{"id":41236,"date":"2025-07-10T02:28:58","date_gmt":"2025-07-10T01:28:58","guid":{"rendered":"https:\/\/rsgb.org\/main\/?p=41236"},"modified":"2026-05-01T16:47:56","modified_gmt":"2026-05-01T15:47:56","slug":"ast-spacemobile-and-430-440mhz","status":"publish","type":"post","link":"https:\/\/rsgb.org\/main\/blog\/spectrum-forum-posts-overview\/spectrum-forum-papers-consultations\/2025\/07\/10\/ast-spacemobile-and-430-440mhz\/","title":{"rendered":"AST SpaceMobile and 430-440MHz"},"content":{"rendered":"<p>In 2025, the prospect of a USA constellation of 248 large commercial satellites that would use 430-440MHz for wideband control and telemetry, prompted an unprecedented international response from the amateur community:-<\/p>\n<ul>\n<li><strong>FCC:\u00a0<\/strong> <a href=\"https:\/\/rsgb.org\/main\/files\/2025\/07\/FCC-Public-Notice_DA-25-532A1_Jun-2025.pdf\"><strong>Public Notice re AST Application<\/strong><\/a>\u00a0 &#8211; 20-June-2025<\/li>\n<li><strong>RSGB: <a href=\"https:\/\/rsgb.org\/main\/files\/2025\/07\/250721_RSGB-Comments-re-FCC-AST-25-201.pdf\">Response &amp; Comments<\/a> <\/strong>\u00a0&#8211; 21-Jul-2025<\/li>\n<li><strong>IARU:<\/strong> <a href=\"https:\/\/www.iaru.org\/iaru-position-on-theutilization-of-the-430-440-mhz-amateur-band-by-astspacemobile-satellite-constellation\/\"><strong>Statement and Position<\/strong><\/a>\u00a0 &#8211; 18-Jul-2025<\/li>\n<li><strong>ARRL: <a href=\"https:\/\/www.arrl.org\/news\/arrl-files-comments-to-protect-70-centimeter-amateur-band\">News item and Initial Response<\/a>\u00a0<\/strong> &#8211; 22-Jul-2025<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>The FCC Electronic Comment Filing System received a total of over 2500 responses, including from over a dozen IARU Member Societies, as well as Amsat groups, ARISS etc<\/p>\n<ul>\n<li>FCC: <strong><a href=\"https:\/\/www.fcc.gov\/ecfs\/search\/search-filings\/results?q=(proceedings.name:(%2225-201%22))\">Online Comments for Space Bureau Docket 25-201<\/a><\/strong><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p>Note: The primary deadline for comments was 21-July-2025, with follow-on responses to comments by 5-Aug-2025, which included:<\/p>\n<ul>\n<li><strong>ARRL: <a href=\"https:\/\/rsgb.org\/main\/files\/2025\/08\/ARRL_Reply-Comments_25-201-08_05_2025.pdf\">Reply Comments<\/a>\u00a0<\/strong><\/li>\n<li><strong>AST:\u00a0 \u00a0<a href=\"https:\/\/rsgb.org\/main\/files\/2025\/08\/AST_Consolidated-Response.pdf\">Consolidated Response<\/a><\/strong><\/li>\n<li><strong>IARU: <a href=\"https:\/\/www.iaru.org\/comments-filed-by-iaru-member-societies-results-in-decision-regarding-ast-space-mobile-expansion-in-the-430-440-mhz-band\/\">Update<\/a> \u00a0<\/strong>&#8211; 9-Sep-2025<\/li>\n<\/ul>\n<p>The initial scenario was that only a handful of early satellites would use 430-440MHz, which would need to be under ITU-R Article 4.4 as there is no allocation for such use.<\/p>\n<hr width=\"67%\" \/>\n<p>&nbsp;<\/p>\n<h4><strong>Update &#8211; April-2026<\/strong><\/h4>\n<ul>\n<li><strong>FCC <a href=\"https:\/\/docs.fcc.gov\/public\/attachments\/DA-26-391A1.pdf\">Authorisation<\/a><\/strong> &#8211; DA 26-391 (inc extending 430MHz to all 248 satellites)<\/li>\n<li><strong>IARU <a href=\"https:\/\/www.iaru.org\/fcc-approves-ast-space-mobiles-license-for-emergency-ttc-operations-in-the-430-440-mhz-amateur-radio-band-outside-the-us\/\">Statement<\/a><\/strong> &#8211; including comments on ITU-R Article-4.4<\/li>\n<li><strong>RSGB <a href=\"https:\/\/rsgb.org\/main\/blog\/news\/gb2rs\/headlines\/2026\/05\/01\/fcc-authorises-commercial-satellite-constellation-use-in-the-70cm-band\/\">News Item<\/a><\/strong><\/li>\n<li><strong>ARRL <a href=\"https:\/\/www.arrl.org\/news\/fcc-approves-limited-emergency-use-of-70-cm-band-by-ast-spacemobile-satellites-outside-the-us\">News item<\/a><\/strong><\/li>\n<li><strong>FCC <a href=\"https:\/\/docs.fcc.gov\/public\/attachments\/DOC-420983A1.pdf\">Press Release<\/a><\/strong><\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In 2025, the prospect of a USA constellation of 248 large commercial satellites that would use 430-440MHz for wideband control and telemetry, prompted an unprecedented international response from the amateur community:- FCC:\u00a0 Public Notice re AST Application\u00a0 &#8211; 20-June-2025 RSGB: Response &amp; Comments \u00a0&#8211; 21-Jul-2025 IARU: Statement and Position\u00a0 &#8211; 18-Jul-2025 ARRL: News item and [&hellip;]<\/p>\n","protected":false},"author":20368,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[27],"tags":[],"class_list":["post-41236","post","type-post","status-publish","format-standard","hentry","category-spectrum-forum-papers-consultations"],"_links":{"self":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts\/41236","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/users\/20368"}],"replies":[{"embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/comments?post=41236"}],"version-history":[{"count":20,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts\/41236\/revisions"}],"predecessor-version":[{"id":47646,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts\/41236\/revisions\/47646"}],"wp:attachment":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/media?parent=41236"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/categories?post=41236"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/tags?post=41236"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}