<div dir="ltr"><div><div>Any analog telephony streaming music on hold from the internet? So just appears it's coming over the air, but actually EMI bleeding from their MOH server?<br><br></div>Kind regards<br><br></div>Paul Wilkins<br></div><div class="gmail_extra"><br><div class="gmail_quote">On 20 March 2017 at 17:40, Damien Gardner Jnr <span dir="ltr"><<a href="mailto:rendrag@rendrag.net" target="_blank">rendrag@rendrag.net</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Few questions..<div><br></div><div>How 'local' is the radio station? Within a km? or just within 50km? AM or FM station?</div><div><br></div><div>Do they hear the radio station if they touch the probe to themselves?</div><div><br></div><div>Does the customer have a PABX with that radio station fed into it from a connected radio?</div><div><br></div><div>If no fed PABX, and the station is FM that is VERY unusual. AM, I could understand, if there's a IF being generated by some equipment which is modulating at almost exactly the station's frequency.</div><div><br></div><div>I'd be finding the building's MEN bond, and testing there, then working your way back out to the individual equipment, and see where it's introduced. That said, I'd probably just call a qualified electrician, as they're more likely to spot the issue, and you'll likely need to take the front off the switchboard to get at the bond point.</div></div><div class="gmail_extra"><div><div class="h5"><br><div class="gmail_quote">On 20 March 2017 at 17:24, Peter Tiggerdine <span dir="ltr"><<a href="mailto:ptiggerdine@gmail.com" target="_blank">ptiggerdine@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">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>
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<p>Damien Gardner Jnr<br>VK2TDG. Dip EE. GradIEAust<br><a href="mailto:rendrag@rendrag.net" target="_blank">rendrag@rendrag.net</a> - <span><a href="http://www.rendrag.net/" target="_blank">http://www.rendrag.net/</a><u><br></u></span>--<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</p></div></div>
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