# 5.4.3 Local environment

The percentage of transceivers being indoor and outdoor can be selected thanks to this panel. It will work in combination with the chosen propagation model that you will select. By default the transmitter and receiver are located outdoor. For each elements of the link, it is possible to add [![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/9PThBUQugUtcxFwJ-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/9PThBUQugUtcxFwJ-image.png) or remove [![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/dfVtghpGfZjjf3OO-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/dfVtghpGfZjjf3OO-image.png) a probability of indoor.

[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/oWHViCZ0FRD9g2Rr-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/oWHViCZ0FRD9g2Rr-image.png)**Figure 154: Example of setting up the outdoor/indoor ratio**

You can edit the field by double cliking

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-1lr4ohf" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="444" data-vc="media-single" data-width="450" data-width-type="pixel" id="bkmrk-"><div class="css-kkot1"><div data-alt="" data-collection="contentId-494313" data-context-id="494313" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="187" data-id="28d17097-56d5-416c-b052-e8cef3d96fca" data-node-type="media" data-renderer-start-pos="445" data-type="file" data-width="450"><div class="_2rko18qm _vchhusvi _kqswh2mm _ect4ttxp _p12f1osq _c71l1osq _1bsb1qmm _4t3ine4n _1hlmd0i9 _1rquusvi _eg541i5c _mts3kb7n _1ntskb7n _yfmhtlke _5sb1v00u new-file-experience-wrapper" data-media-vc-wrapper="true" data-testid="media-card-view"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="55.png" data-test-progress="1" data-test-source="remote" data-test-status="complete" data-testid="media-file-card-view"></div></div></div></div></div>[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/ofM0c9iyfqyCp0RQ-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/ofM0c9iyfqyCp0RQ-image.png)**Figure 155: Graphical interface to edit the probability, wall loss and associated standard deviation**

**Table 19: Local environment and wall loss**

<div class="pm-table-container with-shadow-observer" data-layout="align-start" data-testid="table-container" id="bkmrk-description-symbol-t"><div class="pm-table-wrapper" data-autosize="false" data-layout="align-start" data-number-column="false" data-table-local-id="" data-vc="table-node-wrapper"><table data-layout="align-start" data-number-column="false" data-table-width="760" data-testid="renderer-table" style="width: 100%;"><colgroup></colgroup><tbody><tr><td colspan="1" rowspan="1" style="width: 16.5634%;">**Description**

</td><td colspan="1" rowspan="1" style="width: 11.4395%;">**Symbol**

</td><td colspan="1" rowspan="1" style="width: 9.65205%;">**Type**

</td><td colspan="1" rowspan="1" style="width: 6.32292%;">**Unit**

</td><td colspan="1" rowspan="1" style="width: 55.9983%;">**Comments**

</td></tr><tr><td colspan="1" rowspan="1" style="width: 16.5634%;">**Local environment: Receiver**

</td><td colspan="1" rowspan="1" style="width: 11.4395%;">Indoor/

outdoor

</td><td colspan="1" rowspan="1" style="width: 9.65205%;">-

</td><td colspan="1" rowspan="1" style="width: 6.32292%;">-

</td><td colspan="1" rowspan="1" style="width: 55.9983%;">Environment of the receiver antenna: outdoor, indoor

It is used for both <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> and <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">ILR</span></span></span>.

</td></tr><tr><td colspan="1" rowspan="1" style="width: 16.5634%;">**Local environment: Transmitter**

</td><td colspan="1" rowspan="1" style="width: 11.4395%;">Indoor/

outdoor

</td><td colspan="1" rowspan="1" style="width: 9.65205%;">-

</td><td colspan="1" rowspan="1" style="width: 6.32292%;">-

</td><td colspan="1" rowspan="1" style="width: 55.9983%;">Environment of the transmitter antenna: outdoor, indoor

It is used for both <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">VLT</span></span></span> and <span data-highlighted="true" data-vc="highlighted-text"><span class="_kqswh2mm"><span class="_5pioz8co _189e1dm9 _1il9buyh _19lc184f _d0altlke" data-testid="definition-highlighter">ILT</span></span></span>.

</td></tr><tr><td colspan="1" rowspan="1" style="width: 16.5634%;">**Probability**

</td><td colspan="1" rowspan="1" style="width: 11.4395%;">-

</td><td colspan="1" rowspan="1" style="width: 9.65205%;">Scalar

</td><td colspan="1" rowspan="1" style="width: 6.32292%;">%

</td><td colspan="1" rowspan="1" style="width: 55.9983%;">Probability that a Tx or Rx is located indoors or outdoors.

</td></tr><tr><td colspan="1" rowspan="1" style="width: 16.5634%;">**Wall loss**

</td><td colspan="1" rowspan="1" style="width: 11.4395%;">or

</td><td colspan="1" rowspan="1" style="width: 9.65205%;">Scalar

</td><td colspan="1" rowspan="1" style="width: 6.32292%;">dB

</td><td colspan="1" rowspan="1" style="width: 55.9983%;">Attenuation of external walls separating indoor and outdoor propagation environments. This parameter is associated to the selected propagation model.

</td></tr><tr><td colspan="1" rowspan="1" style="width: 16.5634%;">**Std. dev.**

</td><td colspan="1" rowspan="1" style="width: 11.4395%;">or

</td><td colspan="1" rowspan="1" style="width: 9.65205%;">Scalar

</td><td colspan="1" rowspan="1" style="width: 6.32292%;">dB

</td><td colspan="1" rowspan="1" style="width: 55.9983%;">Wall loss stdandard deviation (indoor - outdoor)  
Wall loss standard deviation associated to the selected propagation model.

</td></tr></tbody></table>

<div class="sentinel-right">  
</div></div><div class="pm-table-sticky-scrollbar-container-view-page" data-vc="table-sticky-scrollbar-container"></div></div>Note that when opening a workspace created prior to SEAMCAT version 5, all settings are mapped to the current SEAMCAT version running on your machine. As the parameter local environment didn’t exist before version 5, a warning may appear indicating that “local environments are skipped for multiple interfering links”. This means that SEAMCAT was not able to automatically set the parameters of the local environments (most likely due to a scenario with multiple interferers). Therefore, there is a need to edit the local environment manually.

[![image.png](https://wiki.cept.org/uploads/images/gallery/2026-04/scaled-1680-/wXgShLZvV9pMApsl-image.png)](https://wiki.cept.org/uploads/images/gallery/2026-04/wXgShLZvV9pMApsl-image.png)

<div class="rich-media-item mediaSingleView-content-wrap image-align-start css-m8o4nl" data-layout="align-start" data-media-vc-wrapper="true" data-node-type="mediaSingle" data-renderer-start-pos="1970" data-vc="media-single" data-width="488" data-width-type="pixel" id="bkmrk-figure-156%3A-migratio"><div class="css-phmzj3"><div data-alt="" data-collection="contentId-494313" data-context-id="494313" data-file-mime-type="" data-file-name="file" data-file-size="1" data-height="187" data-id="61970a05-26f2-487f-9ac2-fa1b3e02d8de" data-node-type="media" data-renderer-start-pos="1971" data-type="file" data-width="488"><div class="_2rko18qm _vchhusvi _kqswh2mm _ect4ttxp _p12f1osq _c71l1osq _1bsb1qmm _4t3ine4n _1hlmd0i9 _1rquusvi _eg541i5c _mts3kb7n _1ntskb7n _yfmhtlke _5sb1v00u new-file-experience-wrapper" data-media-vc-wrapper="true" data-testid="media-card-view" id="bkmrk-figure-156%3A-migratio-1"><div class="_1reo15vq _18m915vq _2rko18qm _1e0c1txw _kqswh2mm _p12f1osq _1bsb1osq _4t3i1osq _c71l1osq media-file-card-view" data-cursor="pointer" data-test-media-name="56.png" data-test-progress="1" data-test-source="remote" data-test-status="complete" data-testid="media-file-card-view"><div class="_kqswstnw _1bsb1osq _4t3i1osq _1e0c1txw _2lx21bp4 _1bah1h6o _4cvr1h6o align-center" data-testid="ImageRendererWrapper">![](blob:https://ecowiki.atlassian.net/75f5b356-c4f9-4934-a8bb-460ba4a9a9db#media-blob-url=true&id=61970a05-26f2-487f-9ac2-fa1b3e02d8de&collection=contentId-494313&contextId=494313&width=488&height=187&alt=&clientId=113268fe-fe5b-4bc3-8ff3-07965dbf1d18)F**igure 156: Migration warning on the local environment**</div></div></div></div></div></div>