{"id":48265,"date":"2021-03-26T08:50:07","date_gmt":"2021-03-26T12:50:07","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=48265"},"modified":"2021-03-26T08:50:21","modified_gmt":"2021-03-26T12:50:21","slug":"radio-waves-friedrichshafen-cancelled-coast-guard-seeks-rare-diode-kindred-spirits-in-dxing-and-drm-pitch-for-indias-fm-band","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2021\/03\/radio-waves-friedrichshafen-cancelled-coast-guard-seeks-rare-diode-kindred-spirits-in-dxing-and-drm-pitch-for-indias-fm-band\/","title":{"rendered":"Radio Waves: Friedrichshafen Cancelled, Coast Guard Seeks Rare Diode, Kindred Spirits in DXing, and DRM Pitch for India’s FM Band"},"content":{"rendered":"

\"\"<\/a><\/p>\n

Radio Waves:\u00a0 Stories Making Waves in the World of Radio<\/h2>\n

Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest\u00a0SWLing Post<\/em>\u00a0readers.\u00a0 To that end:\u00a0Welcome to the\u00a0SWLing Post\u2019s<\/em> Radio Waves<\/em>, a collection of links to interesting stories making waves in the world of radio.\u00a0<\/strong>Enjoy!<\/strong><\/p>\n

Many thanks to\u00a0SWLing Post<\/em> contributors Dennis Dura, Ron Chester, and Mangosman for the following tips:<\/p>\n

\n

Ham Radio Verbindung 2021 kommt nicht zustande\/Ham Radio convention 2021 has been cancelled (Messe Friedrichshafen)<\/a><\/h2>\n

[Note that the following is a Google translation of the original piece in German<\/a>]<\/p>\n

Ham Radio cannot take place this year either – other trade fair events remain on course<\/span><\/p>\n

Due to the current corona developments, Messe Friedrichshafen cannot hold the international amateur radio exhibition Ham Radio in the planned period from June 25 to 27, 2021. Instead, the industry meeting will take place from June 24 to 26, 2022.<\/span><\/p>\n

\u201cThe decision was not an easy one for us, but a trade fair like Ham Radio lives from its high level of internationality. Due to the current uncertainties in the travel sector, implementation is currently not feasible, \u201dexplains Klaus Wellmann, Managing Director of Messe Friedrichshafen. All other trade fair events in the second quarter of 2021 and beyond should take place as planned at the present time. \u201cA large percentage of our customers from these industries are still on board at the 2021 events. Together we hope that the immunization of society continues to gain momentum and that we can carry out the events with appropriate protection and hygiene concepts. “<\/span><\/p>\n

Further information at: www.messe-friedrichshafen.de<\/a> and http:\/\/www.hamradio-friedrichshafen.de\/<\/a>.<\/span><\/p><\/blockquote>\n

Rare Diode Threatens Coast Guard\u2019s Arctic Ambitions (Hackaday)<\/a><\/h2>\n

The United States Coast Guard heavy icebreaker Polar Star is literally a one-of-a-kind ship. After its sister Polar Sea was deactivated in 2010 it became the most powerful icebreaker in the fleet, and one of only two US icebreakers capable of operating in the treacherous polar regions. The vessel is critical to protecting America\u2019s scientific and economic interests in the Arctic, but according to a recent article in Business Insider, the ship\u2019s age and scarcity of spare parts is making an already difficult mission even harder.<\/p>\n

In the article, Captain William Woityra specifically mentions that the ship\u2019s diesel-electric propulsion system is running on borrowed time as the diodes used in its AC\/DC rectifier are no longer manufactured. With none remaining in the Coast Guard\u2019s inventory, the crew has had to turn to eBay to source as many spares as possible. But once their hoard runs out, Captain Woityra fears his ship will be dead in the water[…<\/a>]<\/p><\/blockquote>\n

A toast to the fools standing high on broadcasting\u2019s hill (Doc Searls Weblog)<\/a><\/h2>\n

In Winter, the cap of dark on half the Earth is cocked to the north. So, as the planet spins, places farther north get more night in the winter. In McGrath, Alaska, at close to sixty-three degrees north, most of the day is dark. This would be discouraging to most people, but to Paul B. Walker it\u2019s a blessing. Because Paul is a DXer.<\/p>\n

In the radio world, DX stands for for distance, and\u00a0DXing<\/a>\u00a0is listening to distant radio stations. Thanks to that darkness, Paul listens to AM stations of all sizes, from Turkey to Tennessee, Thailand to Norway. And last night, New Zealand. Specifically,\u00a0NewsTalk ZB<\/a>\u2018s main AM signal at 1035 on the AM (what used to be the) dial. According to\u00a0distancecalculator.net<\/a>, the signal traveled 11886.34 km, or 7385.83 miles, across the face of the earth. In fact it flew much farther, since the signal needed to bounce up and down off the\u00a0E layer<\/a>\u00a0of the ionosphere and the surface of the ocean multiple times between Wellington and McGrath. While that distance is no big deal on shortwave (which bounces off a higher layer) and no deal at all on the Internet (where we are all\u00a0zero distance apart<\/a>), for a DXer that\u2019s like hauling in a fish the size of a boat.<\/p>\n

In this sense alone, Paul and I are kindred souls. As a boy and a young man, I was a devout DXer too. I logged thousands of AM and FM stations, from my homes in New Jersey and North Carolina. (Here is a collection<\/a>\u00a0of\u00a0QSL cards<\/a>\u00a0I got from stations to which I reported reception, in 1963, when I was a sophomore in high school.) More importantly, learning about all these distant stations sparked my interest in geography, electronics, geology, weather, astronomy, history and other adjacent fields. By the time I was a teen, I could draw all the states of the country, freehand, and name their capitals too. And that was on top of knowing on sight the likely purpose of every broadcast tower and antenna I saw.[…<\/a>]<\/p><\/blockquote>\n

DRM Makes Its Pitch for India\u2019s FM Band (Radio World)<\/a><\/h2>\n

In India, where regulators have been working toward recommending a standard to digitize the FM band, Digital Radio Mondiale is presenting its case.<\/p>\n

DRM has been conducting trials and demos since late February, when a digital radio transmission with three audio services and Journaline text information went live in Delhi alongside existing analog FM transmissions.<\/p>\n

It said it is also showing the possibility of extending a shared transmitter infrastructure by broadcasting up to six individual DRM signals or blocks, carrying up to 18 audio services plus 6 multimedia services, being broadcast from one FM transmitter and antenna. It said the number of individual DRM signals is only limited by the bandwidth of the transmitter. Each signal can have its own power level, and gaps in the spectrum are possible, as are individual SFN networks per DRM signal.<\/p>\n

\u201cThe transmission is part of an extensive trial and demonstration of DRM conducted by Prasar Bharati and its radio arm, All India Radio (AIR), with the help of the DRM Consortium and its local and international members,\u201d DRM stated in a press release. \u201cThe test was officially launched on Feb. 24 and 25 at the headquarters of All India Radio in New Delhi.\u201d<\/p>\n

The test was requested by regulator TRAI and the Ministry of Information & Broadcasting.<\/p>\n

DRM officials said a presentation to AIR\u2019s committee showed DRM in the FM band on various car radios including line-fit, aftermarket, standalone receivers, mobile phones and tablets. A head unit from Mobis, upgraded for FM via firmware, was installed in a Hyundai Verna. DRM said, \u201cThe reception was found to be excellent for over 15 km radius with just 100 W of DRM power in digital,\u201d including 5.1 surround sound test broadcasts on DRM.[…<\/a>]<\/p>\n

You might also check out the article HD Radio and Digital FM in India<\/a> at Radio World.<\/p><\/blockquote>\n

\n

Do you enjoy the SWLing Post?<\/em><\/strong><\/span><\/h1>\n

Please consider supporting us via\u00a0Patreon<\/span><\/a>\u00a0or our\u00a0Coffee<\/span>\u00a0Fund<\/span><\/a>! <\/em><\/strong><\/p>\n

Your support makes articles like this one possible. Thank you!<\/em><\/p>\n

\"\"<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Radio Waves:\u00a0 Stories Making Waves in the World of Radio Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest\u00a0SWLing Post\u00a0readers.\u00a0 To that end:\u00a0Welcome to the\u00a0SWLing Post\u2019s Radio Waves, a collection of links to interesting […]<\/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":[54,545,3,43],"tags":[9208,5875,980,9209,4083,3950,9150,3354,7539,9210],"class_list":["post-48265","post","type-post","status-publish","format-standard","hentry","category-drm","category-ham-radio","category-news","category-shortwave-radio","tag-coast-guard","tag-dennis-dura","tag-digital-radio-mondiale","tag-doc-searls","tag-drm","tag-friedrichshafen","tag-friedrichshafen-2021","tag-hackaday","tag-mangosman","tag-ron-chester"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-cyt","jetpack-related-posts":[{"id":47859,"url":"https:\/\/swling.com\/blog\/2021\/02\/radio-waves-australian-radio-stations-blocked-on-fb-boomer-radio-friedrichshafen-2021-maybe-a-go-and-ultra-low-radio-frequencies-reveal-universe-of-black-holes\/","url_meta":{"origin":48265,"position":0},"title":"Radio Waves: Australian Radio Stations Blocked on FB, Boomer Radio, Friedrichshafen 2021 Maybe a Go, and Ultra-Low Radio Frequencies Reveal Universe of Black Holes","author":"Thomas","date":"February 21, 2021","format":false,"excerpt":"Radio Waves:\u00a0 Stories Making Waves in the World of Radio Because I keep my ear to the waves, as well as receive many tips from others who do the same, I find myself privy to radio-related stories that might interest\u00a0SWLing Post\u00a0readers.\u00a0 To that end:\u00a0Welcome to the\u00a0SWLing Post\u2019s Radio Waves, a\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/JRC-Dial.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/JRC-Dial.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/JRC-Dial.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/JRC-Dial.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2017\/07\/JRC-Dial.jpg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":55959,"url":"https:\/\/swling.com\/blog\/2023\/02\/radio-waves-the-dlarc-nasa-citizen-science-popshopradio-drm-to-europe-and-afghan-radio-closures\/","url_meta":{"origin":48265,"position":1},"title":"Radio Waves: The DLARC, NASA Citizen Science, PopShopRadio DRM to Europe, Hackers Disrupt Russian Radio, and Afghan Radio Closures","author":"Thomas","date":"February 25, 2023","format":false,"excerpt":"Radio Waves:\u00a0 Stories Making Waves in the World of Radio Welcome to the\u00a0SWLing Post\u2019s Radio Waves, a collection of links to interesting stories making waves in the world of radio.\u00a0Enjoy! Many thanks to SWLing Post contributors Trevor Robbins and Dennis Dura for the following tips: Digital Library Of Amateur Radio\u2026","rel":"","context":"In "AM"","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\/2014\/10\/Shortwave-Radio-Astronomy-PARI.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/10\/Shortwave-Radio-Astronomy-PARI.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/10\/Shortwave-Radio-Astronomy-PARI.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/10\/Shortwave-Radio-Astronomy-PARI.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":57373,"url":"https:\/\/swling.com\/blog\/2023\/08\/radio-waves-drm-from-ascension-to-brazil-commercial-radio-boost-fm-hd-power-and-new-pakistan-drm-project\/","url_meta":{"origin":48265,"position":2},"title":"Radio Waves: DRM from Ascension to Brazil, Commercial Radio Boost, FM HD Power, and New Pakistan DRM Project,","author":"Thomas","date":"August 5, 2023","format":false,"excerpt":"Radio Waves:\u00a0 Stories Making Waves in the World of Radio Welcome to the\u00a0SWLing Post\u2019s Radio Waves, a collection of links to interesting stories making waves in the world of radio.\u00a0Enjoy! 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