{"id":55033,"date":"2022-12-14T07:20:42","date_gmt":"2022-12-14T11:20:42","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=55033"},"modified":"2022-12-14T07:20:42","modified_gmt":"2022-12-14T11:20:42","slug":"checking-out-the-xiegu-gnr1-digital-audio-noise-filter","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2022\/12\/checking-out-the-xiegu-gnr1-digital-audio-noise-filter\/","title":{"rendered":"Checking out the Xiegu GNR1 Digital Audio Noise Filter"},"content":{"rendered":"

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

By Jock Elliott, KB2GOM<\/strong><\/p>\n

Call me a retro-crank, an old-schooler, but part of the joy of listening to shortwave is that the signals sound<\/em> like they have come from far away. There is nothing like hearing the music, the news, the commentary \u201cfiltered through the shortwaves\u201d . . . as Edward R. Murrow once put it.<\/p>\n

At the same time, I am a content DXer (thanks David Goren for that phrase; it fits perfectly what I do). \u00a0Merely hearing some scratchy, barely audible signal won\u2019t scratch the itch; I want to hear what is being broadcast clearly enough to make sense of it.<\/p>\n

And when something particularly catches my ear, there are times when I would like to minimize the noise.<\/p>\n

That\u2019s where the Xiegu GNR1 Digital Audio Noise Filter comes in. According to the Radioddity website (they loaned me the unit for testing) — https:\/\/www.radioddity.com<\/a> \u2013 \u201cThe Xiegu GNR1 digital audio noise filter is an audio processing device integrating digital noise reduction and digital filtering. It can be widely used in the external audio processing sector of all types of wireless receiving equipment such as radio transceiver, receiver, radio, to effectively reduce the background noise, improve the signal-to-noise ratio, and improve the signal identifiable degree.\u201d<\/em><\/p>\n

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

What I found is a mixed bag. I had some difficulty getting the unit to work at first when I plugged my headphones into the headphones jack on the front panel. Once I plugged the phones into the SP #2 jack on the rear panel, I found the GNR1 will, indeed, reduce the noise on a relatively \u201cfat\u201d shortwave broadcast signal, rolling off the static with no<\/u> digital artifacts and making the signal more pleasant for long-term listening. And you can use the high cut filter and low cut filter to tailor the sound to suit your ears, and they work quite well for that purpose.<\/p>\n

On weaker signals, however, the GNR1 did not provide as much help in reducing noise or sometimes could not hear the signal at all<\/u>.<\/p>\n

For example, at my location east of Troy, NY, I can hear the Canadian time station CHU on 3330 nearly all the time. Today I could hear the time \u201cpips\u201d but down in the noise. I plugged in the BHI Compact In-Line Noise Eliminating Module (which I reviewed elsewhere<\/a>), and I could hear the time station better, along the with the trickling water sound that is an artifact of the BHI noise reduction algorithm. But with the GNR1, it was as if the CHU time station had disappeared, no matter what adjustments I made to the device.<\/p>\n

Bottom line, I can provisionally recommend the GNR1for reducing noise with no artifacts and tailoring audio on strong shortwave broadcast signals, but not for weak signals.<\/p>\n","protected":false},"excerpt":{"rendered":"

By Jock Elliott, KB2GOM Call me a retro-crank, an old-schooler, but part of the joy of listening to shortwave is that the signals sound like they have come from far away. There is nothing like hearing the music, the news, the commentary \u201cfiltered through the shortwaves\u201d . . . as Edward R. Murrow once put […]<\/p>\n","protected":false},"author":114,"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":[4199,3,43],"tags":[4302,1992,10062,9323,3025,4731,10061],"class_list":["post-55033","post","type-post","status-publish","format-standard","hentry","category-accessories","category-news","category-shortwave-radio","tag-bhi-compact-in-line-noise-elimination-module","tag-dsp","tag-gnr1","tag-jock-elliott-kb2gom","tag-noise-reduction","tag-xiegu","tag-xiegu-gnr1"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-ejD","jetpack-related-posts":[{"id":43713,"url":"https:\/\/swling.com\/blog\/2020\/06\/taking-the-xiegu-g90-qrp-transceiver-to-the-field\/","url_meta":{"origin":55033,"position":0},"title":"Taking the Xiegu G90 QRP transceiver to the field!","author":"Thomas","date":"June 5, 2020","format":false,"excerpt":"Earlier this week, I took delivery of a new Xiegu G90 general coverage QRP transceiver. I'm reviewing this portable rig for The Spectrum Monitor magazine.\u00a0Although this Chinese manufacturer has been around for a few years, this was my first purchase of a Xiegu product. I've had the G90 on the\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/Xiegu-G90-Field-POTA.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/Xiegu-G90-Field-POTA.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/Xiegu-G90-Field-POTA.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/Xiegu-G90-Field-POTA.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/Xiegu-G90-Field-POTA.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":54404,"url":"https:\/\/swling.com\/blog\/2022\/10\/sometimes-the-right-tools-lead-to-agreeable-results\/","url_meta":{"origin":55033,"position":1},"title":"Sometimes the right tools lead to agreeable results","author":"Jock Elliott","date":"October 23, 2022","format":false,"excerpt":"By Jock Elliott, KB2GOM Listening to the HF ham bands can be a lot of fun. All you need is a shortwave receiver capable of receiving single sideband (SSB) transmissions and a chart of the amateur bands. You can find downloadable PDF charts of the United States Amateur Radio Band\u2026","rel":"","context":"In "Antennas"","block_context":{"text":"Antennas","link":"https:\/\/swling.com\/blog\/category\/antennas\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/10\/bhi-shortwave-001-1024x768.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/10\/bhi-shortwave-001-1024x768.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2022\/10\/bhi-shortwave-001-1024x768.jpg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":47462,"url":"https:\/\/swling.com\/blog\/2021\/01\/xiegu-gsoc-after-latest-v1-3-firmware-update\/","url_meta":{"origin":55033,"position":2},"title":"Xiegu GSOC after latest v1.3 firmware update","author":"Thomas","date":"January 24, 2021","format":false,"excerpt":"Yesterday, I cleared my radio bench and performed a few firmware updates that were recently published for the Xiegu GSOC Controller and Xiegu G90. Upgrading the Xiegu GSOC to the latest firmware version requires also upgrading the Xiegu G90 to take full advantage of the GSOC fixes. I downloaded the\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Xiegu-GSOC-3.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Xiegu-GSOC-3.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Xiegu-GSOC-3.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Xiegu-GSOC-3.jpeg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/11\/Xiegu-GSOC-3.jpeg?resize=1050%2C600&ssl=1 3x"},"classes":[]},{"id":44131,"url":"https:\/\/swling.com\/blog\/2020\/07\/upgrade-the-encoder-on-your-xiegu-g90-for-about-8-00-us\/","url_meta":{"origin":55033,"position":3},"title":"Upgrade the encoder on your Xiegu G90 for about $8.00 US","author":"Thomas","date":"July 3, 2020","format":false,"excerpt":"Shortly after posting some of my initial impressions of the Xiegu G90, SWLing Post contributor, Guy Atkins, encouraged me to upgrade the stock G90 tuning knob\/encoder with one that is highly recommended by the G90 community. 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Although I'll address this in detail in my upcoming TSM review, I thought I'd also share a few notes with you.\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\/2020\/06\/Xiegu-G90-Unboxing.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/Xiegu-G90-Unboxing.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/Xiegu-G90-Unboxing.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2020\/06\/Xiegu-G90-Unboxing.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":17193,"url":"https:\/\/swling.com\/blog\/2016\/02\/the-xiegu-x5105-a-new-qrp-portable-transceiver-in-development\/","url_meta":{"origin":55033,"position":5},"title":"The Xiegu X5105: a new QRP portable transceiver in development","author":"Thomas","date":"February 3, 2016","format":false,"excerpt":"Many thanks to SWLing Post reader, Mike, who writes: I thought your readers might like to know about the new\u00a0Xiegu X5105 [HF] transceiver which is being developed by the\u00a0Wouxun group\u00a0out of China (the same company who produces an inexpensive line of amateur HTs). According to YaesuFT817.com, the X5105's receiver is\u2026","rel":"","context":"In "Ham Radio"","block_context":{"text":"Ham Radio","link":"https:\/\/swling.com\/blog\/category\/ham-radio\/"},"img":{"alt_text":"Xiegu-X5105","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/02\/Xiegu-X5105.jpg?resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/02\/Xiegu-X5105.jpg?resize=350%2C200 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/02\/Xiegu-X5105.jpg?resize=525%2C300 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/02\/Xiegu-X5105.jpg?resize=700%2C400 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/55033","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\/114"}],"replies":[{"embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/comments?post=55033"}],"version-history":[{"count":3,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/55033\/revisions"}],"predecessor-version":[{"id":55045,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/55033\/revisions\/55045"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=55033"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=55033"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=55033"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}