<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Geneva;
panose-1:0 0 0 0 0 0 0 0 0 0;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman",serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.gmailmsg
{mso-style-name:gmail_msg;}
span.m2516449513263501422im
{mso-style-name:m_2516449513263501422im;}
span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-AU link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>6PR is only a baby transmitter – 720AM (ex 6WF) in Hamersley can heard by touching the 3.5mm input to a powered speaker or an fset wand from 10kms away.. <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>The building has to be close to the antenna, which from memory was in the water off Ascot… maybe?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> AusNOG [mailto:ausnog-bounces@lists.ausnog.net] <b>On Behalf Of </b>James Harmey<br><b>Sent:</b> Monday, 20 March 2017 4:44 PM<br><b>To:</b> Chris Hurley <chris@minopher.net.au>; Paul Wilkins <paulwilkins369@gmail.com>; ausnog@lists.ausnog.net<br><b>Subject:</b> Re: [AusNOG] Earthing problems and switching infrastructure.<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal>What's the proximity to the 6PR transmitter? I've heard AM radio off a chain link fence under the right conditions. That stuff gets into everything.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>If it's only happening on a single floor there is something ungrounded there. Hard to track down though, best to get in a professional.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>On Mon, 20 Mar 2017 at 7:14 pm, Chris Hurley <<a href="mailto:chris@minopher.net.au">chris@minopher.net.au</a>> wrote:<o:p></o:p></p></div><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><div><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>I would get it tracked down by suitable people, it’s one of those things 90% of time not a biggie but you don’t want that 3am call out and then trying to find a floating earth or an earth leakage fault. And it will be in the middle of a down pour increasing the problem.<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'> <o:p></o:p></span></p></div><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>Regards,<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>Chris Hurley BE (Elec)<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>Signal Manager<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>******************************************************<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>Dragon Rail Pty Ltd Phone: 1300 730 531 <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>74 Allanfield Crescent <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>Boronia, 3155 Victoria <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>Australia <o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>******************************************************<o:p></o:p></span></p></div></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div></div></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><span class=gmailmsg><b><span style='font-size:10.0pt;font-family:"Geneva",serif;color:black'>From: </span></b></span><span style='font-size:10.0pt;font-family:"Geneva",serif;color:black'>AusNOG <<a href="mailto:ausnog-bounces@lists.ausnog.net" target="_blank">ausnog-bounces@lists.ausnog.net</a>> on behalf of Paul Wilkins <<a href="mailto:paulwilkins369@gmail.com" target="_blank">paulwilkins369@gmail.com</a>><br><span class=gmailmsg><b>Date: </b></span>Monday, 20 March 2017 at 6:55 PM<br><span class=gmailmsg><b>To: </b></span>"<a href="mailto:ausnog@lists.ausnog.net" target="_blank">ausnog@lists.ausnog.net</a>" <<a href="mailto:ausnog@lists.ausnog.net" target="_blank">ausnog@lists.ausnog.net</a>><br><span class=gmailmsg><b>Subject: </b></span>Re: [AusNOG] Earthing problems and switching infrastructure.<o:p></o:p></span></p></div></div><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><div><div><div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>Doubtful. You're not going to be inducing 0.5V. I'd be more worried that the ground is floating, which definitely can cause signal and equipment problems.<o:p></o:p></span></p></div><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>Kind regards<o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>Paul Wilkins<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>On 20 March 2017 at 18:36, Peter Tiggerdine <span class=gmailmsg><<a href="mailto:ptiggerdine@gmail.com" target="_blank">ptiggerdine@gmail.com</a>></span> wrote:<o:p></o:p></span></p><blockquote style='border:none;border-left:solid #CCCCCC 1.0pt;padding:0cm 0cm 0cm 6.0pt;margin-left:4.8pt;margin-right:0cm'><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>the radio station is 6PR so it's AM.<br><br>There's no onsite PABX or music being fed into it.<br><br>It's happens on one floor of a multi storey building.<br><br>Is the consensus that this type of interference can cause network<br>performance problems?<br><span class=m2516449513263501422im>Regards,</span><br><br><span class=m2516449513263501422im>Peter Tiggerdine</span><br><br><span class=m2516449513263501422im>GPG Fingerprint: 2A3F EA19 F6C2 93C1 411D 5AB2 D5A8 E8A8 0E74 6127</span><br><br><o:p></o:p></span></p><div><div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>On Mon, Mar 20, 2017 at 5:07 PM, Paul Wilkins <<a href="mailto:paulwilkins369@gmail.com" target="_blank">paulwilkins369@gmail.com</a>> wrote:<br>> Any analog telephony streaming music on hold from the internet? So just<br>> appears it's coming over the air, but actually EMI bleeding from their MOH<br>> server?<br>><br>> Kind regards<br>><br>> Paul Wilkins<br>><br>> On 20 March 2017 at 17:40, Damien Gardner Jnr <<a href="mailto:rendrag@rendrag.net" target="_blank">rendrag@rendrag.net</a>> wrote:<br>>><br>>> Few questions..<br>>><br>>> How 'local' is the radio station? Within a km? or just within 50km? AM<br>>> or FM station?<br>>><br>>> Do they hear the radio station if they touch the probe to themselves?<br>>><br>>> Does the customer have a PABX with that radio station fed into it from a<br>>> connected radio?<br>>><br>>> If no fed PABX, and the station is FM that is VERY unusual. AM, I could<br>>> understand, if there's a IF being generated by some equipment which is<br>>> modulating at almost exactly the station's frequency.<br>>><br>>> I'd be finding the building's MEN bond, and testing there, then working<br>>> your way back out to the individual equipment, and see where it's<br>>> introduced. That said, I'd probably just call a qualified electrician, as<br>>> they're more likely to spot the issue, and you'll likely need to take the<br>>> front off the switchboard to get at the bond point.<br>>><br>>> On 20 March 2017 at 17:24, Peter Tiggerdine <<a href="mailto:ptiggerdine@gmail.com" target="_blank">ptiggerdine@gmail.com</a>> wrote:<br>>>><br>>>> Hi All,<br>>>><br>>>> I've got a customer that can touch any steel object that's connected<br>>>> to earth and listen to the local radio station with a tone generator<br>>>> wand. I've chalked this up an earthing problem touching a copper rod<br>>>> or possibly building antenna.<br>>>><br>>>> The question is weather this is likely to impact switches and possibly<br>>>> network performance. I'm airing on the side of very unlikely but it's<br>>>> all frequency so unsure.<br>>>><br>>>> Happy for off list or on list replies.<br>>>><br>>>> Regards,<br>>>><br>>>> Peter Tiggerdine<br>>>><br>>>> GPG Fingerprint: 2A3F EA19 F6C2 93C1 411D 5AB2 D5A8 E8A8 0E74 6127<br>>>> _______________________________________________<br>>>> AusNOG mailing list<br>>>> <a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a><br>>>> <a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a><br>>><br>>><br>>><br>>><br>>> --<br>>><br>>> Damien Gardner Jnr<br>>> VK2TDG. Dip EE. GradIEAust<br>>> <a href="mailto:rendrag@rendrag.net" target="_blank">rendrag@rendrag.net</a> - <a href="http://www.rendrag.net/" target="_blank">http://www.rendrag.net/</a><br>>> --<br>>> We rode on the winds of the rising storm,<br>>> We ran to the sounds of thunder.<br>>> We danced among the lightning bolts,<br>>> and tore the world asunder<br>>><br>>><br>>> _______________________________________________<br>>> AusNOG mailing list<br>>> <a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a><br>>> <a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a><br>>><br>><br>><br>> _______________________________________________<br>> AusNOG mailing list<br>> <a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a><br>> <a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a><br>><o:p></o:p></span></p></div></div></blockquote></div><p class=MsoNormal><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'><o:p> </o:p></span></p></div><p class=MsoNormal><span class=gmailmsg><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'>_______________________________________________ AusNOG mailing list <a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a> <a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a> </span></span><span style='font-size:10.5pt;font-family:"Calibri",sans-serif;color:black'><o:p></o:p></span></p></div><p class=MsoNormal>_______________________________________________<br>AusNOG mailing list<br><a href="mailto:AusNOG@lists.ausnog.net" target="_blank">AusNOG@lists.ausnog.net</a><br><a href="http://lists.ausnog.net/mailman/listinfo/ausnog" target="_blank">http://lists.ausnog.net/mailman/listinfo/ausnog</a><o:p></o:p></p></blockquote></div></div></div></body></html>