{"id":14119,"date":"2025-05-07T07:57:46","date_gmt":"2025-05-07T02:27:46","guid":{"rendered":"https:\/\/johnsonfrancis.org\/techworld\/?p=14119"},"modified":"2025-05-07T07:57:48","modified_gmt":"2025-05-07T02:27:48","slug":"where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr","status":"publish","type":"post","link":"https:\/\/johnsonfrancis.org\/techworld\/where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr\/","title":{"rendered":"Where did I go wrong in decoding SSTV using Goonhilly WebSDR?"},"content":{"rendered":"<iframe loading=\"lazy\" width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/81zYIk3hCEA?si=9uCMAcF_9Lp44Wh3\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n\n<p class=\"wp-block-paragraph\">I was not getting good SSTV pictures from the WebSDR at Goonhilly Earth Station, even after timing well and receiving strong audio signals during SSTV transmission. It was only later that I found out that it was because the mode selection was not on FM and the bandwidth was just at 2.5 kHz, possibly for CW. After selecting FM mode and increasing bandwidth to 25 kHz, fair pictures were obtained, though not that good because it was near the time for loss of signals (LOS).<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I was not getting good SSTV pictures from the WebSDR at Goonhilly Earth Station, even after timing well and receiving strong audio signals during SSTV transmission. It was only later that I found out that it was because the mode selection was not on FM and the bandwidth was just at 2.5 kHz, possibly for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":14121,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-14119","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-amateur-radio-ham-radio"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Where did I go wrong in decoding SSTV using Goonhilly WebSDR? - Johnson&#039;s Techworld<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/johnsonfrancis.org\/techworld\/where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Where did I go wrong in decoding SSTV using Goonhilly WebSDR? - Johnson&#039;s Techworld\" \/>\n<meta property=\"og:description\" content=\"I was not getting good SSTV pictures from the WebSDR at Goonhilly Earth Station, even after timing well and receiving strong audio signals during SSTV transmission. It was only later that I found out that it was because the mode selection was not on FM and the bandwidth was just at 2.5 kHz, possibly for [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/johnsonfrancis.org\/techworld\/where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr\/\" \/>\n<meta property=\"og:site_name\" content=\"Johnson&#039;s Techworld\" \/>\n<meta property=\"article:published_time\" content=\"2025-05-07T02:27:46+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-05-07T02:27:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/johnsonfrancis.org\/techworld\/wp-content\/uploads\/2025\/05\/Where-did-I-go-wrong-initially-in-decoding-SSTV-using-Goonhilly-WebSDR.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"681\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Johnson Francis\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Johnson Francis\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr\\\/\"},\"author\":{\"name\":\"Johnson Francis\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\"},\"headline\":\"Where did I go wrong in decoding SSTV using Goonhilly WebSDR?\",\"datePublished\":\"2025-05-07T02:27:46+00:00\",\"dateModified\":\"2025-05-07T02:27:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr\\\/\"},\"wordCount\":94,\"publisher\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/#\\\/schema\\\/person\\\/6201c843e80ccd3578e6196b1d007027\"},\"image\":{\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/Where-did-I-go-wrong-initially-in-decoding-SSTV-using-Goonhilly-WebSDR.jpg\",\"articleSection\":[\"Amateur Radio (Ham Radio)\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr\\\/\",\"url\":\"https:\\\/\\\/johnsonfrancis.org\\\/techworld\\\/where-did-i-go-wrong-in-decoding-sstv-using-goonhilly-websdr\\\/\",\"name\":\"Where did I go wrong in decoding SSTV using Goonhilly WebSDR? 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