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</o:shapelayout></xml><![endif]--></head><body bgcolor=white lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#1F497D'>I have a Santec FM-240 VHF transceiver. Also known as a Kentec. I am injecting the audio from the URI into the microphone input. I tried injecting into the PL board input with poor results. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Jeffrey S. Carrier [mailto:jeff.carrier@rmsmsecurity.com] <br><b>Sent:</b> Wednesday, May 09, 2012 7:16 AM<br><b>To:</b> Eric Guth; Ken<br><b>Cc:</b> app_rpt-users@ohnosec.org<br><b>Subject:</b> RE: [App_rpt-users] Noise reduction on receive audio from Allstar<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'>This might be caused by where you’re injecting your audio into the TX radio. Whats the model/make of the TX radio you’re using?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";color:navy'><o:p> </o:p></span></p><div><div class=MsoNormal align=center style='text-align:center'><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><hr size=2 width="100%" align=center></span></div><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> Eric Guth <a href="mailto:[mailto:eric@efratnetworks.com]">[mailto:eric@efratnetworks.com]</a> <br><b>Sent:</b> Tuesday, May 08, 2012 10:13 PM<br><b>To:</b> Ken<br><b>Cc:</b> <a href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a><br><b>Subject:</b> Re: [App_rpt-users] Noise reduction on receive audio from Allstar</span><span style='font-size:12.0pt;font-family:"Times New Roman","serif"'><o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>I am referring to audio coming from the link and transmitted to me on my node. <br><br>73,<o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Eric. 4Z5UG<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div><div><p class=MsoNormal style='margin-bottom:12.0pt'><br>On May 9, 2012, at 3:21 AM, "Ken" <<a href="mailto:ke2n@cs.com">ke2n@cs.com</a>> wrote:<o:p></o:p></p></div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal><span style='color:#1F497D'>Is it possible you are getting discriminator audio from your radio, but telling asterisk that it is “flat” audio?</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>That would make everything high pitched and noisy</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'>Ken</span><o:p></o:p></p><p class=MsoNormal><span style='color:#1F497D'> </span><o:p></o:p></p><div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> <a href="mailto:app_rpt-users-bounces@ohnosec.org">app_rpt-users-bounces@ohnosec.org</a> <a href="mailto:[mailto:app_rpt-users-bounces@ohnosec.org]">[mailto:app_rpt-users-bounces@ohnosec.org]</a> <b>On Behalf Of </b>Eric Guth<br><b>Sent:</b> Tuesday, May 08, 2012 5:34 PM<br><b>To:</b> <a href="mailto:app_rpt-users@ohnosec.org">app_rpt-users@ohnosec.org</a><br><b>Subject:</b> [App_rpt-users] Noise reduction on receive audio from Allstar</span><o:p></o:p></p></div></div><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>Folks, <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>I notice that when hams are noisy into their Allstar node or the repeater connected to the Allstar node, the noise on their signal seems to be higher pitch and accentuated. Some folks are always noisy and therefore difficult to copy. Does anyone else have this problem, and has anyone reduced the noise with either software running on the server or some hardware inserted in between the audio from the URI or CM108 dongle to the transmitter? I was thinking a DSP audio filter (more expensive than my whole node). <o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p><p class=MsoNormal>73, <o:p></o:p></p><p class=MsoNormal>Eric 4Z5UG<o:p></o:p></p><p class=MsoNormal> <o:p></o:p></p></div></div></blockquote></div></body></html>