{"id":57947,"date":"2023-10-14T05:00:41","date_gmt":"2023-10-14T09:00:41","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=57947"},"modified":"2023-10-13T06:41:59","modified_gmt":"2023-10-13T10:41:59","slug":"today-is-the-day-the-great-medium-wave-grey-line-challenge","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2023\/10\/today-is-the-day-the-great-medium-wave-grey-line-challenge\/","title":{"rendered":"Today is the day . . . The Great Medium Wave Grey Line Challenge!"},"content":{"rendered":"<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/photos-for-SWLing-blog-002-001-scaled.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-large wp-image-57949\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/photos-for-SWLing-blog-002-001-1024x683.jpg\" alt=\"\" width=\"625\" height=\"417\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/photos-for-SWLing-blog-002-001-1024x683.jpg 1024w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/photos-for-SWLing-blog-002-001-300x200.jpg 300w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/photos-for-SWLing-blog-002-001-768x512.jpg 768w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/photos-for-SWLing-blog-002-001-1536x1024.jpg 1536w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/photos-for-SWLing-blog-002-001-2048x1365.jpg 2048w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/photos-for-SWLing-blog-002-001-624x416.jpg 624w\" sizes=\"auto, (max-width: 625px) 100vw, 625px\" \/><\/a><\/p>\n<p>It&#8217;s time to have some fun for a couple of hours chasing MW DX along the grey line. <strong>Please note: an important change has been made to the rules: <span style=\"text-decoration: underline\">you can choose <em>either<\/em> Civil Twilight at sunrise or Civil Twilight at sunset<\/span> . . . but not both.<\/strong><\/p>\n<p>Here are the rules:<\/p>\n<ol>\n<li>Frequency range is the medium wave band: 520-1710 kHz<\/li>\n<li>From one hour <em>before<\/em> Civil Twilight <strong><u>your local time<\/u><\/strong> <strong>TODAY<em>, <\/em><\/strong><em><strong>Saturday, October 14<\/strong><\/em>, to one hour <em>after<\/em> Civil Twilight <em>at your location<\/em> . . . at either sunrise or sunset<\/li>\n<li>Any radio with any antenna, but must be the radio at your location (no using remote internet radios)<\/li>\n<li>The listener must hear the signal in real time<\/li>\n<li>The stations must be ID\u2019ed by listening to the signal.<\/li>\n<li>Your report should include:\n<ul>\n<li>Your name (or Internet handle)<\/li>\n<li>Your receiver and antenna (stay with the same setup from beginning to end; if you use multiple setups, provide a separate report for each).<\/li>\n<li>Your location<\/li>\n<li>The time, the frequency, and the ID of each station heard<\/li>\n<li>The total mileage of your top five most distant stations.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<p>A final point: this is <u>not<\/u> a contest; it is a challenge. The reward for every participant will be fun and fellowship.<\/p>\n<p>You can find when <span style=\"text-decoration: underline\">Civil Twilight<\/span> begins at your location by visiting <a href=\"http:\/\/www.wunderground.com\" target=\"_blank\" rel=\"noopener\">www.wunderground.com<\/a>\u00a0 . Enter your location, click on \u201cFull Forecast\u201d then scroll down to the \u201cAstronomy\u201d section.<\/p>\n<p>And when you have completed the Great Medium\u00a0 Wave Grey Line Challenge, please post your results in the comments below.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>It&#8217;s time to have some fun for a couple of hours chasing MW DX along the grey line. Please note: an important change has been made to the rules: you can choose either Civil Twilight at sunrise or Civil Twilight at sunset . . . but not both. Here are the rules: Frequency range is [&hellip;]<\/p>\n","protected":false},"author":114,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[3],"tags":[9323,10334],"class_list":["post-57947","post","type-post","status-publish","format-standard","hentry","category-news","tag-jock-elliott-kb2gom","tag-the-great-medium-wave-grey-line-challenge"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-f4D","jetpack-related-posts":[{"id":57987,"url":"https:\/\/swling.com\/blog\/2023\/10\/important-change-to-the-great-medium-wave-grey-line-challenge\/","url_meta":{"origin":57947,"position":0},"title":"Important change to The Great Medium Wave Grey Line Challenge","author":"Jock Elliott","date":"October 13, 2023","format":false,"excerpt":"by Jock Elliott, KB2GOM On the very helpful advice of 13dka, who noted that \"this should be optional \u2013 the grayline happens twice a day, with the morning grayline favoring westerly propagation paths and the evening grayline the east,\" participants in the challenge can now choose either the grey line\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/09\/Screenshot-2023-09-24-120532.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/09\/Screenshot-2023-09-24-120532.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/09\/Screenshot-2023-09-24-120532.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":57831,"url":"https:\/\/swling.com\/blog\/2023\/09\/the-great-medium-wave-grey-line-challenge\/","url_meta":{"origin":57947,"position":1},"title":"The Great Medium Wave Grey Line Challenge","author":"Jock Elliott","date":"September 27, 2023","format":false,"excerpt":"By Jock Elliott, KB2GOM According to https:\/\/dx.qsl.net\/propagation\/greyline.html: (the image above comes from them) The \"grey line\" is a band around the Earth that separates daylight from darkness.\u00a0 Propagation along the grey line is very efficient.\u00a0 One major reason for this is that the D layer, The \"grey line\" is a\u2026","rel":"","context":"In &quot;AM&quot;","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/09\/Screenshot-2023-09-24-120532.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/09\/Screenshot-2023-09-24-120532.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/09\/Screenshot-2023-09-24-120532.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":57906,"url":"https:\/\/swling.com\/blog\/2023\/10\/next-saturday-the-great-medium-wave-grey-line-challenge\/","url_meta":{"origin":57947,"position":2},"title":"Next Saturday: The Great Medium Wave Grey Line Challenge!","author":"Jock Elliott","date":"October 9, 2023","format":false,"excerpt":"Let\u2019s have some fun for a couple of hours chasing MW DX along the grey line. Here are the rules: Frequency range is the medium wave band: 520-1710 kHz From one hour before Civil Twilight your local time on Saturday, October 14, to one hour after Civil Twilight at your\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/CCrane-skywave-SSB-and-headphones-002-001-1024x768.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/CCrane-skywave-SSB-and-headphones-002-001-1024x768.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/10\/CCrane-skywave-SSB-and-headphones-002-001-1024x768.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":56008,"url":"https:\/\/swling.com\/blog\/2023\/03\/the-great-medium-wave-daylight-dx-challenge\/","url_meta":{"origin":57947,"position":3},"title":"The Great Medium Wave Daylight DX Challenge","author":"Jock Elliott","date":"March 6, 2023","format":false,"excerpt":"By Jock Elliott, KB2GOM First a word of acknowledgement and thanks: it was Chuck Rippel who said (in part) -- in response to this post\u00a0-- \u201cWe could make this interesting by restricting listening to the period 10AM \u2013 2PM maybe 3PM.\u201d And that got me to thinking that maybe a\u2026","rel":"","context":"In &quot;Mediumwave&quot;","block_context":{"text":"Mediumwave","link":"https:\/\/swling.com\/blog\/category\/mediumwave\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/03\/satellit-800.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/03\/satellit-800.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/03\/satellit-800.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/03\/satellit-800.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":56044,"url":"https:\/\/swling.com\/blog\/2023\/03\/today-is-the-day-the-great-medium-wave-daylight-dx-challenge\/","url_meta":{"origin":57947,"position":4},"title":"Saturday, March 12, 2023: The Great Medium Wave Daylight DX Challenge","author":"Jock Elliott","date":"March 11, 2023","format":false,"excerpt":"[If you haven't already, please check out this previous post about The Great Medium Wave Daylight DX Challenge.] Here are the rules: Frequency range is the medium wave band: 520-1710 kHz 10 am to 2 pm your local time today (Saturday, March 11, 2023). . . report the results in\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/02\/Chuck-Rippel-GE-Superadio-II.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/02\/Chuck-Rippel-GE-Superadio-II.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/02\/Chuck-Rippel-GE-Superadio-II.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/02\/Chuck-Rippel-GE-Superadio-II.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/02\/Chuck-Rippel-GE-Superadio-II.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":56038,"url":"https:\/\/swling.com\/blog\/2023\/03\/gentle-reminder-the-great-medium-wave-daylight-dx-challenge-is-tomorrow\/","url_meta":{"origin":57947,"position":5},"title":"Gentle reminder: The Great Medium Wave Daylight DX Challenge is tomorrow!","author":"Jock Elliott","date":"March 10, 2023","format":false,"excerpt":"Here are the rules: Frequency range is the medium wave band: 520-1710 kHz 10 am to 2 pm your local time on Saturday, March 11, 2023 . Any radio with any antenna, but must be the radio at your location (no using remote internet radios) The listener must hear the\u2026","rel":"","context":"In &quot;AM&quot;","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/03\/satellit-800.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/03\/satellit-800.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/03\/satellit-800.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/03\/satellit-800.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/57947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/users\/114"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=57947"}],"version-history":[{"count":6,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/57947\/revisions"}],"predecessor-version":[{"id":57990,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/57947\/revisions\/57990"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=57947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=57947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=57947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}