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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal>An (expert) friend replies:<o:p></o:p></p><p class=MsoNormal style='margin-left:.5in'><i>“Pulse means radar or one of the pulse modulations: width, position, or amplitude.<o:p></o:p></i></p><p class=MsoNormal style='margin-left:.5in'><i><o:p> </o:p></i></p><p class=MsoNormal style='margin-left:.5in'><i>802.11n modulations are not pulse modulation.<o:p></o:p></i></p><p class=MsoNormal style='margin-left:.5in'><i><o:p> </o:p></i></p><p class=MsoNormal style='margin-left:.5in'><i>The 802.11n OFDM and OFDM DSSS modulations have an emission code of M if I am reading the table correctly. <a href="https://www.hfunderground.com/wiki/index.php/Emission_Designator">https://www.hfunderground.com/wiki/index.php/Emission_Designator</a>. Part 97.305(8) does not list M as an allowed type of data emission on the 3 cm band.<o:p></o:p></i></p><p class=MsoNormal style='margin-left:.5in'><i><o:p> </o:p></i></p><p class=MsoNormal style='margin-left:.5in'><i>But the Part 97.305 table does list SS as allowed so I think the OFDM DSSS variation of 802.11n would be okay, within tge constraints of 97.311.<o:p></o:p></i></p><p class=MsoNormal style='margin-left:.5in'><i><o:p> </o:p></i></p><p class=MsoNormal style='margin-left:.5in'><i>That's my read on it. The AREDN or HamWAN guys would know more.</i><i>” - noax<o:p></o:p></i></p><p class=MsoNormal><o:p> </o:p></p><ul style='margin-top:0in' type=disc><li class=MsoListParagraph style='margin-left:0in;mso-list:l0 level1 lfo1'>John/KE7KDQ<o:p></o:p></li></ul><p class=MsoListParagraph><o:p> </o:p></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b>From:</b> PSDR <psdr-bounces@hamwan.org> <b>On Behalf Of </b>Jonathan Dorminy<br><b>Sent:</b> Friday, December 9, 2022 9:25 AM<br><b>To:</b> psdr@hamwan.org<br><b>Subject:</b> [HamWAN PSDR] FCC Rules<o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>I am trying to experiment with making a link on the 10 GHz band, the problem is that I think I am trying to do something prohibited by Part 97. On the 2.4 and 5 GHz bands, pulse emissions are allowed, however, they are prohibited on the 10 GHz band, the band I want to use. My question is, is the OFDM modulation used in 802.11n considered pulse, or spread spectrum by the FCC?<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I have done extensive searching online and I have found conflicting answers. If you can answer this question, I would greatly appreciate it.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><p class=MsoNormal>73, Jonny Dorminy/KN4LGM<o:p></o:p></p></div></div></body></html>