# 6.5.2 All the channels are blocked

In such a scenario, the detection threshold is taken to a lower value compared to the sRSS and none of the WSDs are transmitting. In SEAMCAT, the Tx power is set to -1000 dBm (Figure 166). The <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">WSD</span></span></span> frequency is the same as the victim frequency per event.

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/VGHd2FJRZGMceEQH-image.png)**Figure 166: all the WSDs are off i.e. -1000 dBm**

Note that in this specific case, the average e.i.r.p. and average WSDs per frequency can not be calculated and therefore can not be displayed as shown in Figure 168.

![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/hVmWgmJnup7fRux2-image.png)**Figure 167: All the WSDs are off i.e. -1000 dBm**