{"id":991,"date":"2022-10-09T09:56:59","date_gmt":"2022-10-09T07:56:59","guid":{"rendered":"https:\/\/localdab.org\/?page_id=991"},"modified":"2022-10-22T13:19:11","modified_gmt":"2022-10-22T11:19:11","slug":"glossary-band-iii","status":"publish","type":"page","link":"https:\/\/localdab.org\/index.php\/dab-in-more-detail\/glossary-band-iii\/","title":{"rendered":"Glossary band III"},"content":{"rendered":"\n<h2 class=\"has-large-font-size wp-block-heading\">The VHF frequency band<\/h2>\n\n\n\n<p>The VHF band ranges from 30 to 300MHz. It includes different broadcast bands, amateur radio bands, and aviation bands.<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>VHF Band I ranges from 41 MHz up to 68 MHz Rev. Geneva 2006 (GE06)<\/li><li>VHF Band II ranges from 87.5 MHz up to 108 MHz. It includes the entire FM Broadcasting band in Europe Geneva 1984 (GE84)<\/li><li><strong>VHF Band-III<\/strong> ranges from <strong>174 MHz to 230 MHz<\/strong> for the VHF television band. This 56MHz for analog TV was reallocated to DAB\/DAB<sup>+<\/sup> (see Geneva 2006 (GE06)).<\/li><\/ul>\n\n\n\n<p>In Europe, most countries divided the 56 MHz bandwidth into 8 television channels of 7 MHz (Channel 5 to 12). Some countries did also use 8 Mhz per channel for their analog TV.<\/p>\n\n\n\n<h2 class=\"has-large-font-size wp-block-heading\">The DAB<sup>+<\/sup> frequency band<\/h2>\n\n\n\n<p>The GE06 (Geneva 2006) agreement reallocated the band for DAB\/DAB<sup>+<\/sup>.<br>Each 7 MHz TV channel was divided by 4 to deliver a 1,75 MHz bandwidth for 4 terrestrial DAB\/DAB<sup>+<\/sup> blocks (A, B, C, and D).<\/p>\n\n\n\n<p>People have kept the designation of the former TV channel for the DAB<sup>+<\/sup> channels. The old analog TV channel numbers still identify the MUX. Thus, channel 5A stands true for the former TV channel 5 and A for the first of the four muxes available in the TV channel (A, B, C, D). The DAB<sup>+<\/sup> band possesses a total of 32 frequency blocks for DAB<sup>+<\/sup> MUXes.<\/p>\n\n\n\n<p>In countries such as Norway and Denmark, the additional 10 MHz of channel 13 (230 MHz up to 240 MHz for DAB\/DAB<sup>+<\/sup>. This extra 10 MHz results in 6 DAB\/DAB<sup>+<\/sup> blocks (13A to 13F).<\/p>\n\n\n\n<p><\/p>\n\n\n\n<h2 class=\"has-large-font-size wp-block-heading\">DAB<sup>+<\/sup> band versus FM band<\/h2>\n\n\n\n<p>As radio stations, we need to be aware of the possibilities offered by the system. DAB<sup>+<\/sup> allows 12 stations (in FEC 3A) of 96kbps or even 18 stations of 64 kbps in a MUX. Given they are broadcast simultaneously by a digital system, they are all within the same bandwidth of 1.54 MHz. So very close together without interfering with each other. It would be impossible with FM!<\/p>\n\n\n\n<p>Moreover, the frequency band for DAB<sup>+<\/sup> is more than double, with a capacity of 56 MHz compared to 20.5 MHz for FM. Unlike FM, DAB<sup>+<\/sup> is suitable for SFN (Single Frequency Network). It means broadcasters can always use the same frequency over a large area (country). Thus, DAB<sup>+<\/sup> is pre-eminently the solution to the current limitations on the FM band. As local radio, we need to start realizing and embracing this.<\/p>\n\n\n\n<p><a href=\"https:\/\/localdab.org\/index.php\/dab-in-more-detail\/\" data-type=\"page\" data-id=\"30\">Back<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The VHF frequency band The VHF band ranges from 30 to 300MHz. It includes different broadcast bands, amateur radio bands, and aviation bands. VHF Band I ranges from 41 MHz up to 68 MHz Rev. Geneva 2006 (GE06) VHF Band II ranges from 87.5 MHz up to 108 MHz. It includes the entire FM Broadcasting [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":30,"menu_order":20,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-991","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/localdab.org\/index.php\/wp-json\/wp\/v2\/pages\/991","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/localdab.org\/index.php\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/localdab.org\/index.php\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/localdab.org\/index.php\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/localdab.org\/index.php\/wp-json\/wp\/v2\/comments?post=991"}],"version-history":[{"count":14,"href":"https:\/\/localdab.org\/index.php\/wp-json\/wp\/v2\/pages\/991\/revisions"}],"predecessor-version":[{"id":1209,"href":"https:\/\/localdab.org\/index.php\/wp-json\/wp\/v2\/pages\/991\/revisions\/1209"}],"up":[{"embeddable":true,"href":"https:\/\/localdab.org\/index.php\/wp-json\/wp\/v2\/pages\/30"}],"wp:attachment":[{"href":"https:\/\/localdab.org\/index.php\/wp-json\/wp\/v2\/media?parent=991"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}