diff --git a/es.telecomlobby.com/radio_aficion/URE_3.html b/es.telecomlobby.com/radio_aficion/URE_3.html
new file mode 100644
index 00000000..0ba5fe34
--- /dev/null
+++ b/es.telecomlobby.com/radio_aficion/URE_3.html
@@ -0,0 +1,598 @@
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+</style><title>URE_3</title>
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+<body class='typora-export'><div class='typora-export-content'>
+<div id='write'  class=''><h1 id='componentes-activos-semiconductores-y-válvulas'><span>Componentes activos: semiconductores y válvulas</span></h1><h4 id='31-esquemas-y-símbolos-en-electrónica'><span>3.1 Esquemas y símbolos en electrónica.</span></h4><p><img src="https://github.com/redeltaglio/RNMnetwork/raw/master/Images/simbolos.jpg" referrerpolicy="no-referrer"></p><h2 id='bibliografía'><span>Bibliografía</span></h2><ul><li><span>Libro de examen de radioaficionado, Luis Alarcón Palencia </span><code>EA4DXP</code></li></ul></div></div>
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diff --git a/es.telecomlobby.com/radio_aficion/URE_3.md b/es.telecomlobby.com/radio_aficion/URE_3.md
index afd168e8..2ceebe71 100644
--- a/es.telecomlobby.com/radio_aficion/URE_3.md
+++ b/es.telecomlobby.com/radio_aficion/URE_3.md
@@ -2,6 +2,8 @@
 
 #### 3.1 Esquemas y símbolos en electrónica.
 
+![](https://github.com/redeltaglio/RNMnetwork/raw/master/Images/simbolos.jpg)
+
 ## Bibliografía
 
 - Libro de examen de radioaficionado, Luis Alarcón Palencia `EA4DXP`
\ No newline at end of file
