{"id":11531,"date":"2014-12-04T07:59:49","date_gmt":"2014-12-04T11:59:49","guid":{"rendered":"http:\/\/swling.com\/blog\/?p=11531"},"modified":"2014-12-04T07:59:49","modified_gmt":"2014-12-04T11:59:49","slug":"elad-fdm-s2-erics-method-of-mitigating-strong-local-signals","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2014\/12\/elad-fdm-s2-erics-method-of-mitigating-strong-local-signals\/","title":{"rendered":"Elad FDM-S2: Eric’s method of mitigating strong local signals"},"content":{"rendered":"

\"Elad-FDM-S2-FrontPanel\"<\/a><\/p>\n

Many thanks to SWLing Post<\/em> reader Eric Cottrell, who writes:<\/p>\n

“Thanks for your excellent review of the Elad FDM-S2<\/a>. I bought one and received it yesterday.<\/p>\n

I tried out the software earlier this week by downloading 4GB of sample files from DK8OK and the Elad software. There are a lot of interesting features.<\/p>\n

It is small! I like the use of the USB port for power. I can see how it would be a good receiver to throw into your laptop bag for trips.<\/p>\n

I have a harsher Urban RF environment with 5KW and 1KW AM Broadcast transmitters within 2.5 miles. They reduce power at night. The Wellbrook AHA1530 Loop outputs a very high signal level from all the area’s AM stations. I have to use the attenuator on any radio at my QTH below about 2.5 MHz.<\/p>\n

The unit having one preselection filter for LW\/MW\/HF is noticeable as I got ADC Clip warnings when directly connected to the Wellbrook loop. Turning on the 11 dB attenuator took care of the problem and did not seem to affect the weak signals much. It also was not as bad when I connected a Mini-Circuits ZFSC-2-6+ two port splitter between the Elad and the Wellbrook.<\/p>\n

The Perseus has multiple preselection filters, but I noticed only one low pass filter for the 0 to 1.7 MHz range. So a MW band reject filter would be useful for Long Wave with both units. I plan on building an external preselector.<\/p>\n

The option for multiple receivers and two RF ranges is pretty neat. I was listening to multiple FM stations at once. This morning I set one range to 31 meters and the other to 49 meters. I listened to Radio Australia on 9580 KHz using the right laptop speaker for audio, and could check their other frequencies on 31 and 49 meters using the left laptop speaker for audio.<\/p>\n

I do HF Utility monitoring on digital signals, so I want to setup the Elad software with external decoder software. I have seen reports that the Elad can receive Airband pretty good, so I will also try receiving and decoding multiple ACARS frequencies at the same time.<\/p>\n

So many experiment to try this Winter!”<\/p><\/blockquote>\n

Thanks for sharing your experience, Eric! Since I live in such a rural area, I never have to worry much about low pass filters (though I’m sure they couldn’t hurt). I’ve had the FDM-S2 since June this year. \u00a0I can tell you that there are so<\/em> many features, settings and possibilities with this radio, you could easily spend the winter and spring experimenting. I have yet to use the WinRad app to drive the S2.<\/p>\n

Eric, we welcome any other discoveries you make along the way! Many thanks!<\/p>\n","protected":false},"excerpt":{"rendered":"

Many thanks to SWLing Post reader Eric Cottrell, who writes: “Thanks for your excellent review of the Elad FDM-S2. I bought one and received it yesterday. I tried out the software earlier this week by downloading 4GB of sample files from DK8OK and the Elad software. There are a lot of interesting features. It is […]<\/p>\n","protected":false},"author":15,"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":[373,836,3,26,43,154,158],"tags":[968,3010,3442,3011,3443,4086],"class_list":["post-11531","post","type-post","status-publish","format-standard","hentry","category-am","category-new-products","category-news","category-radios","category-shortwave-radio","category-shortwave-radio-reviews","category-software-defined-radio","tag-elad","tag-elad-fdm-s2","tag-eric-cottrell","tag-fdm-s2","tag-fdm-s2-strong-am","tag-shortwave-radio-reviews"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-2ZZ","jetpack-related-posts":[{"id":11643,"url":"https:\/\/swling.com\/blog\/2014\/12\/video-controlling-the-elad-fdm-s2-sdr-with-the-hp-stream-7-tablet\/","url_meta":{"origin":11531,"position":0},"title":"Video: Controlling the Elad FDM-S2 SDR with the HP Stream 7 tablet","author":"Thomas","date":"December 9, 2014","format":false,"excerpt":"Many thanks to SWLing Post contributor, Guy Atkins, who shares the following video\u00a0demonstrating how the Elad FDM-S2 can be controlled\u00a0with the $99 HP Stream 7 Windows 8.1 tablet PC: You can read more about Guy's FDM-S2\/HP Stream 7 setup in his previous post.","rel":"","context":"In "How To"","block_context":{"text":"How To","link":"https:\/\/swling.com\/blog\/category\/how-to\/"},"img":{"alt_text":"Elad-FDM-S2-FrontPanel","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/12\/Elad-FDM-S2-FrontPanel1-1024x452.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/12\/Elad-FDM-S2-FrontPanel1-1024x452.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/12\/Elad-FDM-S2-FrontPanel1-1024x452.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":14715,"url":"https:\/\/swling.com\/blog\/2015\/09\/elad-fdm-s2-on-sale-499-us\/","url_meta":{"origin":11531,"position":1},"title":"Elad FDM-S2 on sale $499 US","author":"Thomas","date":"September 9, 2015","format":false,"excerpt":"While browsing the Elad website, I noticed an End of Summer\u00a0sale on their US retail page. The sale includes one of my favorite sub-$1000 SDRs--the Elad FDM-S2--priced at $499 US (originally $580). If you've been on the fence about purchasing the FDM-S2, this might be a good time to bite\u2026","rel":"","context":"In "Deals"","block_context":{"text":"Deals","link":"https:\/\/swling.com\/blog\/category\/deals\/"},"img":{"alt_text":"Elad-Summer-Sale","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/Elad-Summer-Sale.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/Elad-Summer-Sale.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/Elad-Summer-Sale.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/09\/Elad-Summer-Sale.jpg?resize=700%2C400 2x"},"classes":[]},{"id":13042,"url":"https:\/\/swling.com\/blog\/2015\/04\/shortwave-radio-recordings-radio-romania-international-7\/","url_meta":{"origin":11531,"position":2},"title":"Shortwave Radio Recordings: Radio Romania International","author":"Thomas","date":"April 24, 2015","format":false,"excerpt":"For your listening pleasure: one full hour of Radio Romania International's English language service. This recording was made on April 23 at 00:00 UTC on 9730 kHz. I used my Elad FDM-S2 software defined receiver\u00a0to make this recording. As you can see from the screenshot of the Elad spectrum display\u00a0above,\u2026","rel":"","context":"In "Broadcasters"","block_context":{"text":"Broadcasters","link":"https:\/\/swling.com\/blog\/category\/broadcasters\/"},"img":{"alt_text":"Screen capture of the Elad FDM-S2 recording RRI's interval signal","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/04\/Elad-FDM-S2-Screen-1024x547.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/04\/Elad-FDM-S2-Screen-1024x547.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2015\/04\/Elad-FDM-S2-Screen-1024x547.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":9893,"url":"https:\/\/swling.com\/blog\/2014\/06\/the-elad-fdm-s2-sdr-unboxing-installing-and-a-first-recording\/","url_meta":{"origin":11531,"position":3},"title":"The Elad FDM-S2 SDR: Unboxing, installing, and a first recording","author":"Thomas","date":"June 12, 2014","format":false,"excerpt":"At the Dayton Hamvention\u00a0last month, I made a point to check out the Italian radio manufacturer, Elad. Though I've known about Elad for some time, I hadn't investigated their offerings yet simply because I was under the impression\u00a0they only sold and warrantied their equipment within Europe.\u00a0Fortunately, Elad has begun\u00a0supporting and\u2026","rel":"","context":"In "New Products"","block_context":{"text":"New Products","link":"https:\/\/swling.com\/blog\/category\/new-products\/"},"img":{"alt_text":"FDM-S2-Front","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/FDM-S2-Front.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/FDM-S2-Front.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/FDM-S2-Front.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":11585,"url":"https:\/\/swling.com\/blog\/2014\/12\/a-review-of-the-elad-fdm-s2-software-defined-receiver\/","url_meta":{"origin":11531,"position":4},"title":"A review of the Elad FDM-S2 software defined receiver","author":"Thomas","date":"December 2, 2014","format":false,"excerpt":"The following review originally appeared in the November 2014 issue of The Spectrum Monitor magazine. At the Dayton Hamvention this year, I made it a special point to check out the Italian radio manufacturer, Elad. Although I\u2019ve known about Elad and their products for some time, and often found them\u2026","rel":"","context":"In "DRM"","block_context":{"text":"DRM","link":"https:\/\/swling.com\/blog\/category\/drm\/"},"img":{"alt_text":"FDM-S2-Front","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/FDM-S2-Front.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/FDM-S2-Front.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2014\/06\/FDM-S2-Front.jpg?resize=525%2C300 1.5x"},"classes":[]},{"id":41190,"url":"https:\/\/swling.com\/blog\/2019\/12\/mike-compares-the-sdrplay-rspdx-on-mediumwave-and-longwave\/","url_meta":{"origin":11531,"position":5},"title":"Mike compares the SDRplay RSPdx on mediumwave and longwave","author":"Thomas","date":"December 15, 2019","format":false,"excerpt":"Many thanks to SWLing Post contributor, Mike Ladd with\u00a0SDRplay, who shares the following videos comparing the new RSPdx with a number of benchmark SDRs: SDRplay RSPdx and ELAD FDM-S2 weak NDB station https:\/\/youtu.be\/KbHz4sqJmpA SDRplay RSPdx and ELAD FDM-S2 medium wave selectivity https:\/\/youtu.be\/ah5Zu8qgvp8 SDRplay RSPdx and Airspy HF+ Discovery medium wave\u2026","rel":"","context":"In "DX"","block_context":{"text":"DX","link":"https:\/\/swling.com\/blog\/category\/dx\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/11\/SDRplay-RSPdx-1-3.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/11\/SDRplay-RSPdx-1-3.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/11\/SDRplay-RSPdx-1-3.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2019\/11\/SDRplay-RSPdx-1-3.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/11531","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=11531"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/11531\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=11531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=11531"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=11531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}