diff --git a/es.telecomlobby.com/radio_aficion/URE_4.html b/es.telecomlobby.com/radio_aficion/URE_4.html
new file mode 100644
index 00000000..d1657e1c
--- /dev/null
+++ b/es.telecomlobby.com/radio_aficion/URE_4.html
@@ -0,0 +1,598 @@
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+</style><title>URE_4</title>
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+<body class='typora-export'><div class='typora-export-content'>
+<div id='write'  class=''><h1 id='elementos-de-radioelectricidad'><span>Elementos de radioelectricidad</span></h1><p><img src="http://www.astrosurf.com/luxorion/Radio/rtx-yaesu-ft-1000mp-mark-v.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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+# Elementos de radioelectricidad
+
+![](http://www.astrosurf.com/luxorion/Radio/rtx-yaesu-ft-1000mp-mark-v.jpg)
+
+## Bibliografía
+
+- Libro de examen de radioaficionado, Luis Alarcón Palencia `EA4DXP`
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