> receives in its bandwidth can be derived according to these two cases illustrated in Figure 1.

[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/2JNrZdw1XBoxdtYK-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/2JNrZdw1XBoxdtYK-image.png)

Further examples of correction bandwidth can be found in section [3.3.8](https://ecowiki.atlassian.net/wiki/spaces/SH/pages/494119/3.3.8+Emission+reference+VLR+bandwidth+relationship+and+bandwidth+correction+factor#id-3.3.8Emission,reference,VLRbandwidthrelationshipandbandwidthcorrectionfactor-3.3.8 "https://ecowiki.atlassian.net/wiki/spaces/SH/pages/494119/3.3.8+Emission+reference+VLR+bandwidth+relationship+and+bandwidth+correction+factor#id-3.3.8Emission,reference,VLRbandwidthrelationshipandbandwidthcorrectionfactor-3.3.8").