{"id":20250,"date":"2016-08-01T06:42:20","date_gmt":"2016-08-01T10:42:20","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=20250"},"modified":"2016-08-01T07:51:42","modified_gmt":"2016-08-01T11:51:42","slug":"turn-your-elad-fdm-duo-into-a-portable-receiver-with-a-200-metre-longwire","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2016\/08\/turn-your-elad-fdm-duo-into-a-portable-receiver-with-a-200-metre-longwire\/","title":{"rendered":"Turn your Elad FDM DUO into a portable receiver, with a 200 metre longwire"},"content":{"rendered":"

As some of the subscribers to Oxford Shortwave Log<\/a> \u00a0will know, I’ve been talking about building a battery pack for my Elad FDM DUO to take it out on a DXpedition. Finally, I found the time\u00a0to quickly do just that with some parts that cost less than \u00a310 – as the video below demonstrates in more detail.\u00a0The FDM DUO input voltage is stated as 13.8V and although 12V would probably have been sufficient, a couple of very cheap battery cases later,\u00a09 x 1.5V ‘C’ cells and about 20 minutes of somewhat unpractised soldering did the trick. I have also put together a 200 metre longwire antenna, deployable from a large spool, with a termination connector to add resistor grounding for a Beverage Antenna configuration, should I wish to do so in the future. \u00a0I used two spools of 100 metre equipment cable, soldered together and protected with heat-shrink.<\/p>\n

http:\/\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/How-to-turn-your-Elad-FDM-DUO-into-a-portable2C-with-a-200-metre-longwire-antenna.mp4<\/a><\/video><\/div>\n

Direct link to Oxford Shortwave Log channel<\/a><\/p>\n

Regular viewers of my youtube channel will know that I spend much of my shortwave listening time out in an Oxfordshire wood where QRM is negligable and Tropical Band stations can be heard with, at times, unprecidented signal-to-noise. This is the first time I’ve used a longwire greater than 100 metres in length, however, to be resonant at two wavelengths for 90 metres and 3 wavelengths for 60 metres was the objective. I hope the already fine Tropical Band listening to be had out in the Oxfordshire countryside will improve further.<\/p>\n

Clint Gouveia\u00a0is the author of this post and a regular contributor to the SWLing Post. Clint actively publishes videos of his shortwave radio excursions on his YouTube channel:\u00a0Oxford Shortwave Log<\/a>. Clint is based in Oxfordshire, England.<\/i><\/div>\n","protected":false},"excerpt":{"rendered":"

As some of the subscribers to Oxford Shortwave Log \u00a0will know, I’ve been talking about building a battery pack for my Elad FDM DUO to take it out on a DXpedition. Finally, I found the time\u00a0to quickly do just that with some parts that cost less than \u00a310 – as the video below demonstrates in […]<\/p>\n","protected":false},"author":67,"featured_media":0,"comment_status":"open","ping_status":"open","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":[43],"tags":[2224,2455,2774,4328,34,4082,4087],"class_list":["post-20250","post","type-post","status-publish","format-standard","hentry","category-shortwave-radio","tag-dxpedition","tag-elad-fdm-duo","tag-fdm-duo","tag-oxford-shortwave-log","tag-shortwave","tag-shortwave-radio","tag-software-defined-radio"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-5gC","jetpack-related-posts":[{"id":20822,"url":"https:\/\/swling.com\/blog\/2016\/08\/radio-fana-6110-khz-ethiopia-excellent-snr-with-elad-fdm-duo\/","url_meta":{"origin":20250,"position":0},"title":"Radio Fana 6110 kHz Ethiopia; excellent SNR with Elad FDM DUO","author":"Clint Gouveia","date":"August 26, 2016","format":false,"excerpt":"The Elad FDM DUO makes for\u00a0a fantastic receiver, in both standalone mode and via the FDM-SW2 software. Thus far it has been demonstrating this by outperforming the Sony ICF-2001D in many of my reception tests\u00a0using an\u00a0experimental longwire antenna. Bear in mind that whilst this might not be such a surprise,\u2026","rel":"","context":"In "AM"","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"Fanaza","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/Fanaza.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/Fanaza.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/Fanaza.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/Fanaza.jpg?resize=700%2C400 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/Fanaza.jpg?resize=1050%2C600 3x"},"classes":[]},{"id":20626,"url":"https:\/\/swling.com\/blog\/2016\/08\/dxpedition-first-test-of-deployable-200-metre-longwire-antenna-by-oxford-shortwave-log\/","url_meta":{"origin":20250,"position":1},"title":"DX’pedition: first test of deployable 200 metre longwire antenna by Oxford Shortwave Log","author":"Clint Gouveia","date":"August 15, 2016","format":false,"excerpt":"A view looking toward \u00a0Oxford Shortwave Log\u00a0DX'pedition territory; a wood in rural Oxfordshire Regular viewers of my youtube channel will know that I spend much of my shortwave listening time out in an Oxfordshire wood where QRM is negligable and Tropical Band stations can be heard with, at times, unprecidented\u2026","rel":"","context":"In "Antennas"","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"","width":0,"height":0},"classes":[]},{"id":20733,"url":"https:\/\/swling.com\/blog\/2016\/08\/200-metre-longwire-radio-verdad-4054-9-khz-guatemala-unprecedented-reception-in-oxford-uk\/","url_meta":{"origin":20250,"position":2},"title":"200 metre longwire: Radio Verdad 4054.9 kHz, Guatemala, unprecedented reception in Oxford, UK","author":"Clint Gouveia","date":"August 22, 2016","format":false,"excerpt":"Radio Verdad, Chiquimula,\u00a0Guatemala is quite a regular catch at home, however,\u00a0their modulation is nearly always weak as the carrier\u00a0struggles to lift above the ubiquitous blanket of local QRM. Another issue with hearing\u00a0this station is the\u00a0digital utility\u00a0signal just above 4055 kHz, thus requiring LSB reception to reject the adjacent noise. This\u2026","rel":"","context":"In "Antennas"","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"verdad","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/verdad.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/verdad.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/verdad.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/08\/verdad.jpg?resize=700%2C400 2x"},"classes":[]},{"id":21227,"url":"https:\/\/swling.com\/blog\/2016\/09\/south-american-shortwave-catches-rarely-heard-in-europe\/","url_meta":{"origin":20250,"position":3},"title":"South American shortwave catches, rarely heard in Europe","author":"Clint Gouveia","date":"September 12, 2016","format":false,"excerpt":"Hi there, I thought I would share some DX catches,\u00a0all of which are rarely reported in Europe and yet I was fortunate enough to catch\u00a0in Oxford UK, using a couple of\u00a0different set-ups. The first is Radio Chaski Red Integridad from Urubamba Cusco, Peru, heard using an Elad FDM DUO and\u2026","rel":"","context":"In "Antennas"","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"RCRI","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/09\/RCRI-300x158.jpg?resize=350%2C200","width":350,"height":200},"classes":[]},{"id":22638,"url":"https:\/\/swling.com\/blog\/2016\/12\/oxford-shortwave-log-transatlantic-mw-dx-catches-with-200-metre-beverage-part-1\/","url_meta":{"origin":20250,"position":4},"title":"Oxford Shortwave Log: transatlantic MW DX catches with 200 metre Beverage – part 1","author":"Clint Gouveia","date":"December 5, 2016","format":false,"excerpt":"Hi there, a few weeks ago I posted a couple of medium wave DX catches with the Elad FDM DUO and newly constructed 200 metre Beverage antenna. Since then (and following my trip to Brazil) I have uploaded several more catches, some of which I would like to share with\u2026","rel":"","context":"In "AM"","block_context":{"text":"AM","link":"https:\/\/swling.com\/blog\/category\/am\/"},"img":{"alt_text":"worspectrum","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/WORspectrum.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/WORspectrum.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/WORspectrum.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/12\/WORspectrum.jpg?resize=700%2C400 2x"},"classes":[]},{"id":21773,"url":"https:\/\/swling.com\/blog\/2016\/10\/oxford-shortwave-log-200-metre-beverage-antenna-initial-reception-tests\/","url_meta":{"origin":20250,"position":5},"title":"Oxford Shortwave Log: 200 metre Beverage antenna – initial reception tests","author":"Clint Gouveia","date":"October 13, 2016","format":false,"excerpt":"Hi there, I have finally deployed the Medium Wave Circle-design 200 metre Beverage antenna (schematic diagram above) at the woods I use in Oxford, UK. It was terminated at the 'front end' with a 650 Ohm resistor into a 1 metre-long, permanent copper earthing rod that I had previously driven\u2026","rel":"","context":"In "Antennas"","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"beverage3","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/10\/beverage3.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/10\/beverage3.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/10\/beverage3.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/10\/beverage3.jpg?resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/20250","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\/67"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=20250"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/20250\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=20250"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=20250"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=20250"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}