{"id":45577,"date":"2023-08-24T14:42:36","date_gmt":"2023-08-24T13:42:36","guid":{"rendered":"http:\/\/www.cqdx.ru\/ham\/?p=45577"},"modified":"2023-09-24T16:10:40","modified_gmt":"2023-09-24T16:10:40","slug":"rtl-sdr-blog-v4-dongle","status":"publish","type":"post","link":"https:\/\/www.cqdx.ru\/ham\/new-equipment\/rtl-sdr-blog-v4-dongle\/","title":{"rendered":"RTL-SDR Blog V4 dongle"},"content":{"rendered":"<p>TL-SDR has just launched the\u00a0<strong>RTL-SDR Blog V4 dongle<\/strong>\u00a0for software-defined radio (SDR) enthusiasts based on the Rafael R828D tuner chip with three switchable inputs instead of the R860 chip used in RTL-DSR Blog V3 dongle.<\/p>\n<p>The new model still features the Realtek RTL2832U demodulator found in all previous versions of the SDR USB dongles but adds basic input filtering, integrates an improved LDO for the power circuity leading to fewer heat emissions, and improves HF reception thanks to a built-in upconverter.<\/p>\n<p><a href=\"https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-24-154032.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-45578\" src=\"https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-24-154032.jpg\" alt=\"\" width=\"520\" height=\"270\" srcset=\"https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-24-154032.jpg 815w, https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-24-154032-300x156.jpg 300w, https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-24-154032-768x399.jpg 768w\" sizes=\"auto, (max-width: 520px) 100vw, 520px\" \/><\/a><\/p>\n<p>The main RTL-SDR Blog V4 dongle improvements include:<\/p>\n<ul>\n<li><strong>Improved HF Reception<\/strong>\u00a0thanks to a built-in upconverter instead of using a direct sampling circuit. Some positive consequences are that there\u2019s no more Nyquist folding of signals around 14.4 MHz, improved sensitivity, and adjustable gain on HF.<\/li>\n<li><strong>Improved filtering<\/strong>\u00a0thanks to the three inputs of the R828D tuner chip found in the V4 dongle. Three bands (HF, VHF, and UHF) are captured through the SMA connector with some isolation between the bands and less risk of interference from broadcast stations.<\/li>\n<li><strong>Improved Filtering<\/strong>\u00a0is made possible through the open drain pin on the R828D tuner which connects to notch filters for common interference bands such as broadcast AM, broadcast FM, and the DAB bands.<\/li>\n<li><strong>Improved phase noise<\/strong>\u00a0on strong signals and\u00a0<strong>less heat<\/strong>\u00a0thanks to the improved power supply design with less noise and low consumption.<\/li>\n<li>Various minor changes such as a new bias tee LED and a small cutout hole in the enclosure to more easily tell when the bias tee is on.<\/li>\n<\/ul>\n<p>The R828D chip used to be quite more expensive than the R860 chip, but the price for the latter has significantly increased since the beginning of the year, and the R828D-based V4 dongle now ends up being cheaper than the V3 model. But the latter is not going anywhere because the new dongle does have some disadvantages as well:<\/p>\n<ul>\n<li>Average of 2-3 dB less sensitivity on some bands due to the increased filtering<\/li>\n<li>The new dongle does not work with default drivers and requires the\u00a0<a href=\"https:\/\/github.com\/rtlsdrblog\/rtl-sdr-blog\">RTL-SDR Blog drivers<\/a>.<\/li>\n<li>The R828D tuner chip is not produced anymore, so the V4 dongle should be considered a \u201climited edition\u201d as production will stop once the chip can\u2019t be sourced anymore.<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><a href=\"https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-24-154204.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-45579\" src=\"https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-24-154204.jpg\" alt=\"\" width=\"703\" height=\"564\" srcset=\"https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-24-154204.jpg 701w, https:\/\/www.cqdx.ru\/ham\/wp-content\/uploads\/2023\/08\/Screenshot-2023-08-24-154204-300x241.jpg 300w\" sizes=\"auto, (max-width: 703px) 100vw, 703px\" \/><\/a><\/p>\n<p>&nbsp;<\/p>\n<p>The RTL-SDR Blog V4 dongle\u00a0<a href=\"https:\/\/fave.co\/3P2ADgV\" rel=\"nofollow\">sells for $29.95 on Aliexpress<\/a>\u00a0or\u00a0<a href=\"https:\/\/fave.co\/3QJGaKy\" rel=\"nofollow\">$39.95 with an antenna set<\/a>\u00a0including free shipping to most countries and should become\u00a0<a href=\"https:\/\/amzn.to\/3QKswXC\" rel=\"nofollow\">available on Amazon<\/a>\u00a0within the next two months. You\u2019ll find more information about the new USB SDR dongle in\u00a0<a href=\"https:\/\/www.rtl-sdr.com\/rtl-sdr-blog-v4-dongle-initial-release\/\">the announcement<\/a>.<\/p>\n<div class=\"lyte-wrapper\" title=\"RTL SDR V4 - Now with Built-In HF Upconverter + More Features\" style=\"width:640px;max-width:100%;margin:5px auto;\"><div class=\"lyMe hidef\" id=\"WYL_xnNky4NhVGU\"><div id=\"lyte_xnNky4NhVGU\" data-src=\"https:\/\/i.ytimg.com\/vi\/xnNky4NhVGU\/maxresdefault.jpg\" class=\"pL\"><div class=\"tC\"><div class=\"tT\">RTL SDR V4 - Now with Built-In HF Upconverter + More Features<\/div><\/div><div class=\"play\"><\/div><div class=\"ctrl\"><div class=\"Lctrl\"><\/div><div class=\"Rctrl\"><\/div><\/div><\/div><noscript><a href=\"https:\/\/youtu.be\/xnNky4NhVGU\" rel=\"nofollow\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/i.ytimg.com\/vi\/xnNky4NhVGU\/0.jpg\" alt=\"RTL SDR V4 - Now with Built-In HF Upconverter + More Features\" width=\"640\" height=\"340\" \/><br \/>Watch this video on YouTube<\/a><\/noscript><\/div><\/div><div class=\"lL\" style=\"max-width:100%;width:640px;margin:5px auto;\"><\/div>\n","protected":false},"excerpt":{"rendered":"<p>TL-SDR has just launched the\u00a0RTL-SDR Blog V4 dongle\u00a0for software-defined radio (SDR) enthusiasts based on the Rafael R828D tuner chip with three switchable inputs instead of the R860 chip used in RTL-DSR Blog V3 dongle. The new model still features the Realtek RTL2832U demodulator found in all previous versions of the SDR USB dongles but adds&hellip;<\/p>\n","protected":false},"author":2,"featured_media":45578,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[8],"tags":[304,421],"class_list":["post-45577","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-new-equipment","tag-new-equipment-2","tag-sdr","category-8","description-off"],"_links":{"self":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/posts\/45577","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/comments?post=45577"}],"version-history":[{"count":0,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/posts\/45577\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/media\/45578"}],"wp:attachment":[{"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/media?parent=45577"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/categories?post=45577"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cqdx.ru\/ham\/wp-json\/wp\/v2\/tags?post=45577"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}