# Lesson 32 — Line of Sight and Wireless Channels

<p class="block-synopsis">The maximum line-of-sight distance, with the four wireless propagation modes as context.</p>

**Objectives covered**

- **3.4** — I can calculate the maximum line-of-sight (LOS) distance between two terrestrial objects.

:::{admonition} Due at this lesson
:class: warning

Quiz 8 (Obj 3.1–3.2)
:::

<div class="block-toc">
  <a class="bt-card bt-reading" href="../Block3Reading/Obj04/ECE215_B3_Obj04_Reading.html">
    <span class="bt-kind">Reading</span>
    <h4>Line of Sight and Wireless Channels</h4>
    <p>The course reading for Objective 3.4.</p>
  </a>
  <a class="bt-card bt-flashcards" href="L32_Flashcards.html">
    <span class="bt-kind">Flashcards</span>
    <h4>Review deck</h4>
    <p>Key terms, equations, and ideas from this lesson, in a self-test deck.</p>
  </a>
  <a class="bt-card bt-slides" href="../_static/slides/ECE_215_Lesson32.pdf">
    <span class="bt-kind">Slides</span>
    <h4>Lesson 32 deck</h4>
    <p>The slides used in class, as a PDF.</p>
  </a>
  <a class="bt-card bt-practice" href="../downloads.html">
    <span class="bt-kind">Practice Problems</span>
    <h4>Work these before the quiz</h4>
    <p>Ungraded problems with answers, on the downloads page.</p>
  </a>
</div>