{"id":712,"date":"2025-08-15T12:06:40","date_gmt":"2025-08-15T11:06:40","guid":{"rendered":"https:\/\/karelkeers.nl\/karelkeers.nl\/?p=712"},"modified":"2026-01-12T22:01:18","modified_gmt":"2026-01-12T21:01:18","slug":"dpmr-frequency","status":"publish","type":"post","link":"https:\/\/karelkeers.nl\/karelkeers.nl\/dpmr-frequency\/","title":{"rendered":"PMR Frequency"},"content":{"rendered":"\n<p>Band: 446.0\u2013446.2 MHz<\/p>\n\n\n\n<figure class=\"wp-block-image size-large is-resized\"><a href=\"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-6.png\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"757\" src=\"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-6-1024x757.png\" alt=\"\" class=\"wp-image-738\" style=\"aspect-ratio:1.3529475548203111;width:149px;height:auto\" srcset=\"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-6-1024x757.png 1024w, https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-6-300x222.png 300w, https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-6-768x568.png 768w, https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-6.png 1081w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p> Analog PMR446 uses narrow FM in a 12.5 kHz raster, 16 channels.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image.png\"><img loading=\"lazy\" decoding=\"async\" width=\"728\" height=\"270\" src=\"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image.png\" alt=\"\" class=\"wp-image-719\" style=\"width:151px;height:auto\" srcset=\"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image.png 728w, https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-300x111.png 300w\" sizes=\"auto, (max-width: 728px) 100vw, 728px\" \/><\/a><\/figure>\n\n\n\n<p>dPMR uses FDMA in a 6.25 kHz raster, 32 channels. <br>dPMR -> NXDN -> 4FSK\/FDMA<\/p>\n\n\n\n<p>Used by Icom IC-U20SR<\/p>\n\n\n\n<figure class=\"wp-block-image size-full is-resized\"><a href=\"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-1.png\"><img loading=\"lazy\" decoding=\"async\" width=\"474\" height=\"237\" src=\"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-1.png\" alt=\"\" class=\"wp-image-733\" style=\"width:142px;height:auto\" srcset=\"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-1.png 474w, https:\/\/karelkeers.nl\/karelkeers.nl\/wp-content\/uploads\/2025\/08\/image-1-300x150.png 300w\" sizes=\"auto, (max-width: 474px) 100vw, 474px\" \/><\/a><\/figure>\n\n\n\n<p>PMR446 DMR (Tier 1) uses TDMA in a 12.5 kHz, 16 channels. <\/p>\n\n\n\n<p>Both digital codes uses 4-level FSK modulation at 3.6 kbit\/s<\/p>\n\n\n\n<p>Source: <a href=\"https:\/\/en.wikipedia.org\/wiki\/PMR446\">https:\/\/en.wikipedia.org\/wiki\/PMR446<\/a><\/p>\n\n\n\n<p>Complete overview in Dutch:<\/p>\n\n\n\n<p><a href=\"https:\/\/www.groveld.com\/articles\/pmr-frequencies\">https:\/\/www.groveld.com\/articles\/pmr-frequencies<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.rtlsdr.nl\/pmr-446mhz\">https:\/\/www.rtlsdr.nl\/pmr-446mhz<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Band: 446.0\u2013446.2 MHz Analog PMR446 uses narrow FM in a 12.5 kHz raster, 16 channels. dPMR uses FDMA in a 6.25 kHz raster, 32 channels. dPMR -> NXDN -> 4FSK\/FDMA Used by Icom IC-U20SR PMR446 DMR (Tier 1) uses TDMA in a 12.5 kHz, 16 channels. Both digital codes uses 4-level FSK modulation at 3.6 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[3],"tags":[],"class_list":["post-712","post","type-post","status-publish","format-standard","hentry","category-amateur-radio"],"_links":{"self":[{"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/posts\/712","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/comments?post=712"}],"version-history":[{"count":13,"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/posts\/712\/revisions"}],"predecessor-version":[{"id":741,"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/posts\/712\/revisions\/741"}],"wp:attachment":[{"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/media?parent=712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/categories?post=712"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/karelkeers.nl\/karelkeers.nl\/wp-json\/wp\/v2\/tags?post=712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}