https://fweb.wallawalla.edu/class-wiki/index.php?action=history&feed=atom&title=Josh_DSB 2026-04-06T16:32:31Z Revision history for this page on the wiki MediaWiki 1.43.0 https://fweb.wallawalla.edu/class-wiki/index.php?title=Josh_DSB&diff=9592&oldid=prev 2010-06-07T06:45:13Z

<p><span class="autocomment">Double Side Band</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 23:45, 6 June 2010</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l9">Line 9:</td> <td colspan="2" class="diff-lineno">Line 9:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It makes sense to use this signal to teach how to build a radio because its receiver and transmitter are very simple.  All you need is an antenna, a mixer with a cosine wave, a low pass filter matched to the width of the band, and a base band processor (like a sound card).  Transmitting the wave would just be the signal mixed with a cosine wave at the desired fc and an antenna.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>It makes sense to use this signal to teach how to build a radio because its receiver and transmitter are very simple.  All you need is an antenna, a mixer with a cosine wave, a low pass filter matched to the width of the band, and a base band processor (like a sound card).  Transmitting the wave would just be the signal mixed with a cosine wave at the desired fc and an antenna.</div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[File:Dsb.png]]</ins></div></td></tr> </table>

Joshua.sarris https://fweb.wallawalla.edu/class-wiki/index.php?title=Josh_DSB&diff=9589&oldid=prev 2010-06-07T05:57:28Z

<p>Created page with &#039;== Double Side Band == Double side band is probably the most familiar to students in Dr. Frohne&#039;s Electronics class. This is the type of modulation that the radio was designed…&#039;</p> <p><b>New page</b></p><div>== Double Side Band ==<br /> <br /> <br /> Double side band is probably the most familiar to students in Dr. Frohne&#039;s Electronics class. This is the type of modulation that the radio was designed for and how signals was taught as well.<br /> <br /> The signal looks like &lt;math&gt;v(t) = m(t)cos(2 pi ft)&lt;/math&gt; or &lt;math&gt; V(f) = 1/2 M(f-fc) + 1/2M(f + fc) &lt;/math&gt;<br /> <br /> [[File:Cropped.png]]<br /> <br /> It makes sense to use this signal to teach how to build a radio because its receiver and transmitter are very simple. All you need is an antenna, a mixer with a cosine wave, a low pass filter matched to the width of the band, and a base band processor (like a sound card). Transmitting the wave would just be the signal mixed with a cosine wave at the desired fc and an antenna.</div>

Joshua.sarris