DAEC<\/a><\/p>\n Bocholt<\/a><\/p>\n RC-Network<\/a><\/p>\n More RC-Network<\/a><\/p>\n Laermmessung1a<\/a><\/p>\n Excel sheet for calcs<\/a>\u00a0(download to your pc)<\/p>\n LMFC<\/a><\/p>\n All about audio:\u00a0audio-stuff<\/a><\/p>\n https:\/\/www.modellbau-bocholt.de\/images\/mbg\/dokumente\/flugplatzordnung_2011.pdf<\/p>\n Paragraph 9: 60 dBa at the nearest house!! Which is rather an important fact. Whivh would translate into 78dB(A) at our site!<\/p>\n https:\/\/www.laermorama.ch\/m1_akustik\/schallpegel_w.html#rechnen<\/p>\n <\/p>\n Equipment: \u00a0anything under 200 Euronen is not worth looking at.. It needs to be a Class 2 certified one.<\/p>\n Laserliner<\/a>\u00a0 (various prices, from 160-270, so shop around. ) Can be calibrated!! wich is Very Important! \u00a0Of course those calibrators are not cheap:\u00a0calibrator<\/a>. Why you need one<\/a>\u00a0 (This site has a lot of good ”howto” info.<\/p>\n Wiki:\u00a0Sound meters<\/a><\/p>\n Calibrator<\/a><\/p>\n <\/p>\n We also have a very high back ground noise at the field, caused by the Betuwe Lijn. I have measured in excess of 60 dBA when the train passes on a quit afternoon. The houses that we want to ”protect” are much closer to the railway, so they already suffer from much higher noise then whatever we can add. That’s another story!<\/p>\n These guys did a lot of measurements, so use them to our advantage \ud83d\ude09<\/p>\n https:\/\/www.umweltbundesamt.de\/sites\/default\/files\/medien\/461\/publikationen\/4005.pdf<\/p>\n Our \u00a0location:<\/p>\n https:\/\/www.emmerich.de\/c125747b002691ea\/files\/isophonenkarte_elten.pdf\/$file\/isophonenkarte_elten.pdf?openelement<\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n https:\/\/www.google.nl\/maps\/@51.8666569,6.1551396,769m\/data=!3m1!1e3<\/p>\n Worth mentioning is that the allowed noise level at this location is 59dBA during daylight hours. (in the Lautst\u00e4rkeGleichenkarte Elten above.)<\/p>\n source:\u00a0https:\/\/www.emmerich.de\/de\/inhalt\/drittes-gleis-und-laermschutz\/<\/p>\n So, what is the max level that we are theoretically allowed to produce to reach the 59dBA level?? The distance to the houses is 200 meter (centre of field), therefore a max level is 77dBA is theoretically allowable. This is not to say that we should be lower! \u00a0\u00a0 <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n <\/p>\n Of course, knowing the level does not help you any further if you want to fix_it. Some kind of octave-filter app is almost a must, but most I-phone\/Androids have plenty gadgets to held you find the offending frequencies. (Needless to say, it almost always is the prop\/exhaust noise that is the cause of the problem.)<\/p>\n Procedure: \u00a0from\u00a0https:\/\/www.mfc-hameln-lachem.de\/flugsicherheit\/laermmessung<\/p>\n Die Messungen sind unter folgenden Bedingungen durchzuf\u00fchren:<\/p>\n Auf unserem Gel\u00e4nde gelten folgende Werte:<\/p>\n Also part of the whole thing a flightlog? (automated\/RaspberryPi?)<\/p>\n Find a meter with a usb connection to a laptop and use USB extenders. (For safety mostly)<\/p>\n Make a decent test stand<\/p>\n <\/p>\n <\/p>\n","protected":false},"excerpt":{"rendered":" I found myself volunteering for a role in the Noisy-committee of the club.\u00a0We have to abide by the rules, so the first question is ”what are the rules?” Following is just a collection of bits and pieces, just to get started. DMFV\u00a0 \u00a0\u00a0(pdf LuftVO) DAEC Bocholt RC-Network More RC-Network Laermmessung1a Excel sheet for calcs\u00a0(download to … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":3207,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20,28],"tags":[37,39],"class_list":["post-3196","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-carden","category-sound","tag-carden","tag-noise"],"_links":{"self":[{"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/posts\/3196","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/comments?post=3196"}],"version-history":[{"count":0,"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/posts\/3196\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/media\/3207"}],"wp:attachment":[{"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/media?parent=3196"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/categories?post=3196"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blokland.net\/wp\/wp-json\/wp\/v2\/tags?post=3196"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"FlugPlatz\"](\"https:\/\/blokland.net\/wp\/wp-content\/uploads\/2016\/02\/FlugPlatz-280x400.jpg\")
<\/a>![\"GglMaps\"](\"https:\/\/blokland.net\/wp\/wp-content\/uploads\/2016\/02\/GglMaps-400x388.jpg\")
<\/a><\/p>\n
\n<\/a><\/p>\n![\"MaxSound\"](\"https:\/\/blokland.net\/wp\/wp-content\/uploads\/2016\/02\/MaxSound-1-400x238.jpg\")
<\/a><\/p>\n\n
\n