http://wiki.hamtools.org/index.php?action=history&feed=atom&title=Emission_Classification 2026-05-02T04:05:39Z Revision history for this page on the wiki MediaWiki 1.38.1 http://wiki.hamtools.org/index.php?title=Emission_Classification&diff=3539&oldid=prev 2009-06-30T05:57:01Z

<p>added info and examples</p> <a href="http://wiki.hamtools.org/index.php?title=Emission_Classification&amp;diff=3539&amp;oldid=3538">Show changes</a>

TimVK4YEH http://wiki.hamtools.org/index.php?title=Emission_Classification&diff=3538&oldid=prev 2009-06-30T05:10:47Z

<p>started page</p> <p><b>New page</b></p><div>What are they?==<br /> <br /> Emissions or radio frequency transmissions are classified according to a number of criteria; <br /> * Bandwidth<br /> * Modulation of the main carrier<br /> * The nature of the signals modulating the main carrier<br /> * The type of information being transmitted<br /> * Details of signals<br /> * Nature of multiplexing<br /> <br /> These criteria have been agreed to internationally to provide consistency.<br /> <br /> == How are they written?==<br /> Emission codes are usually written in the form XXXX 12345, where;<br /> * XXXX is used to describe the bandwidth. For example 750H means 750 Hz, and 2K50 means 2.5KHz<br /> * 12345 is used to describe the other 5 characteristics listed above. Note that characteristics 4 and 5 are optional and are frequently missing from emission codes.<br /> <br /> ===Carrier modulation===<br /> <br /> [[Modes}}</div>

TimVK4YEH