{"id":49864,"date":"2021-08-01T07:55:10","date_gmt":"2021-08-01T11:55:10","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=49864"},"modified":"2021-08-01T07:55:10","modified_gmt":"2021-08-01T11:55:10","slug":"bob-colegrove-on-the-joys-and-challenges-of-tuning-analog-radios","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2021\/08\/bob-colegrove-on-the-joys-and-challenges-of-tuning-analog-radios\/","title":{"rendered":"Bob Colegrove on &#8220;The Joys and Challenges of Tuning Analog Radios&#8221;"},"content":{"rendered":"<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/07\/Radio-Dial-e1530836181998.jpg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-33104\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2018\/07\/Radio-Dial-e1530836181998.jpg\" alt=\"\" width=\"800\" height=\"530\" \/><\/a>Many thanks to <em>SWLing Post<\/em> contributor, Bob Colegrove, who recently shared this excellent article and has kindly allowed me to share it here in the the <em>Post<\/em>. Bob prefaced it by saying, &#8220;<em>Being a retired technical writer, I started the attached article some time ago for my own amusement, but it quickly got out of hand.<\/em>&#8221;<\/p>\n<p>&#8220;Got out of hand&#8221; in a very good way, Bob!<\/p>\n<div id=\"attachment_49866\" style=\"width: 853px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-49866\" class=\"wp-image-49866 size-full\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1.jpeg\" alt=\"\" width=\"843\" height=\"647\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1.jpeg 843w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1-300x230.jpeg 300w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1-768x589.jpeg 768w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Bob-Colegrove-Book-1-624x479.jpeg 624w\" sizes=\"auto, (max-width: 843px) 100vw, 843px\" \/><\/a><p id=\"caption-attachment-49866\" class=\"wp-caption-text\">An excerpt from Bob&#8217;s article.<\/p><\/div>\n<p>I love how this piece takes us through receiver history and explains, in detail, the mechanics and innovations. It&#8217;s also a very accessible piece that both the beginner and seasoned radio enthusiast can appreciate.<\/p>\n<p>But don&#8217;t take my word for it, download it and enjoy!<\/p>\n<p style=\"text-align: center;\"><strong><a href=\"https:\/\/drive.google.com\/file\/d\/1QpsnVZoIx0WZYqWHiVsQWWDgv3l3E1t4\/view?usp=sharing\" target=\"_blank\" rel=\"noopener\">Click here to download <em>The Joys and Challenges of Tuning Analog Radios<\/em> as a PDF.<\/a><\/strong><\/p>\n<p>Thank you again, Bob. This is a most enjoyable and informative read! This was obviously a labor of love. Thanks for sharing it with our radio community!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Many thanks to SWLing Post contributor, Bob Colegrove, who recently shared this excellent article and has kindly allowed me to share it here in the the Post. Bob prefaced it by saying, &#8220;Being a retired technical writer, I started the attached article some time ago for my own amusement, but it quickly got out of [&hellip;]<\/p>\n","protected":false},"author":15,"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":[251,3,305,288,26,43,4796],"tags":[680,464,9388,1146,7988,1345,4091,1302,681,4394],"class_list":["post-49864","post","type-post","status-publish","format-standard","hentry","category-books","category-news","category-nostalgia","category-radio-history","category-radios","category-shortwave-radio","category-vintage-radio","tag-analog-radio","tag-antique-radio","tag-articles","tag-boat-anchors","tag-bob-colegrove","tag-ebooks","tag-radio-history","tag-radio-nostalgia","tag-vintage-radio","tag-vintage-radios"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-cYg","jetpack-related-posts":[{"id":51812,"url":"https:\/\/swling.com\/blog\/2022\/02\/guest-post-control-of-electromagnetic-radiation-conelrad\/","url_meta":{"origin":49864,"position":0},"title":"Guest Post: Control of Electromagnetic Radiation (CONELRAD)","author":"Thomas","date":"February 8, 2022","format":false,"excerpt":"Many thanks to SWLing Post contributor,\u00a0Bob Colegrove, who shares the following guest post: Control of Electromagnetic Radiation (CONELRAD) As recalled by Bob Colegrove In his comment on my recent posting, Tinkering with History, Mario noted the dial on the featured radio, the General Electric P755A, sported two small triangles, one\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\/2022\/02\/Fig-1-e1644317508418.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/02\/Fig-1-e1644317508418.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/02\/Fig-1-e1644317508418.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/02\/Fig-1-e1644317508418.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/02\/Fig-1-e1644317508418.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":56447,"url":"https:\/\/swling.com\/blog\/2023\/04\/bobs-bespoke-rack-of-radios\/","url_meta":{"origin":49864,"position":1},"title":"Bob&#8217;s Bespoke &#8220;Rack of Radios&#8221;","author":"Thomas","date":"April 24, 2023","format":false,"excerpt":"Many thanks to SWLing Post contributor, Bob Colegrove, who shares the following: A Rack of Radios by Bob Colegrove You simply cannot have enough radios \u2013 a principle I learned a long time ago.\u00a0 The difficulty occurs when it comes to storing them and yet having them at the ready\u2026","rel":"","context":"In &quot;Accessories&quot;","block_context":{"text":"Accessories","link":"https:\/\/swling.com\/blog\/category\/accessories\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/04\/image1-1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/04\/image1-1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/04\/image1-1.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/04\/image1-1.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2023\/04\/image1-1.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":60370,"url":"https:\/\/swling.com\/blog\/2024\/08\/a-band-aid-for-the-xhdata-d-220\/","url_meta":{"origin":49864,"position":2},"title":"A Band Aid for the XHDATA D-220","author":"Thomas","date":"August 11, 2024","format":false,"excerpt":"Many thanks to\u00a0SWLing Post\u00a0contributor, Bob Colegrove, who shares the following guest post: A Band Aid for the XHDATA D-220 By Bob Colegrove In the olden days of analog radios, we would have generated a graph plotting frequency against a 0 to 100 linear bandspread scale. That permitted determination of a\u2026","rel":"","context":"In &quot;Guest Posts&quot;","block_context":{"text":"Guest Posts","link":"https:\/\/swling.com\/blog\/category\/guest-posts\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/08\/Fig-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/08\/Fig-1.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/08\/Fig-1.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/08\/Fig-1.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/08\/Fig-1.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":48403,"url":"https:\/\/swling.com\/blog\/2021\/04\/am-radio-history-80th-anniversary-of-the-havana-treaty\/","url_meta":{"origin":49864,"position":3},"title":"AM Radio History: 80th Anniversary of the \u201cHavana Treaty,\u201d","author":"Thomas","date":"April 4, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Bob Colegrove, who writes: Hi Thomas, I came across this article on Wikipedia. It is a few days late, but thought it might be of interest to others. The link is https:\/\/en.wikipedia.org\/wiki\/North_American_Regional_Broadcasting_Agreement. Briefly, this past Monday, was the 80th anniversary of the implementation of\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\/2014\/05\/philco38-4_dial_1.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/05\/philco38-4_dial_1.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/05\/philco38-4_dial_1.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":61368,"url":"https:\/\/swling.com\/blog\/2024\/12\/bobs-1968-radio-tirana-qsl-card\/","url_meta":{"origin":49864,"position":4},"title":"Bob&#8217;s 1968 Radio Tirana QSL Card","author":"Thomas","date":"December 12, 2024","format":false,"excerpt":"Many thanks to SWLing Post contributor Bob Colegrove, who writes: Kudos to Don Moore for his excellently crafted article on Albanian radio. [...]Perhaps some might be interested to see a 1968 QSL from R. Tirana. Regards, Bob Colegrove Thank you for sharing this excellent Radio Tirana QSL card, Bob!","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\/2024\/12\/R-Tirana-Inside.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/12\/R-Tirana-Inside.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/12\/R-Tirana-Inside.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/12\/R-Tirana-Inside.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2024\/12\/R-Tirana-Inside.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":61740,"url":"https:\/\/swling.com\/blog\/2025\/01\/the-curious-case-of-the-nibi-nibi-islands\/","url_meta":{"origin":49864,"position":5},"title":"Bob&#8217;s Radio Corner: The Curious Case of the Nibi-Nibi Islands","author":"Thomas","date":"January 18, 2025","format":false,"excerpt":"Many thanks to SWLing Post contributor Bob Colegrove, who writes: Hi Thomas, No mention of UTC or frequency in the attached. Made my day, but some folks apparently were not amused. Source was \"Short-Wave Report\" by Hank Bennett, Popular Electronics, Ziff-Davis Publishing Co., New York, p. 86, March 1959. Regards,\u2026","rel":"","context":"In &quot;Funny&quot;","block_context":{"text":"Funny","link":"https:\/\/swling.com\/blog\/category\/funny\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/01\/Globe-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/01\/Globe-1.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/01\/Globe-1.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/01\/Globe-1.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/01\/Globe-1.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/49864","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\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=49864"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/49864\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=49864"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=49864"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=49864"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}