{"id":11809,"date":"2015-01-22T11:36:38","date_gmt":"2015-01-22T11:36:38","guid":{"rendered":"https:\/\/rsgb.org\/main\/?p=11809"},"modified":"2022-05-19T10:49:35","modified_gmt":"2022-05-19T09:49:35","slug":"radcom-february-2015-vol-91-2","status":"publish","type":"post","link":"https:\/\/rsgb.org\/main\/blog\/publications\/radcom\/2015\/01\/22\/radcom-february-2015-vol-91-2\/","title":{"rendered":"RadCom February 2015, Vol. 91, No. 2"},"content":{"rendered":"<blockquote>\n<h4><strong>THIS EDITION IS TEMPORARILY UNAVAILABLE ONLINE<\/strong><\/h4>\n<h4>We apologise for any disappointment<\/h4>\n<h4>This edition is currently being converted to our HTML5 online viewer, which will bring enhanced readability, download speed and picture quality<\/h4>\n<\/blockquote>\n<p><a href=\"#5539\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-6156 alignright\" title=\"Click the cover to read RadCom online\" src=\"https:\/\/thersgb.org\/images\/radcom\/covers\/2015\/February-2015.png\" alt=\"Cover of February 2015 RadCom - Cover image: Gerald Davison, MW0WML activating Snowdon for Summits on the Air. Photo courtesy of MW0WML\" width=\"200\" height=\"283\" \/><\/a><\/p>\n<h2>News and Reports<\/h2>\n<p><strong>6 RSGB Matters<\/strong><br \/>\nNews on the 2015 Band Plan, a new RSGB Director, <em>RadCom<\/em> online, ex-RadCom Technical Editor and RSGB Awards Manager go SK, new RSGB UK Events Planner online, QSL Matters, New Joiners, Rejoiners and Congratulations<br \/>\n<strong>11 News<\/strong><br \/>\nAll the amateur radio news<br \/>\n<strong>12 New Products<\/strong><br \/>\nExciting new products we\u2019ve heard about this month<br \/>\n<strong>16 Honour Roll<\/strong><br \/>\nThe RSGB salutes all Members who have been with the Society for 50 years or more<br \/>\n<strong>36 Band Plan 2015<\/strong><br \/>\nThe latest, fully-updated Band Plan from 156kHz to 250GHz, including the new 146MHz band and other changes<br \/>\n<strong>84 Around Your Region<\/strong><br \/>\nClub news and planned events around the country<\/p>\n<h2>Read this edition online<\/h2>\n<p>You will need your RSGB Membership Services login, follow the link below or click the cover image to your right.<\/p>\n<ul>\n<li><a href=\"#5539\" target=\"_blank\" rel=\"noopener\">RadCom February 2015, Vol. 91, No. 2<\/a><\/li>\n<\/ul>\n<h2>Features<\/h2>\n<p><strong>14 SOTA cover story<\/strong><br \/>\nGerald Davidson, MW0WML describes discovering the Summits on the Air programme and how it spurred him to obtain his Foundation, Intermediate and then Full licence\u2014and become a Mountain Goat<br \/>\n<strong>24 Getting Started In&#8230; Contesting<\/strong><br \/>\nThere is an in-born human trait to compete, writes Don Beattie, G3BJ, and amateur radio contesting can build strong bonds and camaraderie\u2014learn how to join in and excel at this competitive aspect of amateur radio<br \/>\n<strong>83 British Science Week<\/strong><br \/>\nHeather Parsons shares inspirational stories from previous events and asks if you\u2019re getting involved this March<\/p>\n<h2>Reviews<\/h2>\n<p><strong>31 CS-7000 UHF DMR handheld<\/strong><br \/>\nMike Richards, G4WNC explores the Digital Mobile Radio standard while reviewing this affordable digital handheld for the system<br \/>\n<strong>43 miniVNA Tiny<\/strong><br \/>\nA pocket-size vector network analyser that covers 1MHz-3GHz and works well, writes Steve Nichols, G0KYA<br \/>\n<strong>56 Nitecore\u00ae D2 digicharger<\/strong><br \/>\nAndy Talbot, G4JNT is impressed by this intelligent, multi-purpose charger that can cope with different chemistries, sizes and voltages automatically<br \/>\n<strong>78 Book Review<\/strong><br \/>\nGiles Read, G1MFG looks at <em>Hamsat<\/em> and the 2014 <em>RadCom<\/em> Archive<\/p>\n<h2>Technical Features<\/h2>\n<p><strong>18 Homebrew<\/strong><br \/>\nEamon Skelton, EI9GQ starts work on a high quality single band 10m radio suitable for direct use or as the IF for a transverter. Note that there is a <a href=\"https:\/\/rsgb.org\/main\/blog\/publications\/radcom\/2015\/01\/22\/homebrew-february-2015-errata\/\">correction to Figure 4 here.<\/a><br \/>\n<strong>22 Design Notes<\/strong><br \/>\nMake your own \u2018mains\u2019, surprisingly fast 74VHC CMOS logic and a look at linear phase filters with Andy Talbot, G4JNT<br \/>\n<strong>44 Raspberry Pi in the Shack<\/strong><br \/>\nIn the first of a short series, Mike Richards, G4WNC explains how the Raspberry Pi computer can work as a SDR receiver server<br \/>\n<strong>48 Moving On<\/strong><br \/>\nJohn Welsh, G0NVZ looks at how the transistor works<br \/>\n<strong>70 Data<\/strong><br \/>\nAn intelligent COM port for PTT, the latest Opera update and the possibilities of spread spectrum on the new 146MHz band considered by Andy Talbot, G4JNT<br \/>\n<strong>72 Circulators<\/strong><br \/>\nMark Atherton, ZL3JVX examines a very strange technology that uses magnets and odd-shaped bits of metal to form one-way systems for RF signals<br \/>\n<strong>80 EMC<\/strong><br \/>\nLatest news on electromagnetic compatibility issues including plasma TVs, wind turbines and smart metering with Dr David Lauder, G0SNO<\/p>\n<h2>Regulars<\/h2>\n<p>91 Advertisers&#8217; index<br \/>\n54 Antennas, Peter Dodd, G3LDO<br \/>\n68 GHz, Dr John Worsnop, G4BAO<br \/>\n64 HF, Martin Atherton, G3ZAY<br \/>\n63 LF, Dave Pick, G3YXM<br \/>\n95 Propagation, Gwyn Williams, G4KFH<br \/>\n60 QRP, Rev. George Dobbs, G3RJV<br \/>\n92 Members\u2019 Ads, Rallies and Events, Silent Keys and Special Event stations<br \/>\n76 Sport Radio, Steve White, G3ZVW<br \/>\n96 The Last Word<br \/>\n66 VHF\/UHF, Richard Staples, G4HGI<\/p>\n","protected":false},"excerpt":{"rendered":"<p>THIS EDITION IS TEMPORARILY UNAVAILABLE ONLINE We apologise for any disappointment This edition is currently being converted to our HTML5 online viewer, which will bring enhanced readability, download speed and picture quality News and Reports 6 RSGB Matters News on the 2015 Band Plan, a new RSGB Director, RadCom online, ex-RadCom Technical Editor and RSGB [&hellip;]<\/p>\n","protected":false},"author":41,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[274,30],"tags":[],"class_list":["post-11809","post","type-post","status-publish","format-standard","hentry","category-front-page-news","category-radcom"],"_links":{"self":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts\/11809","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\/41"}],"replies":[{"embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/comments?post=11809"}],"version-history":[{"count":0,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/posts\/11809\/revisions"}],"wp:attachment":[{"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/media?parent=11809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/categories?post=11809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rsgb.org\/main\/wp-json\/wp\/v2\/tags?post=11809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}