{"id":3897,"date":"2023-03-30T18:37:25","date_gmt":"2023-03-30T18:37:25","guid":{"rendered":"https:\/\/csiag.eu\/?p=3897"},"modified":"2023-05-11T19:15:14","modified_gmt":"2023-05-11T19:15:14","slug":"a-radiohullamok-terjedesi-csillapitasa","status":"publish","type":"post","link":"https:\/\/csiag.eu\/hu\/blog\/2023\/03\/30\/ausbreitung-daempfung-von-funkwellen\/","title":{"rendered":"A r\u00e1di\u00f3hull\u00e1mok terjed\u00e9se \u00e9s csillap\u00edt\u00e1sa"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Tartalomjegyz\u00e9k<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/csiag.eu\/hu\/blog\/2023\/03\/30\/ausbreitung-daempfung-von-funkwellen\/#Historie\" >T\u00f6rt\u00e9nelem<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/csiag.eu\/hu\/blog\/2023\/03\/30\/ausbreitung-daempfung-von-funkwellen\/#Ausbreitung\" >Sz\u00f3r\u00f3djon sz\u00e9t<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/csiag.eu\/hu\/blog\/2023\/03\/30\/ausbreitung-daempfung-von-funkwellen\/#Dampfung\" >Cs\u00f6kkent\u00e9s<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/csiag.eu\/hu\/blog\/2023\/03\/30\/ausbreitung-daempfung-von-funkwellen\/#Kabel-_Verbinder-_Dampfungsverluste\" >K\u00e1bel \/ csatlakoz\u00f3 \/ csillap\u00edt\u00e1si vesztes\u00e9gek<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/csiag.eu\/hu\/blog\/2023\/03\/30\/ausbreitung-daempfung-von-funkwellen\/#WLAN_Richtfunkstrecke\" >WLAN \/ r\u00e1di\u00f3s \u00e1tj\u00e1tsz\u00f3 kapcsolat<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/csiag.eu\/hu\/blog\/2023\/03\/30\/ausbreitung-daempfung-von-funkwellen\/#Funkfeldstarke\" >R\u00e1di\u00f3mez\u0151 er\u0151ss\u00e9ge<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/csiag.eu\/hu\/blog\/2023\/03\/30\/ausbreitung-daempfung-von-funkwellen\/#Schutzmasnahmen\" >V\u00e9d\u0151int\u00e9zked\u00e9sek<\/a><\/li><\/ul><\/nav><\/div>\n<span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Olvas\u00e1si id\u0151<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">percek<\/span><\/span>\n<p>A WLAN, a sug\u00e1rterhel\u00e9s \u00e9s az \u00e1rny\u00e9kol\u00e1s t\u00e9m\u00e1ja \u00fajra \u00e9s \u00fajra felmer\u00fcl. A r\u00e1di\u00f3hull\u00e1mok terjed\u00e9s\u00e9nek \u00e9s csillap\u00edt\u00e1s\u00e1nak meg\u00e9rt\u00e9se szint\u00e9n seg\u00edt a r\u00e1di\u00f3technol\u00f3gia kezel\u00e9s\u00e9ben. Ez\u00e9rt az al\u00e1bbiakban r\u00e9szletesebb t\u00e1j\u00e9koztat\u00e1st adunk, b\u00e1r ehhez el\u0151sz\u00f6r alapismeretekre van sz\u00fcks\u00e9g. Kezdetnek teh\u00e1t egy kis sz\u00e1raz elm\u00e9let.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Historie\"><\/span>T\u00f6rt\u00e9nelem<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>1886-ban Heinrich Hertz, akir\u0151l a frekvencia m\u00e9rt\u00e9kegys\u00e9g\u00e9t (Hz) elnevezt\u00e9k, els\u0151k\u00e9nt bizony\u00edtotta k\u00eds\u00e9rletileg az elektrom\u00e1gneses (r\u00e1di\u00f3) hull\u00e1mok l\u00e9tez\u00e9s\u00e9t, amelyet James Clerk Maxwell 1867-ben elm\u00e9letben megj\u00f3solt.<\/p>\n\n\n\n<p>Nikola Tesla 1900. m\u00e1rcius 20-\u00e1n kapta meg els\u0151 szabadalm\u00e1t a vezet\u00e9k n\u00e9lk\u00fcli energia\u00e1tvitelre, a r\u00e1di\u00f3technol\u00f3gi\u00e1ra.<\/p>\n\n\n\n<p>Braun \u00e9s Marconi nev\u00e9hez f\u0171z\u0151dik m\u00e9g a t\u00e1v\u00edr\u00e1s fejleszt\u00e9se, amely a Samuel Finley Breese Morse \u00e1ltal m\u00e1r 1837-ben feltal\u00e1lt elektrom\u00e1gneses t\u00e1v\u00edr\u00f3 \u00e9s a Morse-\u00e1b\u00e9c\u00e9 seg\u00edts\u00e9g\u00e9vel ak\u00e1r 3600 kilom\u00e9teres t\u00e1vols\u00e1gokat is \u00e1thidalt.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ausbreitung\"><\/span>Sz\u00f3r\u00f3djon sz\u00e9t<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Az elektrom\u00e1gneses hull\u00e1mok terjed\u00e9se f\u00fcgg a frekvenci\u00e1t\u00f3l, a topol\u00f3giai \u00e9s a l\u00e9gk\u00f6ri viszonyokt\u00f3l.<\/p>\n\n\n\n<p>A troposzf\u00e9r\u00e1t (17 .. 17 km magass\u00e1gban) \u00e9s a sztratoszf\u00e9r\u00e1t (8 .. 50 km magass\u00e1gban) a F\u00f6ldh\u00f6z k\u00f6zel k\u00f6vet\u0151 ionoszf\u00e9ra r\u00e9tegek (\u00e1tlagos magass\u00e1guk kb. 1000 km) a naptev\u00e9kenys\u00e9gt\u0151l f\u00fcgg\u0151 ioniz\u00e1ci\u00f3s fokuk miatt k\u00e9pesek visszaverni az elektrom\u00e1gneses hull\u00e1mokat. Sz\u00e9ls\u0151s\u00e9ges esetben egy \u00e9ppen sug\u00e1rzott jelet a f\u00f6ldgoly\u00f3 k\u00f6r\u00fcli (kb. 40 000 km-es ker\u00fclet) ism\u00e9telt visszaver\u0151d\u00e9ssel, az \u00e1tfut\u00e1si id\u0151vel (300 000 km\/s) k\u00e9sleltetve ugyanazon a helyen \u00fajra lehet fogni.<\/p>\n\n\n\n<p>K\u00f6r\u00fclbel\u00fcl 60 MHz felett a r\u00e1di\u00f3hull\u00e1mok \u00fagy terjednek, mint a f\u00e9ny. Az akad\u00e1lyok elt\u00e9r\u00edthetik \u00e9s visszaverhetik \u0151ket. K\u00fcl\u00f6n\u00f6sen 100 MHz felett a r\u00e1di\u00f3hull\u00e1mok terjed\u00e9s\u00e9t egyre ink\u00e1bb zavarj\u00e1k a visszaver\u0151d\u00e9sek. A legkedvez\u0151tlenebb esetben a hull\u00e1mhegyek \u00e9s hull\u00e1mv\u00f6lgyek kiolthatj\u00e1k egym\u00e1st.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"D\u00e4mpfung\"><span class=\"ez-toc-section\" id=\"Dampfung\"><\/span>Cs\u00f6kkent\u00e9s<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A csillap\u00edt\u00e1s a jel csillap\u00edt\u00e1sa. A csillap\u00edt\u00e1st decibelben (dB) vagy decibel milliwattban (dBm), illetve nagyobb teljes\u00edtm\u00e9nyszintek eset\u00e9n decibel wattban (dBW) m\u00e9rik logaritmikus form\u00e1ban, hogy a magasabb szinteket praktikusan szeml\u00e9ltetni lehessen.<\/p>\n\n\n\n<p>Fontos k\u00fcl\u00f6nbs\u00e9get tenni a sz\u00e1zal\u00e9kban \u00e9s a dB-ben megadott csillap\u00edt\u00e1si \u00e9rt\u00e9kek k\u00f6z\u00f6tt, a hangok eset\u00e9ben a db(A) \"A\" az emberi hall\u00e1sg\u00f6rb\u00e9hez igazod\u00f3 \u00e9rt\u00e9ket jelenti (figyelembe v\u00e9ve, hogy a magas \u00e9s a m\u00e9ly hangokat azonos hanger\u0151 mellett m\u00e1sk\u00e9pp \u00e9rz\u00e9kelj\u00fck).<\/p>\n\n\n\n<p>A decibel \u00e1ltal\u00e1ban egy er\u0151s\u00edt\u00e9si \u00e9rt\u00e9ket jel\u00f6l, azaz az \u00e9rt\u00e9k pozit\u00edv. A negat\u00edv el\u0151jel teh\u00e1t csillap\u00edt\u00e1st \u00edr le.<br>A 100 dB a 0 dB hangnyom\u00e1s 100 000-szeres\u00e9t, vagy 2 pa (Pascal) hangnyom\u00e1st jelent.<\/p>\n\n\n\n<table id=\"tablepress-2\" class=\"tablepress tablepress-id-2\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Zaj<\/th><th class=\"column-2\">db(A)<\/th><th class=\"column-3\">\u00c1rny\u00e9kol\u00e1s (dB)<\/th><th class=\"column-4\">%<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">K\u00f6rf\u0171r\u00e9sz<\/td><td class=\"column-2\">90<\/td><td class=\"column-3\">10<\/td><td class=\"column-4\">90<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">Aut\u00f3p\u00e1lya napok<\/td><td class=\"column-2\">80<\/td><td class=\"column-3\">20<\/td><td class=\"column-4\">99<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">F\u0151utca nappal<\/td><td class=\"column-2\">70<\/td><td class=\"column-3\">30<\/td><td class=\"column-4\">99,9<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">F\u0151\u00fat \u00e9jszaka<\/td><td class=\"column-2\">60<\/td><td class=\"column-3\">40<\/td><td class=\"column-4\">99,99<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">Mell\u00e9kutca napk\u00f6zben<\/td><td class=\"column-2\">50<\/td><td class=\"column-3\">50<\/td><td class=\"column-4\">99,999<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">Mell\u00e9k\u00fat \u00e9jszaka<\/td><td class=\"column-2\">40<\/td><td class=\"column-3\">60<\/td><td class=\"column-4\">99,999.9<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">\u00d3ra h\u00edmz\u00e9s<\/td><td class=\"column-2\">30<\/td><td class=\"column-3\">70<\/td><td class=\"column-4\">99,999.99<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">Lev\u00e9lzaj<\/td><td class=\"column-2\">20<\/td><td class=\"column-3\">80<\/td><td class=\"column-4\">99,999.999<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">L\u00e9gz\u00e9si hang<\/td><td class=\"column-2\">10<\/td><td class=\"column-3\">90<\/td><td class=\"column-4\">99,999.999.9<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">Csend<\/td><td class=\"column-2\">0<\/td><td class=\"column-3\">100<\/td><td class=\"column-4\">99,999.999.99<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-2 from cache -->\n\n\n<p>Hogy k\u00e9pet kapjunk arr\u00f3l, hogy egy anyagnak mekkora a r\u00e1di\u00f3hull\u00e1mok \u00e1ltal \u00e1thatol\u00f3 csillap\u00edt\u00f3 k\u00e9pess\u00e9ge, \u00f6sszehasonl\u00edtjuk egy &lt;30 cm vastags\u00e1g\u00fa \u00e9p\u00fclet mennyezet\u00e9t (70%) \u00e9s egy 1 mm-n\u00e9l kisebb vastags\u00e1g\u00fa dr\u00f3th\u00e1l\u00f3t (100%), vagy egy 10 cm-n\u00e9l kisebb vastags\u00e1g\u00fa gipszkarton v\u00e1laszfalat (10%).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Kabel-_Verbinder-_Dampfungsverluste\"><\/span>K\u00e1bel \/ csatlakoz\u00f3 \/ csillap\u00edt\u00e1si vesztes\u00e9gek<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Ha a r\u00e1di\u00f3hull\u00e1mok k\u00e1beleken, dugaszokon, csatlakoz\u00f3kon stb. haladnak \u00e1t, pl. a r\u00e1di\u00f3t\u00f3l az antenn\u00e1hoz vezet\u0151 \u00faton, akkor itt is csillap\u00edt\u00e1si vesztes\u00e9gek keletkeznek. Az alkalmazott antennak\u00e1bel t\u00edpusa \u00e9s hossza, valamint a dugaszcsatlakoz\u00e1sok hat\u00e1rozz\u00e1k meg a teljes csillap\u00edt\u00e1si vesztes\u00e9gek nagys\u00e1g\u00e1t.<\/p>\n\n\n\n<p>\u00d6k\u00f6lszab\u00e1lyk\u00e9nt a csillap\u00edt\u00e1si vesztes\u00e9gek \u00f6sszege nem haladhatja meg az antenna nyeres\u00e9g\u00e9t. Az egyes komponenseket ennek megfelel\u0151en kell kiv\u00e1lasztani.<\/p>\n\n\n\n<p>A k\u00e1belt\u00edpus - sodrott vagy merev vezet\u00e9k, \u00e1rny\u00e9kol\u00e1s, k\u00f6penyszerkezet, hossz\u00fas\u00e1g \u00e9s a haszn\u00e1lni k\u00edv\u00e1nt frekvencia - szint\u00e9n figyelembe veend\u0151 szempontok az antennak\u00e1bel kiv\u00e1laszt\u00e1sakor. A szerkezeti felhaszn\u00e1l\u00e1s is meghat\u00e1roz\u00f3: a halog\u00e9n k\u00e1belek h\u0151\u00e1ll\u00f3ak \u00e9s l\u00e1ng\u00e1ll\u00f3ak, a hornyolt k\u00e1beleket alagutakba t\u00f6rt\u00e9n\u0151 be\u00e9p\u00edt\u00e9shez haszn\u00e1lj\u00e1k.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"WLAN_Richtfunkstrecke\"><\/span>WLAN \/ r\u00e1di\u00f3s \u00e1tj\u00e1tsz\u00f3 kapcsolat<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>A WLAN sz\u00e1m\u00e1ra a 2,4 GHz, 5 \u00e9s 6 GHz, valamint a 24 \u00e9s 60 GHz frekvenci\u00e1k \u00e1llnak rendelkez\u00e9sre. Ha falakon \u00e9s mennyezeteken kereszt\u00fcl nagy hat\u00f3t\u00e1vols\u00e1got szeretne el\u00e9rni, v\u00e1lassza a legalacsonyabb frekvenci\u00e1kat, azaz a 2,4 GHz-et. Ezek egy csal\u00e1di h\u00e1zon bel\u00fcl is rendelkeznek hat\u00f3t\u00e1vols\u00e1ggal. Az ikerh\u00e1zak eset\u00e9ben tartsa szem el\u0151tt, hogy ez a szomsz\u00e9d sz\u00e1m\u00e1ra is elegend\u0151. Ha nagy adat\u00e1tviteli sebess\u00e9get szeretne r\u00f6vid t\u00e1vols\u00e1gokon, haszn\u00e1lja az 5 GHz-et, mivel ez alig hatol \u00e1t a padl\u00f3n vagy a mennyezeten. Ugyanez vonatkozik a 6 GHz-es s\u00e1vra is.<br>A 24 \u00e9s 60 GHz-es frekvenci\u00e1k viszont 200 ... 1.000 m. A l\u00e1t\u00f3t\u00e1vols\u00e1g itt el\u0151felt\u00e9tel. Az es\u0151, a k\u00f6d, a h\u00f3es\u00e9s stb. \u00e1tviteli vesztes\u00e9geket okozhat, amelyek technikai \u00f3vint\u00e9zked\u00e9sekkel r\u00e9szben ellens\u00falyozhat\u00f3k.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Funkfeldstarke\"><\/span>R\u00e1di\u00f3mez\u0151 er\u0151ss\u00e9ge<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p>Az elektromos berendez\u00e9sek r\u00e1di\u00f3s t\u00e9rer\u0151ss\u00e9ge 1 ... 2 mW, egy r\u00e1di\u00f3kapcsolat k\u00f6r\u00fclbel\u00fcl 10 mW, a WLAN 2,4 GHz-en 100 mW, 5 GHz-en 200 mW, egy mikrohull\u00e1m\u00fa 800 mW \u00e9s egy mobiltelefon 2000 mW.<\/p>\n\n\n\n<p>\u00c1ltal\u00e1ban a nagyfrekvenci\u00e1s elektrom\u00e1gneses mez\u0151kre hat\u00e1r\u00e9rt\u00e9kek vonatkoznak, amelyek az \u00fagynevezett SAR (Specific Absorption Rate) \u00e9rt\u00e9kek\u00e9nt \u00edrj\u00e1k le, hogy az emberi sz\u00f6vetek \u00e1ltal elviselhet\u0151 energiafogyaszt\u00e1s milyen m\u00e9rt\u00e9k\u0171.<\/p>\n\n\n\n<p>Az eg\u00e9sz emberi testre \u00e1tlagolva 0,08 W\/kg, az egyes ter\u00fcletekre vonatkoztatva, pl. fej (mobiltelefon) 2 W\/kg.<\/p>\n\n\n\n<p>A mobiltelefon a f\u00fcl\u00f6n m\u00e1r a megengedett legnagyobb terhel\u00e9snek teszi ki a szervezetet.<\/p>\n\n\n\n<p>Az elektrom\u00e1gneses sug\u00e1rz\u00e1snak val\u00f3 kitetts\u00e9g hat\u00e1s\u00e1ra az \u00e9rz\u00e9keny emberekn\u00e9l a v\u00e9rnyom\u00e1s-szab\u00e1lyoz\u00e1si zavarok, depresszi\u00f3, hormon\u00e1lis zavarok, immunrendszer elnyom\u00e1sa, koncentr\u00e1ci\u00f3s zavarok, fejf\u00e1j\u00e1s, f\u00e1radts\u00e1g, alv\u00e1szavarok, sz\u00e9d\u00fcl\u00e9s, h\u00e1nyinger \u00e9s nyugtalans\u00e1g l\u00e9phetnek fel.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Schutzmasnahmen\"><\/span>V\u00e9d\u0151int\u00e9zked\u00e9sek<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>A WLAN-router hely\u00e9t a lehet\u0151 legt\u00e1volabb v\u00e1lassza ki a munkahelyt\u0151l.<\/li>\n\n\n\n<li>Haszn\u00e1lja a frekvencias\u00e1vot a t\u00e9nyleges ig\u00e9nyeknek megfelel\u0151en.<\/li>\n\n\n\n<li>A WLAN kikapcsol\u00e1sa, ha nem haszn\u00e1lja. <\/li>\n<\/ol>\n\n\n\n<p>Ha meg akarja v\u00e9deni mag\u00e1t az elektrom\u00e1gneses sug\u00e1rz\u00e1snak val\u00f3 k\u00fcls\u0151 kitetts\u00e9gt\u0151l, otthon\u00e1t Faraday-kalitkak\u00e9nt alak\u00edthatja ki. Ebben az esetben v\u00e9kony f\u00e9mh\u00e1l\u00f3b\u00f3l, r\u00e9zf\u00f3li\u00e1b\u00f3l vagy sz\u00fcks\u00e9g eset\u00e9n alum\u00edniumf\u00f3li\u00e1b\u00f3l k\u00e9sz\u00fclt lapokat helyeznek a falburkolat\/tap\u00e9ta vagy speci\u00e1lis EMC tap\u00e9ta al\u00e1, amelynek h\u00e1toldala f\u00e9mbevonat\u00fa. Fontos, hogy minden egyes lapnak elektromos kapcsolata legyen a szomsz\u00e9dos lappal, az ablak\u00fcvegek is f\u00e9mezettek legyenek, \u00e9s ez a r\u00e9teg is csatlakozzon a fal \u00e1rny\u00e9kol\u00e1s\u00e1hoz.<br>A teljes berendez\u00e9st az \u00e9p\u00fclet potenci\u00e1l kiegyenl\u00edt\u0151 rendszer\u00e9hez kell csatlakoztatni a megfelel\u0151 f\u00f6ldel\u00e9s biztos\u00edt\u00e1sa \u00e9rdek\u00e9ben.<\/p>\n\n\n\n<p>\u00cdgy ez a helyis\u00e9g biztons\u00e1gban van a k\u00fcls\u0151 elektrom\u00e1gneses hat\u00e1sokt\u00f3l; \u00e9s ford\u00edtva, a WLAN-router r\u00e1di\u00f3forgalma ebben a helyis\u00e9gben v\u00e9dve van a k\u00fcls\u0151 lehallgat\u00f3kkal szemben.<\/p>\n\n\n\n<p>Az elektroszmog \u00e9s az \u00e1rny\u00e9kol\u00e1stechnika t\u00e9m\u00e1j\u00e1t ez a cikk t\u00e1rgyalja <a href=\"https:\/\/csiag.eu\/hu\/elektroszmog\/\" data-type=\"post\" data-id=\"4186\" target=\"_blank\" rel=\"noreferrer noopener\">Hozz\u00e1j\u00e1rul\u00e1s<\/a> k\u00fcl\u00f6n kezelik.<\/p>\n\n\n\n<p class=\"has-text-color\" style=\"color:#fe0000\">Az elektromos rendszereken v\u00e9gzett minden munk\u00e1t csak szakk\u00e9pzett szem\u00e9lyzet v\u00e9gezhet!<\/p>","protected":false},"excerpt":{"rendered":"<p><span class=\"span-reading-time rt-reading-time\" style=\"display: block;\"><span class=\"rt-label rt-prefix\">Olvas\u00e1si id\u0151<\/span> <span class=\"rt-time\"> 3<\/span> <span class=\"rt-label rt-postfix\">percek<\/span><\/span>A WLAN, a sug\u00e1rterhel\u00e9s \u00e9s az \u00e1rny\u00e9kol\u00e1s t\u00e9m\u00e1ja \u00fajra \u00e9s \u00fajra felmer\u00fcl. A r\u00e1di\u00f3hull\u00e1mok terjed\u00e9s\u00e9nek \u00e9s csillap\u00edt\u00e1s\u00e1nak meg\u00e9rt\u00e9se szint\u00e9n seg\u00edt a r\u00e1di\u00f3technol\u00f3gia kezel\u00e9s\u00e9ben. Ez\u00e9rt az al\u00e1bbiakban r\u00e9szletesebb t\u00e1j\u00e9koztat\u00e1st adunk, b\u00e1r ehhez el\u0151sz\u00f6r alapismeretekre van sz\u00fcks\u00e9g. Kezdetnek teh\u00e1t egy kis sz\u00e1raz elm\u00e9let. T\u00f6rt\u00e9nelem Heinrich Hertz, a frekvencia m\u00e9rt\u00e9kegys\u00e9ge (Hz) ut\u00e1n...&nbsp;<a href=\"https:\/\/csiag.eu\/hu\/blog\/2023\/03\/30\/ausbreitung-daempfung-von-funkwellen\/\" rel=\"bookmark\">Olvass tov\u00e1bb \"<span class=\"screen-reader-text\">A r\u00e1di\u00f3hull\u00e1mok terjed\u00e9se \u00e9s csillap\u00edt\u00e1sa<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","footnotes":""},"categories":[359,1302,345,358,357],"tags":[566,1326,1304,1340,1312,1305,1325,1319,1331,1341,1318,1323,1333,1349,1350,557,1336,1324,1307,1306,1335,1328,1310,1342,1317,1343,1344,1322,1313,1311,1351,1338,1337,1309,1345,1352,514,1330,1339,1327,1346,1329,1334,1347,1332,1320,1303,1316,1314,1308,1315,1101,1348,1321,563],"class_list":["post-3897","post","type-post","status-publish","format-standard","hentry","category-cb-funk-im-wohnmobil","category-funktechnik","category-kommunikation-lte","category-verbindung-zu-wlan-access-points","category-wlan-richtfunk-technik","tag-antenne","tag-antennengewinn","tag-ausbreitung","tag-blutdruckdysregulation","tag-braun","tag-daempfung","tag-daempfungsverluste","tag-daempfungsvermoegen","tag-datenraten","tag-depressionen","tag-dezibel","tag-drahtgewebe","tag-dunst","tag-faraday","tag-faradayscher-kaefig","tag-frequenz","tag-funkfeldstaerke","tag-funkgeraet","tag-funktechnik","tag-funkwellen","tag-grenzwerte","tag-halogenkabel","tag-hertz","tag-immunsupression","tag-ionosphaere","tag-konzentrationsstoerungen","tag-kopfschmerzen","tag-kupplung","tag-marconi","tag-maxwell","tag-metallbedampft","tag-mikrowelle","tag-mobiltelefons","tag-morse","tag-muedigkeit","tag-potenzialausgleich","tag-regen","tag-richtfunkstrecken","tag-sar","tag-schirmung","tag-schlafstoerungen","tag-schlitzkabel","tag-schneefall","tag-schwindel","tag-sichtverbindung","tag-stecker","tag-strahlungsbelastung","tag-stratosphaere","tag-telegrafen","tag-telegrafie","tag-troposphaere","tag-uebelkeit","tag-unruhe","tag-verbinder","tag-wlan"],"modified_by":"Achim Goerner","_links":{"self":[{"href":"https:\/\/csiag.eu\/hu\/wp-json\/wp\/v2\/posts\/3897","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/csiag.eu\/hu\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/csiag.eu\/hu\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/csiag.eu\/hu\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/csiag.eu\/hu\/wp-json\/wp\/v2\/comments?post=3897"}],"version-history":[{"count":0,"href":"https:\/\/csiag.eu\/hu\/wp-json\/wp\/v2\/posts\/3897\/revisions"}],"wp:attachment":[{"href":"https:\/\/csiag.eu\/hu\/wp-json\/wp\/v2\/media?parent=3897"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/csiag.eu\/hu\/wp-json\/wp\/v2\/categories?post=3897"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/csiag.eu\/hu\/wp-json\/wp\/v2\/tags?post=3897"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}