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Dit is echter niet verplicht." class=""><span>Account aanmaken</span></a> </li> <li id="pt-login-2" class="user-links-collapsible-item mw-list-item user-links-collapsible-item"><a data-mw="interface" href="/w/index.php?title=Speciaal:Aanmelden&returnto=Slowscantelevisie" title="U wordt van harte uitgenodigd om aan te melden, maar dit is niet verplicht [o]" accesskey="o" class=""><span>Aanmelden</span></a> </li> </ul> </div> </div> </div> <div id="vector-user-links-dropdown" class="vector-dropdown vector-user-menu vector-button-flush-right vector-user-menu-logged-out" title="Meer opties" > <input type="checkbox" id="vector-user-links-dropdown-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-user-links-dropdown" class="vector-dropdown-checkbox " aria-label="Persoonlijke hulpmiddelen" > <label id="vector-user-links-dropdown-label" for="vector-user-links-dropdown-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-ellipsis mw-ui-icon-wikimedia-ellipsis"></span> <span class="vector-dropdown-label-text">Persoonlijke hulpmiddelen</span> </label> <div class="vector-dropdown-content"> <div id="p-personal" class="vector-menu mw-portlet mw-portlet-personal user-links-collapsible-item" title="Gebruikersmenu" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="pt-sitesupport" class="user-links-collapsible-item mw-list-item"><a href="//donate.wikimedia.org/wiki/Special:FundraiserRedirector?utm_source=donate&utm_medium=sidebar&utm_campaign=C13_nl.wikipedia.org&uselang=nl"><span>Doneren</span></a></li><li id="pt-createaccount" class="user-links-collapsible-item mw-list-item"><a href="/w/index.php?title=Speciaal:GebruikerAanmaken&returnto=Slowscantelevisie" title="Registreer u vooral en meld u aan. 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class="vector-toc vector-pinnable-element"> <div class="vector-pinnable-header vector-toc-pinnable-header vector-pinnable-header-pinned" data-feature-name="toc-pinned" data-pinnable-element-id="vector-toc" > <h2 class="vector-pinnable-header-label">Inhoud</h2> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-pin-button" data-event-name="pinnable-header.vector-toc.pin">naar zijbalk verplaatsen</button> <button class="vector-pinnable-header-toggle-button vector-pinnable-header-unpin-button" data-event-name="pinnable-header.vector-toc.unpin">verbergen</button> </div> <ul class="vector-toc-contents" id="mw-panel-toc-list"> <li id="toc-mw-content-text" class="vector-toc-list-item vector-toc-level-1"> <a href="#" class="vector-toc-link"> <div class="vector-toc-text">Top</div> </a> </li> <li id="toc-Werking" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Werking"> <div class="vector-toc-text"> <span class="vector-toc-numb">1</span> <span>Werking</span> </div> </a> <ul id="toc-Werking-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-SSTV-modi" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#SSTV-modi"> <div class="vector-toc-text"> <span class="vector-toc-numb">2</span> <span>SSTV-modi</span> </div> </a> <ul id="toc-SSTV-modi-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-SSTV-frequenties" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#SSTV-frequenties"> <div class="vector-toc-text"> <span class="vector-toc-numb">3</span> <span>SSTV-frequenties</span> </div> </a> <ul id="toc-SSTV-frequenties-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Contacten_leggen" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Contacten_leggen"> <div class="vector-toc-text"> <span class="vector-toc-numb">4</span> <span>Contacten leggen</span> </div> </a> <ul id="toc-Contacten_leggen-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Vermogens" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Vermogens"> <div class="vector-toc-text"> <span class="vector-toc-numb">5</span> <span>Vermogens</span> </div> </a> <ul id="toc-Vermogens-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Jargon" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Jargon"> <div class="vector-toc-text"> <span class="vector-toc-numb">6</span> <span>Jargon</span> </div> </a> <ul id="toc-Jargon-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Ontvangstrapport" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Ontvangstrapport"> <div class="vector-toc-text"> <span class="vector-toc-numb">7</span> <span>Ontvangstrapport</span> </div> </a> <ul id="toc-Ontvangstrapport-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Luisteren" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#Luisteren"> <div class="vector-toc-text"> <span class="vector-toc-numb">8</span> <span>Luisteren</span> </div> </a> <ul id="toc-Luisteren-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-SSTV-gedragsregels" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#SSTV-gedragsregels"> <div class="vector-toc-text"> <span class="vector-toc-numb">9</span> <span>SSTV-gedragsregels</span> </div> </a> <ul id="toc-SSTV-gedragsregels-sublist" class="vector-toc-list"> </ul> </li> </ul> </div> </div> </nav> </div> </div> <div class="mw-content-container"> <main id="content" class="mw-body"> <header class="mw-body-header vector-page-titlebar"> <nav aria-label="Inhoud" class="vector-toc-landmark"> <div id="vector-page-titlebar-toc" class="vector-dropdown vector-page-titlebar-toc vector-button-flush-left" > <input type="checkbox" id="vector-page-titlebar-toc-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-vector-page-titlebar-toc" class="vector-dropdown-checkbox " aria-label="Inhoudsopgave omschakelen" > <label id="vector-page-titlebar-toc-label" for="vector-page-titlebar-toc-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--icon-only " aria-hidden="true" ><span class="vector-icon mw-ui-icon-listBullet mw-ui-icon-wikimedia-listBullet"></span> <span class="vector-dropdown-label-text">Inhoudsopgave omschakelen</span> </label> <div class="vector-dropdown-content"> <div id="vector-page-titlebar-toc-unpinned-container" class="vector-unpinned-container"> </div> </div> </div> </nav> <h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-main">Slowscantelevisie</span></h1> <div id="p-lang-btn" class="vector-dropdown mw-portlet mw-portlet-lang" > <input type="checkbox" id="p-lang-btn-checkbox" role="button" aria-haspopup="true" data-event-name="ui.dropdown-p-lang-btn" class="vector-dropdown-checkbox mw-interlanguage-selector" aria-label="Ga naar een artikel in een andere taal. Beschikbaar in 18 talen" > <label id="p-lang-btn-label" for="p-lang-btn-checkbox" class="vector-dropdown-label cdx-button cdx-button--fake-button cdx-button--fake-button--enabled cdx-button--weight-quiet cdx-button--action-progressive mw-portlet-lang-heading-18" aria-hidden="true" ><span class="vector-icon mw-ui-icon-language-progressive mw-ui-icon-wikimedia-language-progressive"></span> <span class="vector-dropdown-label-text">18 talen</span> </label> <div class="vector-dropdown-content"> <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li class="interlanguage-link interwiki-ca mw-list-item"><a href="https://ca.wikipedia.org/wiki/SSTV" title="SSTV – Catalaans" lang="ca" hreflang="ca" data-title="SSTV" data-language-autonym="Català" data-language-local-name="Catalaans" class="interlanguage-link-target"><span>Català</span></a></li><li class="interlanguage-link interwiki-cs mw-list-item"><a href="https://cs.wikipedia.org/wiki/Slow-scan_television" title="Slow-scan television – Tsjechisch" lang="cs" hreflang="cs" data-title="Slow-scan television" data-language-autonym="Čeština" data-language-local-name="Tsjechisch" class="interlanguage-link-target"><span>Čeština</span></a></li><li class="interlanguage-link interwiki-de mw-list-item"><a href="https://de.wikipedia.org/wiki/Slow_Scan_Television" title="Slow Scan Television – Duits" lang="de" hreflang="de" data-title="Slow Scan Television" data-language-autonym="Deutsch" data-language-local-name="Duits" class="interlanguage-link-target"><span>Deutsch</span></a></li><li class="interlanguage-link interwiki-en mw-list-item"><a href="https://en.wikipedia.org/wiki/Slow-scan_television" title="Slow-scan television – Engels" lang="en" hreflang="en" data-title="Slow-scan television" data-language-autonym="English" data-language-local-name="Engels" class="interlanguage-link-target"><span>English</span></a></li><li class="interlanguage-link interwiki-eo mw-list-item"><a href="https://eo.wikipedia.org/wiki/SSTV" title="SSTV – Esperanto" lang="eo" hreflang="eo" data-title="SSTV" data-language-autonym="Esperanto" data-language-local-name="Esperanto" class="interlanguage-link-target"><span>Esperanto</span></a></li><li class="interlanguage-link interwiki-es mw-list-item"><a href="https://es.wikipedia.org/wiki/SSTV" title="SSTV – Spaans" lang="es" hreflang="es" data-title="SSTV" data-language-autonym="Español" data-language-local-name="Spaans" class="interlanguage-link-target"><span>Español</span></a></li><li class="interlanguage-link interwiki-fa mw-list-item"><a href="https://fa.wikipedia.org/wiki/%D8%AA%D9%84%D9%88%DB%8C%D8%B2%DB%8C%D9%88%D9%86_%DA%A9%D9%86%D8%AF-%D9%BE%D9%88%DB%8C%D8%B4" title="تلویزیون کند-پویش – Perzisch" lang="fa" hreflang="fa" data-title="تلویزیون کند-پویش" data-language-autonym="فارسی" data-language-local-name="Perzisch" class="interlanguage-link-target"><span>فارسی</span></a></li><li class="interlanguage-link interwiki-fi mw-list-item"><a href="https://fi.wikipedia.org/wiki/SSTV" title="SSTV – Fins" lang="fi" hreflang="fi" data-title="SSTV" data-language-autonym="Suomi" data-language-local-name="Fins" class="interlanguage-link-target"><span>Suomi</span></a></li><li class="interlanguage-link interwiki-fr mw-list-item"><a href="https://fr.wikipedia.org/wiki/T%C3%A9l%C3%A9vision_%C3%A0_balayage_lent" title="Télévision à balayage lent – Frans" lang="fr" hreflang="fr" data-title="Télévision à balayage lent" data-language-autonym="Français" data-language-local-name="Frans" class="interlanguage-link-target"><span>Français</span></a></li><li class="interlanguage-link interwiki-gl mw-list-item"><a href="https://gl.wikipedia.org/wiki/Televisi%C3%B3n_de_varrido_lento" title="Televisión de varrido lento – Galicisch" lang="gl" hreflang="gl" data-title="Televisión de varrido lento" data-language-autonym="Galego" data-language-local-name="Galicisch" class="interlanguage-link-target"><span>Galego</span></a></li><li class="interlanguage-link interwiki-ja mw-list-item"><a href="https://ja.wikipedia.org/wiki/%E4%BD%8E%E9%80%9F%E5%BA%A6%E8%B5%B0%E6%9F%BB%E3%83%86%E3%83%AC%E3%83%93%E3%82%B8%E3%83%A7%E3%83%B3" title="低速度走査テレビジョン – Japans" lang="ja" hreflang="ja" data-title="低速度走査テレビジョン" data-language-autonym="日本語" data-language-local-name="Japans" class="interlanguage-link-target"><span>日本語</span></a></li><li class="interlanguage-link interwiki-ko mw-list-item"><a href="https://ko.wikipedia.org/wiki/%EC%A0%80%EC%86%8D_%EC%A3%BC%EC%82%AC_%ED%85%94%EB%A0%88%EB%B9%84%EC%A0%84" title="저속 주사 텔레비전 – Koreaans" lang="ko" hreflang="ko" data-title="저속 주사 텔레비전" data-language-autonym="한국어" data-language-local-name="Koreaans" class="interlanguage-link-target"><span>한국어</span></a></li><li class="interlanguage-link interwiki-pl mw-list-item"><a href="https://pl.wikipedia.org/wiki/SSTV" title="SSTV – Pools" lang="pl" hreflang="pl" data-title="SSTV" data-language-autonym="Polski" data-language-local-name="Pools" class="interlanguage-link-target"><span>Polski</span></a></li><li class="interlanguage-link interwiki-pt mw-list-item"><a href="https://pt.wikipedia.org/wiki/Televis%C3%A3o_de_varredura_lenta" title="Televisão de varredura lenta – Portugees" lang="pt" hreflang="pt" data-title="Televisão de varredura lenta" data-language-autonym="Português" data-language-local-name="Portugees" class="interlanguage-link-target"><span>Português</span></a></li><li class="interlanguage-link interwiki-ru mw-list-item"><a href="https://ru.wikipedia.org/wiki/%D0%A2%D0%B5%D0%BB%D0%B5%D0%B2%D0%B8%D0%B4%D0%B5%D0%BD%D0%B8%D0%B5_%D1%81_%D0%BC%D0%B5%D0%B4%D0%BB%D0%B5%D0%BD%D0%BD%D0%BE%D0%B9_%D1%80%D0%B0%D0%B7%D0%B2%D1%91%D1%80%D1%82%D0%BA%D0%BE%D0%B9" title="Телевидение с медленной развёрткой – Russisch" lang="ru" hreflang="ru" data-title="Телевидение с медленной развёрткой" data-language-autonym="Русский" data-language-local-name="Russisch" class="interlanguage-link-target"><span>Русский</span></a></li><li class="interlanguage-link interwiki-simple mw-list-item"><a href="https://simple.wikipedia.org/wiki/Slow-scan_television" title="Slow-scan television – Simple English" lang="en-simple" hreflang="en-simple" data-title="Slow-scan television" data-language-autonym="Simple English" data-language-local-name="Simple English" class="interlanguage-link-target"><span>Simple English</span></a></li><li class="interlanguage-link interwiki-uk mw-list-item"><a href="https://uk.wikipedia.org/wiki/%D0%A2%D0%B5%D0%BB%D0%B5%D0%B1%D0%B0%D1%87%D0%B5%D0%BD%D0%BD%D1%8F_%D0%B7_%D0%BF%D0%BE%D0%B2%D1%96%D0%BB%D1%8C%D0%BD%D0%BE%D1%8E_%D1%80%D0%BE%D0%B7%D0%B3%D0%BE%D1%80%D1%82%D0%BA%D0%BE%D1%8E" title="Телебачення з повільною розгорткою – Oekraïens" lang="uk" hreflang="uk" data-title="Телебачення з повільною розгорткою" data-language-autonym="Українська" data-language-local-name="Oekraïens" class="interlanguage-link-target"><span>Українська</span></a></li><li class="interlanguage-link interwiki-zh mw-list-item"><a href="https://zh.wikipedia.org/wiki/%E6%85%A2%E6%89%AB%E6%8F%8F%E7%94%B5%E8%A7%86" title="慢扫描电视 – Chinees" lang="zh" hreflang="zh" data-title="慢扫描电视" data-language-autonym="中文" data-language-local-name="Chinees" class="interlanguage-link-target"><span>中文</span></a></li> </ul> <div class="after-portlet after-portlet-lang"><span class="wb-langlinks-edit wb-langlinks-link"><a href="https://www.wikidata.org/wiki/Special:EntityPage/Q1265221#sitelinks-wikipedia" title="Taalkoppelingen bewerken" class="wbc-editpage">Koppelingen bewerken</a></span></div> </div> </div> </div> </header> <div class="vector-page-toolbar"> <div class="vector-page-toolbar-container"> <div id="left-navigation"> <nav aria-label="Naamruimten"> <div id="p-associated-pages" class="vector-menu vector-menu-tabs mw-portlet mw-portlet-associated-pages" > <div class="vector-menu-content"> <ul class="vector-menu-content-list"> <li id="ca-nstab-main" class="selected vector-tab-noicon mw-list-item"><a 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</div> </nav> </div> </div> <div id="bodyContent" class="vector-body" aria-labelledby="firstHeading" data-mw-ve-target-container> <div class="vector-body-before-content"> <div class="mw-indicators"> </div> <div id="siteSub" class="noprint">Uit Wikipedia, de vrije encyclopedie</div> </div> <div id="contentSub"><div id="mw-content-subtitle"></div></div> <div id="mw-content-text" class="mw-body-content"><div class="mw-content-ltr mw-parser-output" lang="nl" dir="ltr"><figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Bestand:SSTV_AVT_BW8_HOUSE_-_PICTURE.jpg" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f4/SSTV_AVT_BW8_HOUSE_-_PICTURE.jpg/260px-SSTV_AVT_BW8_HOUSE_-_PICTURE.jpg" decoding="async" width="260" height="208" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/f/f4/SSTV_AVT_BW8_HOUSE_-_PICTURE.jpg 1.5x" data-file-width="320" data-file-height="256" /></a><figcaption>Voorbeeld transmit SSTV (zwart/wit)</figcaption></figure> <p><b>Slowscantelevisie</b> (afgekort SSTV) is een vorm van <a href="/wiki/Televisie" title="Televisie">televisie</a> die wordt gebruikt door <a href="/wiki/Zendamateur" class="mw-redirect" title="Zendamateur">zendamateurs</a>. Bij SSTV wordt één zwart-witbeeld in ongeveer 7 seconden tijd overgezonden. Tegenwoordig stuurt men meestal beelden met kleur met <a href="/wiki/Resolutie_(digitale_beeldverwerking)" title="Resolutie (digitale beeldverwerking)">resolutie</a> 320x256, wat dan ongeveer 2 minuten duurt. Hierdoor is het dus alleen geschikt voor stilstaande beelden. </p><p>Door de lage snelheid is het signaal geschikt om over een normaal spraakkanaal te versturen zoals een <a href="/wiki/Radiozender" title="Radiozender">radiozender</a> met een <a href="/wiki/Audio" title="Audio">audio</a>-<a href="/wiki/Bandbreedte" title="Bandbreedte">bandbreedte</a> van 3 <a href="/wiki/Hertz_(eenheid)" title="Hertz (eenheid)">kHz</a>. Hierdoor is SSTV zelfs geschikt om over de <a href="/wiki/HF_(radiospectrum)" class="mw-redirect" title="HF (radiospectrum)">HF</a>-banden te worden verstuurd. </p><p>SSTV is eind 1957 ontwikkeld door Copthorn MacDonald (YV2CM). De eerste apparatuur werd in de herfst van 1957 getest op de 11 meterband. De eerste gepubliceerde beschrijving van het systeem was het artikel in twee delen in QST, dat in de augustus- en septembernummers verscheen.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1"><span class="cite-bracket">[</span>1<span class="cite-bracket">]</span></a></sup> </p><p>Naast SSTV is er ook nog ATV, <a href="/wiki/Amateurtelevisie" title="Amateurtelevisie">amateurtelevisie</a>, dat voldoet aan de normen voor "normale" tv-zenders. Met ATV wordt wel een bewegend beeld uitgezonden. </p> <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Werking">Werking</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Slowscantelevisie&veaction=edit&section=1" title="Bewerk dit kopje: Werking" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Slowscantelevisie&action=edit&section=1" title="De broncode bewerken van de sectie: Werking"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Om SSTV te verzenden en ontvangen, wordt er bijna altijd gebruikgemaakt van een <a href="/wiki/Personal_computer" title="Personal computer">pc</a> met een <a href="/wiki/Geluidskaart" title="Geluidskaart">geluidskaart</a>. De <a href="/wiki/Computer" title="Computer">computer</a> zet een <a href="/wiki/Foto" title="Foto">afbeelding</a> om in een SSTV-signaal door iedere kleur zijn eigen toonhoogte te geven en zo rij voor rij de afbeelding te versturen met een zender. Aan de andere kant wordt het signaal opgevangen met een geschikte <a href="/wiki/Ontvanger_(elektronica)" title="Ontvanger (elektronica)">ontvanger</a>, en via de <a href="/wiki/Lijningang" title="Lijningang">lijningang</a> van een geluidskaart in een computer wordt het met speciale <a href="/wiki/Software" title="Software">software</a> weer omgezet naar een afbeelding. </p> <div class="mw-heading mw-heading2"><h2 id="SSTV-modi">SSTV-modi</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Slowscantelevisie&veaction=edit&section=2" title="Bewerk dit kopje: SSTV-modi" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Slowscantelevisie&action=edit&section=2" title="De broncode bewerken van de sectie: SSTV-modi"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>SSTV kan uitgezonden worden in verschillende "modi". Robot, Martin en Scottie zijn de meest bekende en gebruikte. In <a href="/wiki/Europa_(continent)" class="mw-redirect" title="Europa (continent)">Europa</a> gebruikt men meer Martin en in de <a href="/wiki/Verenigde_Staten" title="Verenigde Staten">Verenigde Staten</a> en <a href="/wiki/Japan" title="Japan">Japan</a> gebruikt men vaker Scottie. </p> <table style="text-align:center;"> <tbody><tr> <th>Modus</th> <th>Resolutie</th> <th>Tijd </th></tr> <tr> <td>Zwart/wit</td> <td>160x120</td> <td>8 s </td></tr> <tr> <td>Robot24</td> <td>160x120</td> <td>24 s </td></tr> <tr> <td>Robot36</td> <td>320x240</td> <td>36 s </td></tr> <tr> <td>Robot72</td> <td>320x240</td> <td>72 s </td></tr> <tr> <td>AVT90</td> <td>320x240</td> <td>90 s </td></tr> <tr> <td>Scottie1</td> <td>320x256</td> <td>110 s </td></tr> <tr> <td>Scottie2</td> <td>320x256</td> <td>71 s </td></tr> <tr> <td>ScottieDX</td> <td>320x256</td> <td>269 s </td></tr> <tr> <td>Martin 1</td> <td>320x256</td> <td>114 s </td></tr> <tr> <td>Martin 2</td> <td>320x256</td> <td>58 s </td></tr></tbody></table> <p>Er zijn nog vele andere modi, maar deze worden bijna nooit gebruikt. </p><p>Gebruik op de WARC-banden uitsluitend de volgende, smalbandige SSTV-modes: <b>MP73-N, MP110-N en MP140-N:</b> </p> <ul><li><b>30m: 10,132 en 10,144 MHz</b></li> <li><b>17m: 18,117 MHz</b></li> <li><b>12m: 24,927 MHz</b></li></ul> <div class="mw-heading mw-heading2"><h2 id="SSTV-frequenties">SSTV-frequenties</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Slowscantelevisie&veaction=edit&section=3" title="Bewerk dit kopje: SSTV-frequenties" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Slowscantelevisie&action=edit&section=3" title="De broncode bewerken van de sectie: SSTV-frequenties"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <table style="text-align:center;"> <tbody><tr> <th>Band</th> <th>Oproep</th> <th>Modulatie </th></tr> <tr> <td><a href="/wiki/Golflengte" title="Golflengte">80m</a></td> <td><a href="/wiki/Frequentie" title="Frequentie">3,720 MHz</a></td> <td><a href="/wiki/Enkelzijbandmodulatie" title="Enkelzijbandmodulatie">LSB</a> </td></tr> <tr> <td>80 m</td> <td>3,730 MHz</td> <td>LSB </td></tr> <tr> <td>40 m</td> <td>7,033 MHz</td> <td>LSB </td></tr> <tr> <td>30 m</td> <td>10132 en 10144 MHz</td> <td>USB </td></tr> <tr> <td>20 m</td> <td>14,230 MHz</td> <td><a href="/wiki/Enkelzijbandmodulatie" title="Enkelzijbandmodulatie">USB</a> </td></tr> <tr> <td>17 m</td> <td>18,160 MHz</td> <td>USB </td></tr> <tr> <td>15 m</td> <td>21,340 MHz</td> <td>USB </td></tr> <tr> <td>12 m</td> <td>24,927</td> <td>USB </td></tr> <tr> <td>10 m</td> <td>28,680 MHz</td> <td>USB </td></tr> <tr> <td>10 m</td> <td>28,700 MHz</td> <td>USB </td></tr> <tr> <td>6 m</td> <td>50,300 MHz</td> <td>USB </td></tr> <tr> <td>2 m</td> <td>144,500 MHz</td> <td><a href="/wiki/Frequentiemodulatie" title="Frequentiemodulatie">FM</a> </td></tr> <tr> <td>70 cm</td> <td>433,700 MHz</td> <td>FM </td></tr> <tr> <td>70 cm</td> <td>431,025 MHz</td> <td>FM </td></tr></tbody></table> <div class="mw-heading mw-heading2"><h2 id="Contacten_leggen">Contacten leggen</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Slowscantelevisie&veaction=edit&section=4" title="Bewerk dit kopje: Contacten leggen" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Slowscantelevisie&action=edit&section=4" title="De broncode bewerken van de sectie: Contacten leggen"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Net zoals bij elke hamradiomodus kan iemand twee dingen doen om een QSO (gesprek) te voeren. Men kan <i>CQ (algemene oproep) roepen</i> op een oproep-<a href="/wiki/Frequentie" title="Frequentie">frequentie</a>: dit wordt gedaan door een afbeelding te sturen met daarbij de tekst CQ of CQSSTV en de eigen call-sign. Een ander station kan dan de oproep beantwoorden. Men kan ook <i>luisteren</i> op een oproep-frequentie en een CQ-oproep beantwoorden. </p> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Bestand:CQSSTV_beeld.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/thumb/f/f1/CQSSTV_beeld.png/260px-CQSSTV_beeld.png" decoding="async" width="260" height="208" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/f/f1/CQSSTV_beeld.png/390px-CQSSTV_beeld.png 1.5x, //upload.wikimedia.org/wikipedia/commons/f/f1/CQSSTV_beeld.png 2x" data-file-width="480" data-file-height="384" /></a><figcaption>CQSSTV met afbeelding</figcaption></figure> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/Bestand:CQSSTV_tekst.png" class="mw-file-description"><img src="//upload.wikimedia.org/wikipedia/commons/4/49/CQSSTV_tekst.png" decoding="async" width="160" height="128" class="mw-file-element" data-file-width="160" data-file-height="128" /></a><figcaption>CQSSTV met alleen tekst</figcaption></figure> <div class="mw-heading mw-heading2"><h2 id="Vermogens">Vermogens</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Slowscantelevisie&veaction=edit&section=5" title="Bewerk dit kopje: Vermogens" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Slowscantelevisie&action=edit&section=5" title="De broncode bewerken van de sectie: Vermogens"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Sommige zenders en versterkers kunnen hun volledige vermogen niet voor langere tijd gebruiken zonder oververhit te raken. </p> <div class="mw-heading mw-heading2"><h2 id="Jargon">Jargon</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Slowscantelevisie&veaction=edit&section=6" title="Bewerk dit kopje: Jargon" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Slowscantelevisie&action=edit&section=6" title="De broncode bewerken van de sectie: Jargon"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Zoals bij elke hamradiomodus wordt er ook bij SSTV gebruikgemaakt van de '<a href="/wiki/Q-code" title="Q-code">Q-code</a>' en andere afkortingen zoals 73 (groeten), de (van), TNX (bedankt). Amateurs gebruiken dit deels uit gewoonte maar ook om plaats te besparen. Voorbeeld: "TNX QSO, QRT, 73 de AB1CDE". Dit wil zeggen "Bedankt voor het gesprek, ik stop met uitzenden, groetjes van AB1CDE" </p> <div class="mw-heading mw-heading2"><h2 id="Ontvangstrapport">Ontvangstrapport</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Slowscantelevisie&veaction=edit&section=7" title="Bewerk dit kopje: Ontvangstrapport" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Slowscantelevisie&action=edit&section=7" title="De broncode bewerken van de sectie: Ontvangstrapport"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Een ontvangstrapport, bij SSTV ook wel RSV-rapport genoemd, wordt vaak verzonden bij het antwoorden van een oproep. <a href="/wiki/RST-code" title="RST-code">RSV</a> staat voor Readability (leesbaarheid), Signal Strength (signaalsterkte) en Video Quality (beeldkwaliteit). </p> <dl><dt>Leesbaarheid</dt> <dd>Dit wordt weergegeven door een getal van 1 tot 5, waarbij R1 totaal onleesbaar is en R5 zonder moeite leesbaar is.</dd></dl> <dl><dt>Signaalsterkte</dt> <dd>Dit wordt weergegeven als een getal van 1 tot 9, dit is meestal eenvoudig af te lezen van het ontvangsttoestel tijdens het ontvangen van het beeld. S1 is een zeer zwak signaal dat nauwelijks boven de <a href="/wiki/Ruis_(televisie)" title="Ruis (televisie)">ruis</a> uitkomt, terwijl S9 een zeer sterk signaal is dat 256 keer sterker is dan S1.</dd></dl> <dl><dt>Video</dt> <dd>Dit is de kwaliteit van het ontvangen beeld. Met andere woorden hoeveel ruis er zit in het ontvangen beeld. Dit wordt weergegeven door een getal van V1 tot V5, waarbij V5 is ruisvrij is en V1 meer ruis dan beeld.</dd></dl> <p>De maximumscore die aan een ontvangen beeld kan gegeven worden, is dus R5, S9 en V5. Dit doet men in één getal, bijvoorbeeld: "AB1CDE 595 de FG2HIJ". Hier geeft FG2HIJ een score van R5, S9 en V5 aan AB1CDE, wat dus wil zeggen dat FG2HIJ het beeld perfect ontvangen heeft met een sterk signaal. </p> <div class="mw-heading mw-heading2"><h2 id="Luisteren">Luisteren</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Slowscantelevisie&veaction=edit&section=8" title="Bewerk dit kopje: Luisteren" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Slowscantelevisie&action=edit&section=8" title="De broncode bewerken van de sectie: Luisteren"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Om te luisteren op de hamradio-frequenties is er in de meeste landen geen vergunning vereist. Luisteramateurs kunnen dus meeluisteren en beelden ontvangen. Ze mogen echter zelf geen beelden uitzenden. </p> <div class="mw-heading mw-heading2"><h2 id="SSTV-gedragsregels">SSTV-gedragsregels</h2><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/w/index.php?title=Slowscantelevisie&veaction=edit&section=9" title="Bewerk dit kopje: SSTV-gedragsregels" class="mw-editsection-visualeditor"><span>bewerken</span></a><span class="mw-editsection-divider"> | </span><a href="/w/index.php?title=Slowscantelevisie&action=edit&section=9" title="De broncode bewerken van de sectie: SSTV-gedragsregels"><span>brontekst bewerken</span></a><span class="mw-editsection-bracket">]</span></span></div> <p>Een aantal good practices: </p> <ul><li>Callsign vermelden. Men gebruikt QRZ (Wie heeft geroepen?) als het andere station zijn of haar callsign is vergeten te vermelden.</li> <li>Zenden op een vrije frequentie: een beeld versturen duurt gemiddeld 2 minuten, een antwoord ook. Door 5 minuten te wachten is men zeker dat de frequentie vrij is.</li> <li>Inhoud: politieke of religieuze boodschappen en pornografisch materiaal wordt niet door iedereen gewaardeerd (en is in Nederland voor zendamateurs verboden).</li> <li>Vermogen: niet meer gebruiken dan noodzakelijk.</li></ul> <p>Halve beelden met een klein beetje tekst zijn niet gewenst. Hierdoor moet de software van het tegenstation steeds opnieuw beginnen en dit haalt logboeken overhoop. </p> <div class="toccolours appendix" role="presentation" style="font-size:90%; margin:1em 0 -0.5em; clear:both;"> <div><span style="font-weight:bold">Bronnen, noten en/of referenties</span></div> <div class="reflist" style="list-style-type: decimal;"><div class="mw-references-wrap"><ol class="references"> <li id="cite_note-1"><span class="mw-cite-backlink"><a href="#cite_ref-1">↑</a></span> <span class="reference-text">Quote YV2CM in SSTV-PDXB door Nils-Gustav Ström SM5EEP: <a rel="nofollow" class="external free" href="http://groups.yahoo.com/group/SSTV-PDXB/message/1949">http://groups.yahoo.com/group/SSTV-PDXB/message/1949</a>)</span> </li> </ol></div></div> </div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; position: absolute;"></noscript> <div class="printfooter" data-nosnippet="">Overgenomen van "<a dir="ltr" href="https://nl.wikipedia.org/w/index.php?title=Slowscantelevisie&oldid=58518046">https://nl.wikipedia.org/w/index.php?title=Slowscantelevisie&oldid=58518046</a>"</div></div> <div id="catlinks" class="catlinks" data-mw="interface"><div id="mw-normal-catlinks" class="mw-normal-catlinks"><a href="/wiki/Categorie:Alles" title="Categorie:Alles">Categorieën</a>: <ul><li><a href="/wiki/Categorie:Televisietechniek" title="Categorie:Televisietechniek">Televisietechniek</a></li><li><a href="/wiki/Categorie:Radio" title="Categorie:Radio">Radio</a></li><li><a href="/wiki/Categorie:Radiotechniek" title="Categorie:Radiotechniek">Radiotechniek</a></li></ul></div></div> </div> </main> </div> <div class="mw-footer-container"> <footer id="footer" class="mw-footer" > <ul id="footer-info"> <li id="footer-info-lastmod"> Deze pagina is voor het laatst bewerkt op 16 mrt 2021 om 15:01.</li> <li id="footer-info-copyright">De tekst is beschikbaar onder de licentie <a rel="nofollow" class="external text" href="//creativecommons.org/licenses/by-sa/4.0/deed.nl">Creative Commons Naamsvermelding/Gelijk delen</a>, er kunnen aanvullende voorwaarden van toepassing zijn. 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