http://wiki.hamtools.org/index.php?action=history&feed=atom&title=Duplexer 2026-05-02T02:27:08Z Revision history for this page on the wiki MediaWiki 1.38.1 http://wiki.hamtools.org/index.php?title=Duplexer&diff=5469&oldid=prev 2018-01-07T00:09:47Z

<p>added image of a duplexer</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 17:09, 6 January 2018</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td> <td colspan="2" class="diff-lineno">Line 1:</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;">[[Image:http://www.mfjenterprises.com/Downloads/MFJ-916B/MFJ-916B_THUMB.jpg|thumb|A Typical HF-VHF/UHF Duplexer]]</ins></div></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>Copied from [http://en.wikipedia.org/wiki/Duplexer Wikipedia] and modified to suit this site.</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>Copied from [http://en.wikipedia.org/wiki/Duplexer Wikipedia] and modified to suit this site.</div></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> </table>

W8AWT http://wiki.hamtools.org/index.php?title=Duplexer&diff=4870&oldid=prev 2011-04-10T08:36:06Z

<p>added info and links</p> <p><b>New page</b></p><div>Copied from [http://en.wikipedia.org/wiki/Duplexer Wikipedia] and modified to suit this site.<br /> <br /> A &#039;&#039;&#039;duplexer&#039;&#039;&#039; is a device that allows bi-directional communication over a single channel, and in ham radio is typically used in repeaters<br /> <br /> In radar and radio communications systems, it isolates the receiver from the transmitter while permitting them to share a common antenna. Most radio repeater systems include a duplexer.<br /> <br /> Note 1: A duplexer must be designed for operation in the frequency or radio band used by the receiver and transmitter, and must be capable of handling the output power of the transmitter. <br /> <br /> Note 2: A duplexer must provide adequate rejection of transmitter noise occurring at the receive frequency, and must be designed to operate at, or less than, the frequency separation between the transmitter and receiver. <br /> <br /> Further information about duplexer design can be found here:<br /> <br /> * [http://www.repeater-builder.com/rbtip/2mduplexer.html 2m duplexer construction guide]<br /> * [http://www.repeater-builder.com/rbtip/2mduplexer.html Commercial duplexer specifications]<br /> * [http://www.seits.org/duplexer/duplexer.htm Duplexer theory and tune-up]<br /> * [http://www.mhspot.com/radio/duplexer_tuning.htm How to tune a repeater duplexer]<br /> <br /> {{apparatus}}</div>

TimVK4YEH