<html xmlns="http://www.w3.org/1999/xhtml" xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office"><head><!--[if gte mso 9]><xml><o:OfficeDocumentSettings><o:AllowPNG/><o:PixelsPerInch>96</o:PixelsPerInch></o:OfficeDocumentSettings></xml><![endif]--></head><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1491245589792_5084"><font size="6"><b>History:</b></font></div><div id="yui_3_16_0_ym19_1_1491245589792_4937" dir="ltr"><font id="yui_3_16_0_ym19_1_1491245589792_4987" size="6"><b id="yui_3_16_0_ym19_1_1491245589792_4985"><a href="http://www.chron.com/news/houston-texas/texas/article/294-killed-in-New-London-Texas-school-explosion-11010292.php" class="enhancr2_76762a27-0439-b745-4adc-f335e5bbbbca" id="yui_3_16_0_ym19_1_1491245589792_4984">294 killed in New London, Texas school explosion, 80 years ago</a><br></b></font></div><div id="yui_3_16_0_ym19_1_1491245589792_5085"><br></div><div id="enhancr2_76762a27-0439-b745-4adc-f335e5bbbbca" class="yahoo-link-enhancr-card ymail-preserve-class ymail-preserve-style" style="max-width:400px;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;" data-url="http://www.chron.com/news/houston-texas/texas/article/294-killed-in-New-London-Texas-school-explosion-11010292.php" data-type="yenhancr" data-category="article" data-embed-url="" data-size="medium" dir="ltr" contenteditable="false"> <a href="http://www.chron.com/news/houston-texas/texas/article/294-killed-in-New-London-Texas-school-explosion-11010292.php" style="text-decoration:none !important; 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line-height:19px; margin:0 0 4px 0;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;word-break:break-word;">294 killed in New London, Texas school explosion, 80 years ago</h2> <div class="card-description" style="font-size:11px;line-height:15px;color:#999;word-break:break-word;">News of the explosion traveled quickly and residents from the community, oilfield workers, the Texas Rangers, hi...</div> </td> <td style="text-align:right;padding:16px 12px 16px 0;"> </td> </tr> </tbody></table> </td> </tr> </tbody></table> </td> </tr> </tbody></table> </a></div><div id="yui_3_16_0_ym19_1_1491245589792_5149"><br></div><div id="yui_3_16_0_ym19_1_1491245589792_5103"><br></div><div id="yui_3_16_0_ym19_1_1491245589792_5091" dir="ltr"><a href="http://nlsd.net/index2.html" class="enhancr2_820e2a9a-683d-6180-ceed-245829a0d55a" id="yui_3_16_0_ym19_1_1491245589792_5130">New London Texas School Explosion | Home</a><br></div><div id="yui_3_16_0_ym19_1_1491245589792_5336"><br></div><div id="enhancr2_820e2a9a-683d-6180-ceed-245829a0d55a" class="yahoo-link-enhancr-card yahoo-link-enhancr-not-allow-cover ymail-preserve-class ymail-preserve-style" style="max-width:400px;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;" data-url="http://nlsd.net/index2.html" data-type="yenhancr" data-category="article" data-embed-url="" data-size="medium" dir="ltr" contenteditable="false"> <a href="http://nlsd.net/index2.html" style="text-decoration:none !important; color: #000 !important" class="yahoo-enhancr-cardlink" target="_blank" rel="noreferrer" id="yui_3_16_0_ym19_1_1491245589792_5169"> <table class="card-wrapper yahoo-compose-table-card" style="max-width:400px;" id="yui_3_16_0_ym19_1_1491245589792_5168" cellspacing="0" cellpadding="0" border="0"> <tbody id="yui_3_16_0_ym19_1_1491245589792_5167"><tr id="yui_3_16_0_ym19_1_1491245589792_5166"> <td id="yui_3_16_0_ym19_1_1491245589792_5165" width="400"> <table class="card-info yahoo-compose-table-card" style="background:#fff;max-width:400px;border:1px solid #e0e4e9;border-bottom:3px solid #000000;" id="yui_3_16_0_ym19_1_1491245589792_5164" width="100%" cellspacing="0" cellpadding="0" border="0"> <tbody id="yui_3_16_0_ym19_1_1491245589792_5163"><tr id="yui_3_16_0_ym19_1_1491245589792_5162"> <td style="vertical-align:top;padding:16px 0 16px 12px;"> </td> <td style="vertical-align:middle;padding:16px 12px;width:99%;" id="yui_3_16_0_ym19_1_1491245589792_5161"> <h2 class="card-title" style="margin:0 0 4px 0;font-size:16px;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;word-break:break-word;" id="yui_3_16_0_ym19_1_1491245589792_5180">New London Texas School Explosion | Home</h2> <div class="card-description" style="font-size:11px;line-height:15px;color:#999;word-break:break-word;">In Memory of the Men, Women and Children who perished and those who survived</div> </td> <td class="card-share-container"></td> </tr> </tbody></table> </td> </tr> </tbody></table> </a></div><div id="yui_3_16_0_ym19_1_1491245589792_5338"><br></div><div id="yui_3_16_0_ym19_1_1491245589792_4938" dir="ltr"><font id="yui_3_16_0_ym19_1_1491245589792_5208" size="6"><b id="yui_3_16_0_ym19_1_1491245589792_5206"><a href="https://en.wikipedia.org/wiki/New_London_School_explosion" class="enhancr2_1dcd3c5a-3262-dc71-13d4-d9b2a16c811e" id="yui_3_16_0_ym19_1_1491245589792_5205">New London School explosion</a><br></b></font></div><div><br></div><div id="enhancr2_1dcd3c5a-3262-dc71-13d4-d9b2a16c811e" class="yahoo-link-enhancr-card ymail-preserve-class ymail-preserve-style" style="max-width:400px;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;" data-url="https://en.wikipedia.org/wiki/New_London_School_explosion" data-type="yenhancr" data-category="article" data-embed-url="" data-size="medium" dir="ltr" contenteditable="false"> <a href="https://en.wikipedia.org/wiki/New_London_School_explosion" style="text-decoration:none !important; color: #000 !important;" class="yahoo-enhancr-cardlink" target="_blank" rel="noreferrer" id="yui_3_16_0_ym19_1_1491245589792_5231"> <table class="card-wrapper yahoo-ignore-table" style="max-width:400px;" id="yui_3_16_0_ym19_1_1491245589792_5230" cellspacing="0" cellpadding="0" border="0"> <tbody id="yui_3_16_0_ym19_1_1491245589792_5229"><tr id="yui_3_16_0_ym19_1_1491245589792_5228"> <td id="yui_3_16_0_ym19_1_1491245589792_5227" width="400"> <table class="card yahoo-ignore-table" style="max-width:400px;" id="yui_3_16_0_ym19_1_1491245589792_5226" width="100%" cellspacing="0" cellpadding="0" border="0"> <tbody id="yui_3_16_0_ym19_1_1491245589792_5225"><tr id="yui_3_16_0_ym19_1_1491245589792_5224"> <td class="card-primary-image-cell" style="background:#000 url('https://s.yimg.com/vv//api/res/1.2/e8.OC6hBVwAbq4hXdpNYkw--/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/1937-03-20_Children_Die_As_Gas_Explosion_Shatters_School.ogv/400px--1937-03-20_Children_Die_As_Gas_Explosion_Shatters_School.ogv.jpg.cf.jpg') no-repeat center center;background-size:cover;height:200px;position:relative;" id="yui_3_16_0_ym19_1_1491245589792_5223" valign="top" bgcolor="#000000" background="https://s.yimg.com/vv//api/res/1.2/e8.OC6hBVwAbq4hXdpNYkw--/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/1937-03-20_Children_Die_As_Gas_Explosion_Shatters_School.ogv/400px--1937-03-20_Children_Die_As_Gas_Explosion_Shatters_School.ogv.jpg.cf.jpg"> <!--[if gte mso 9]><v:rect fill="true" stroke="false" style="width:400px;height:218px;position:absolute;top:0;left:0;"><v:fill type="frame" color="#000000" src="https://s.yimg.com/vv//api/res/1.2/e8.OC6hBVwAbq4hXdpNYkw--/YXBwaWQ9bWFpbDtmaT1maWxsO2g9MjAwO3c9NDAw/https://upload.wikimedia.org/wikipedia/commons/thumb/e/e1/1937-03-20_Children_Die_As_Gas_Explosion_Shatters_School.ogv/400px--1937-03-20_Children_Die_As_Gas_Explosion_Shatters_School.ogv.jpg.cf.jpg"/></v:rect><![endif]--> <table class="yahoo-ignore-table" valign="top" style="width:100%;" id="yui_3_16_0_ym19_1_1491245589792_5222" cellspacing="0" cellpadding="0" border="0"> <tbody id="yui_3_16_0_ym19_1_1491245589792_5221"><tr id="yui_3_16_0_ym19_1_1491245589792_5220"> <td style="background:transparent url('https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png') repeat left top;height:200px;" id="yui_3_16_0_ym19_1_1491245589792_5219" valign="top" bgcolor="transparent" background="https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png"> <!--[if gte mso 9]><v:rect fill="true" stroke="false" style="width:400px;height:218px;position:absolute;top:-18px;left:0;"><v:fill type="pattern" color="#000000" src="https://s.yimg.com/nq/storm/assets/enhancrV2/12/overlay-tile.png"/><v:textbox inset="0,0,20px,0"><![endif]--> <table class="yahoo-ignore-table" style="width:100%;height:185px;min-height:185px;" id="yui_3_16_0_ym19_1_1491245589792_5218" height="185"> <tbody id="yui_3_16_0_ym19_1_1491245589792_5217"><tr id="yui_3_16_0_ym19_1_1491245589792_5216"> <td class="card-richInfo2" style="text-align:left;text-align:left;padding:15px 0 0 15px;vertical-align:top;"> </td> <td class="card-actions" style="text-align:right;padding:15px 15px 0 0;vertical-align:top;" id="yui_3_16_0_ym19_1_1491245589792_5215"> <div class="card-share-container"></div> </td> </tr> </tbody></table> <!--[if gte mso 9]></v:textbox></v:rect><![endif]--> </td> </tr> </tbody></table> </td> </tr> <tr> <td> <table class="card-info yahoo-ignore-table" style="background:#fff;position:relative;z-index:2;width:95%;max-width:380px;border:1px solid #e0e4e9;border-bottom:3px solid #000000;margin-top:-40px;margin-left:auto;margin-right:auto;" cellspacing="0" cellpadding="0" border="0" align="center"> <tbody><tr> <td style="background-color:#ffffff;padding:16px 0 16px 12px;vertical-align:top;"> </td> <td style="vertical-align:middle;padding:16px 12px;width:99%;"> <h2 class="card-title" style="font-size: 16px; line-height:19px; margin:0 0 4px 0;font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;word-break:break-word;">New London School explosion</h2> <div class="card-description" style="font-size:11px;line-height:15px;color:#999;word-break:break-word;">The New London School explosion occurred on March 18, 1937, when a natural gas leak caused an explosion, destroy...</div> </td> <td style="text-align:right;padding:16px 12px 16px 0;"> </td> </tr> </tbody></table> </td> </tr> </tbody></table> </td> </tr> </tbody></table> </a></div><div><br></div><div id="yui_3_16_0_ym19_1_1491245589792_4359"><span></span></div><div id="yui_3_16_0_ym19_1_1491245589792_4360"> </div><div class="signature" id="yui_3_16_0_ym19_1_1491245589792_4361"><font id="yui_3_16_0_ym19_1_1469396649289_24341" size="2" color="black" face="Arial, Helvetica, sans-serif"><pre id="yui_3_16_0_ym19_1_1469396649289_24339" style="font-size:9pt;"><br></pre><pre id="yui_3_16_0_ym19_1_1469396649289_24339" style="font-size:9pt;"><tt id="yui_3_16_0_ym19_1_1469396649289_24396"><br></tt><tt id="yui_3_16_0_ym19_1_1469396649289_24396"><font id="yui_3_16_0_ym19_1_1491245589792_5306" face="Arial, Helvetica, sans-serif"><b id="yui_3_16_0_ym19_1_1491245589792_5305">de Charlie<tt><font face="Arial, Helvetica, sans-serif">, N5EXY, </font></tt></b></font> <b id="yui_3_16_0_ym19_1_1491245589792_5157"><font id="yui_3_16_0_ym19_1_1491245589792_5156" face="Arial, Helvetica, sans-serif">Grid EM1Øfl<tt id="yui_3_16_0_ym19_1_1491245589792_5155"><font id="yui_3_16_0_ym19_1_1491245589792_5154" face="Arial, Helvetica, sans-serif">36vu,</font></tt></font></b><br><font id="yui_3_16_0_ym19_1_1491245589792_5304" face="Arial, Helvetica, sans-serif"><b id="yui_3_16_0_ym19_1_1491245589792_5303"><tt id="yui_3_16_0_ym19_1_1491245589792_5302"><font id="yui_3_16_0_ym19_1_1491245589792_5301" face="Arial, Helvetica, sans-serif">South Suburban Greater Hutto</font></tt></b></font></tt></pre></font></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1491245589792_5277"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1491245589792_5285" style="display: block;"> <div style="font-family: Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1491245589792_5284"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_ym19_1_1491245589792_5283"> <div dir="ltr" id="yui_3_16_0_ym19_1_1491245589792_5296"> <font id="yui_3_16_0_ym19_1_1491245589792_5297" size="2" face="Arial"> <hr id="yui_3_16_0_ym19_1_1491245589792_5300" size="1"> <b id="yui_3_16_0_ym19_1_1491245589792_5299"><span style="font-weight:bold;" id="yui_3_16_0_ym19_1_1491245589792_5298">From:</span></b> Robert Bruninga <bruninga@usna.edu><br> <b><span style="font-weight: bold;">To:</span></b> TAPR APRS Mailing List <aprssig@tapr.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Monday, April 3, 2017 10:19 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [aprssig] APRS to the planet rescue? (update)<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_ym19_1_1491245589792_5282"><br><div id="yiv9606581283"><style><!--
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--></style><div id="yui_3_16_0_ym19_1_1491245589792_5281"><div class="yiv9606581283WordSection1" id="yui_3_16_0_ym19_1_1491245589792_5280"><div class="yiv9606581283MsoNormal" id="yui_3_16_0_ym19_1_1491245589792_5295"><span style="font-size:11.0pt;color:#1f497d;" id="yui_3_16_0_ym19_1_1491245589792_5294">That link was no good. This one describes the Google car methane detection project better:</span></div><div class="yiv9606581283MsoNormal" id="yui_3_16_0_ym19_1_1491245589792_5291"><span style="font-size:11.0pt;color:#1f497d;" id="yui_3_16_0_ym19_1_1491245589792_5293"><a rel="nofollow" target="_blank" href="https://www.citylab.com/cityfixer/2017/03/google-street-view-cars-methane-leaks/520719/" id="yui_3_16_0_ym19_1_1491245589792_5292">https://www.citylab.com/cityfixer/2017/03/google-street-view-cars-methane-leaks/520719/</a></span></div><div class="yiv9606581283MsoNormal" id="yui_3_16_0_ym19_1_1491245589792_5290"><span style="font-size:11.0pt;color:#1f497d;"> </span></div><div class="yiv9606581283MsoNormal" id="yui_3_16_0_ym19_1_1491245589792_5289"><span style="font-size:11.0pt;color:#1f497d;" id="yui_3_16_0_ym19_1_1491245589792_5288">And it shows the outstanding difference between Boston with old pipes having leaks everywhere and a newer city with hardly any…</span></div><div class="yiv9606581283MsoNormal" id="yui_3_16_0_ym19_1_1491245589792_5313"><span style="font-size:11.0pt;color:#1f497d;"> </span></div><div class="yiv9606581283MsoNormal" id="yui_3_16_0_ym19_1_1491245589792_5311"><span style="font-size:11.0pt;color:#1f497d;">And we can add Methane to the Hazards symbol overlay set as. “MH”. </span></div><div class="yiv9606581283MsoNormal" id="yui_3_16_0_ym19_1_1491245589792_5279"><span style="font-size:11.0pt;color:#1f497d;"> </span></div><div class="yiv9606581283MsoNormal" id="yui_3_16_0_ym19_1_1491245589792_5310"><span style="font-size:11.0pt;color:#1f497d;" id="yui_3_16_0_ym19_1_1491245589792_5309">Not only the greenhouse problem, but CH4 is not detectible by humans senses… a colorless, odorless, tasteless gas.</span></div><div class="yiv9606581283MsoNormal" id="yui_3_16_0_ym19_1_1491245589792_5308"><span style="font-size:11.0pt;color:#1f497d;"> </span></div><div><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in;"><div class="yiv9606581283MsoNormal"><b><span style="font-size:11.0pt;">From:</span></b><span style="font-size:11.0pt;"> Robert Bruninga [mailto:<a rel="nofollow" ymailto="mailto:bruninga@usna.edu" target="_blank" href="mailto:bruninga@usna.edu">bruninga@usna.edu</a>] <br><b>Sent:</b> Monday, April 03, 2017 10:56 AM<br><b>To:</b> TAPR APRS Mailing List<br><b>Cc:</b> Robert Bruninga<br><b>Subject:</b> APRS to the planet rescue?</span></div></div></div><div class="yiv9606581283MsoNormal"> </div><div><div><div><div class="yiv9606581283MsoNormal">Here's a project. Add a $4 Methane detector to your APRS mobile and help us find the bad methane leaks. Google is adding it to their maping cars. Maybe Amateur Radio and APRS could help?<br><br><a rel="nofollow" target="_blank" href="https://mail.google.com/mail/u/0/#inbox/15b2521854ccaa63"><span style="color:#1f497d;">[bad</span></a><span style="color:#1f497d;"> link was here]</span></div></div><div><div class="yiv9606581283MsoNormal" style="margin-bottom:12.0pt;"><br>Apparently the 2:1 advantage of replacing the high carbon emissions of coal with natural gas, overlooks the fact that the methane released with natural gas extraction methods is 84 times worse than carbon as a green house gas and may more than offset any advantages.</div></div><div class="yiv9606581283MsoNormal" style="margin-bottom:12.0pt;">Just one methane leak a few years ago did more damage than about a million cars a day before it was plugged months later<br><br>.<a rel="nofollow" target="_blank" href="http://www.businessinsider.com/methane-gas-leak-porter-ranch-los-angeles-disaster-largest-in-history-2016-1">http://www.businessinsider.com/methane-gas-leak-porter-ranch-los-angeles-disaster-largest-in-history-2016-1</a></div></div><div class="yiv9606581283MsoNormal">Anyway, a $4 sensor and a tiny processor could add a flag to our mobile packets somehow when levels exceeded some background level</div><div><div class="yiv9606581283MsoNormal"> </div></div><div><div class="yiv9606581283MsoNormal" style="margin-bottom:12.0pt;">Though I am not sure if the sensitivity of these $4 sensors is good enough to find the outdoor area low level leaks, or only detects high concentrations...</div></div><div><div class="yiv9606581283MsoNormal" style="margin-bottom:12.0pt;">I wish I had the time to make one and experiment with the concept. It would make a great fun project. I used to thing a cheap radiation detector would let APRS contribute to plotting radiation hot spots, but I fear the natural gas leaks and fracking damage is going to kill us first.</div></div><div><div class="yiv9606581283MsoNormal" style="margin-bottom:12.0pt;">My thoughts on adding this to APRS is to simply have a processor send out a modified STATUS text when a detection is made. Since APRS was designed around the status being merged-on-receipt with the most recent posit, this is a way of nailing down the location of high methane levels or leaks.</div><div class="yiv9606581283MsoNormal" style="margin-bottom:12.0pt;">Status could simply be >CH4=XXX where XXX is the reading. Format of XXX will be determined to give reasonable scale over expected detections. Then the APRS map could selectively plot any detections.</div><div class="yiv9606581283MsoNormal" style="margin-bottom:12.0pt;">Anyone have more experience with these sensors and the levels of detections expected?</div></div><div><div class="yiv9606581283MsoNormal" style="margin-bottom:12.0pt;">Bob, wb4apr</div></div></div></div></div></div>_______________________________________________<br>aprssig mailing list<br><a ymailto="mailto:aprssig@tapr.org" href="mailto:aprssig@tapr.org">aprssig@tapr.org</a><br><a href="http://www.tapr.org/mailman/listinfo/aprssig" target="_blank">http://www.tapr.org/mailman/listinfo/aprssig</a><br><br><br></div> </div> </div> </div></div></body></html>