{"id":48378,"date":"2021-04-02T07:48:52","date_gmt":"2021-04-02T11:48:52","guid":{"rendered":"https:\/\/swling.com\/blog\/?p=48378"},"modified":"2021-04-02T08:08:20","modified_gmt":"2021-04-02T12:08:20","slug":"any-thoughts-on-this-inexpensive-si4732-based-receiver","status":"publish","type":"post","link":"https:\/\/swling.com\/blog\/2021\/04\/any-thoughts-on-this-inexpensive-si4732-based-receiver\/","title":{"rendered":"Any thoughts on this inexpensive Si4732-based receiver?"},"content":{"rendered":"<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-RX.jpeg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-48379\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-RX.jpeg\" alt=\"\" width=\"1053\" height=\"644\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-RX.jpeg 1053w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-RX-300x183.jpeg 300w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-RX-1024x626.jpeg 1024w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-RX-768x470.jpeg 768w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-RX-624x382.jpeg 624w\" sizes=\"auto, (max-width: 1053px) 100vw, 1053px\" \/><\/a><\/p>\n<p>I&#8217;ve received a number of inquiries from <em>SWLing Post<\/em> readers lately regarding an inexpensive Si4732-based mini stand-alone receiver being sold on <a href=\"https:\/\/amzn.to\/2PlBPQw\" target=\"_blank\" rel=\"noopener\">Amazon<\/a> and <a href=\"https:\/\/www.ebay.com\/sch\/i.html?_from=R40&amp;_trksid=m570.l1313&amp;_nkw=Si4732&amp;_sacat=0&amp;mkcid=1&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;campid=5337672000&amp;customid=&amp;toolid=10001&amp;mkevt=1\" target=\"_blank\" rel=\"noopener\">eBay<\/a> for around $56-66 US shipped.<\/p>\n<p>The radio is based on the Silicon Labs Si4732 DSP chip which provides the following frequency coverage:<\/p>\n<ul>\n<li>FM (64\u2013108 MHz) with RDS<\/li>\n<li>AM\/Mediumwave (520\u20131710 kHz)<\/li>\n<li>Shortwave (2.3\u201326.1 MHz)<\/li>\n<li>Longwave (153\u2013279 kHz)<\/li>\n<\/ul>\n<p>It appears the bandwidth selections are 0.5, 1.0, 1.2, 2.2, 3, and 4 kHz.<\/p>\n<p><a href=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-1.jpeg\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-48381\" src=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-1.jpeg\" alt=\"\" width=\"634\" height=\"373\" srcset=\"https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-1.jpeg 634w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-1-300x176.jpeg 300w, https:\/\/swling.com\/blog\/wp-content\/uploads\/2021\/04\/Si4732-1-624x367.jpeg 624w\" sizes=\"auto, (max-width: 634px) 100vw, 634px\" \/><\/a><\/p>\n<p>If 4 kHz is the widest AM bandwidth, that is a bit unfortunate. The radio does have a BFO for tuning SSB and CW signals.<\/p>\n<p>If I&#8217;m being honest, even though the price is a no-brainer, I&#8217;ve been hesitant to buy it simply because, due to my limited free time, I really do seek enthusiast-grade receivers for review these days. I&#8217;m less interested in radios that are cheaply made and lack the sensitivity, selectivity, noise floor, and features an SWL would desire. In other words, I&#8217;m a bit skeptical this receiver will be a proper performer.<\/p>\n<p>The frequency range is certainly adequate and Silicon Labs chips are a quality product, but as we know the Si4732 is only as good as its implementation (<a href=\"https:\/\/www.silabs.com\/documents\/public\/data-shorts\/Si4732-A10-short.pdf\" target=\"_blank\" rel=\"noopener\">click here to read the PDF data sheet<\/a>).<\/p>\n<p>I&#8217;m curious if any <em>SWLing Post<\/em> readers can comment with their experience using one of these Si4732-based receivers. Did it live up to your expectations? How does it compare with, say, an XHDATA D-808 or Tecsun PL-330? Is it sensitive with the supplied whip antenna? Does it have many birdies or other internally-generated noises? <a href=\"https:\/\/swling.com\/blog\/2021\/04\/any-thoughts-on-this-inexpensive-si4732-based-receiver\/#comments\">Please comment<\/a> and let me know if this radio is worth checking out!<\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/www.ebay.com\/sch\/i.html?_from=R40&amp;_trksid=m570.l1313&amp;_nkw=Si4732&amp;_sacat=0&amp;mkcid=1&amp;mkrid=711-53200-19255-0&amp;siteid=0&amp;campid=5337672000&amp;customid=&amp;toolid=10001&amp;mkevt=1\" target=\"_blank\" rel=\"noopener\">Click here to search eBay for this radio.<\/a><\/p>\n<p style=\"text-align: center;\"><a href=\"https:\/\/amzn.to\/2PlBPQw\" target=\"_blank\" rel=\"noopener\">Click here to check it out on Amazon.com.<\/a> (<em>SWLing Post affiliate link<\/em>)<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I&#8217;ve received a number of inquiries from SWLing Post readers lately regarding an inexpensive Si4732-based mini stand-alone receiver being sold on Amazon and eBay for around $56-66 US shipped. The radio is based on the Silicon Labs Si4732 DSP chip which provides the following frequency coverage: FM (64\u2013108 MHz) with RDS AM\/Mediumwave (520\u20131710 kHz) Shortwave [&hellip;]<\/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":[433,836,3,43],"tags":[25,9226],"class_list":["post-48378","post","type-post","status-publish","format-standard","hentry","category-mediumwave","category-new-products","category-news","category-shortwave-radio","tag-shortwave-radios","tag-si4732"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pn3uc-cAi","jetpack-related-posts":[{"id":49583,"url":"https:\/\/swling.com\/blog\/2021\/07\/the-new-ats-25-si4732-receiver-with-color-touch-screen\/","url_meta":{"origin":48378,"position":0},"title":"The new ATS-25 Si4732 receiver with color touch screen","author":"Thomas","date":"July 9, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Robert Richmond, who writes: An ATS-25 receiver has appeared on eBay and similar sites. It appears to be a touchscreen and user interface update to the previous ATS-20 model. I suppose it remains to be seen if there are any improvements to the underlying\u2026","rel":"","context":"In &quot;New Products&quot;","block_context":{"text":"New Products","link":"https:\/\/swling.com\/blog\/category\/new-products\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/ATS-25.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/ATS-25.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/ATS-25.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/ATS-25.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":50115,"url":"https:\/\/swling.com\/blog\/2021\/08\/kevins-ats-25-video-series\/","url_meta":{"origin":48378,"position":1},"title":"Kevin&#8217;s ATS-25 video series","author":"Thomas","date":"August 31, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Robert Richmond, who shares the following series of videos about the new ATS-25 receiver (mentioned in this previous post) from Kevin O'Reilly's YouTube channel. The ATS-25 - A First Look: https:\/\/youtu.be\/smPUBodXLzc ATS-25 First Power Up: https:\/\/youtu.be\/WDuCdpqlGfs ATS-25 Useful Features: https:\/\/youtu.be\/BtrWZrgI15g","rel":"","context":"In &quot;New Products&quot;","block_context":{"text":"New Products","link":"https:\/\/swling.com\/blog\/category\/new-products\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/ATS-25-1.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/ATS-25-1.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/ATS-25-1.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/ATS-25-1.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":63630,"url":"https:\/\/swling.com\/blog\/2025\/08\/building-an-swl-chimera\/","url_meta":{"origin":48378,"position":2},"title":"Building an SWL Chimera","author":"Thomas","date":"August 13, 2025","format":false,"excerpt":"By Sam (WN5C) Picture this: a cool July evening on the northern shores of Lake Huron, the water gently lapping on the beach. Feet being warmed by a smoldering fire with crystal clear skies and the Milky Way brilliantly displayed overhead. Radio in my lap, hastily deployed 20-meter vertical antenna\u2026","rel":"","context":"In &quot;Articles&quot;","block_context":{"text":"Articles","link":"https:\/\/swling.com\/blog\/category\/articles\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/08\/image4.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/08\/image4.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/08\/image4.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/08\/image4.jpg?resize=700%2C400&ssl=1 2x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/08\/image4.jpg?resize=1050%2C600&ssl=1 3x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2025\/08\/image4.jpg?resize=1400%2C800&ssl=1 4x"},"classes":[]},{"id":52706,"url":"https:\/\/swling.com\/blog\/2022\/05\/daves-updated-ats-25-review\/","url_meta":{"origin":48378,"position":3},"title":"Dave&#8217;s updated ATS-25 review","author":"Thomas","date":"May 11, 2022","format":false,"excerpt":"Many thanks to SWLing Post contributor, Dave Zantow (N9EWO), who notes that he has posted an updated review of the ATS-25 Si4732 receiver with the 4.0 firmware revision. Click here to check out his review!","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/ATS-25.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/ATS-25.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/ATS-25.jpeg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/07\/ATS-25.jpeg?resize=700%2C400&ssl=1 2x"},"classes":[]},{"id":49942,"url":"https:\/\/swling.com\/blog\/2021\/08\/the-si-307-another-si473x-portable-receiver\/","url_meta":{"origin":48378,"position":4},"title":"The SI-307: Another Si473X portable receiver","author":"Thomas","date":"August 10, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Konrad, who writes: Hello Thomas, I was checking AliExpress in search of Hanrongda HRD 747 (still nothing yet) and accidentally I've found something which might be interesting. For now there's not much information about this device, but it seems that somebody produced a handheld\u2026","rel":"","context":"In &quot;New Products&quot;","block_context":{"text":"New Products","link":"https:\/\/swling.com\/blog\/category\/new-products\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Sl-307-Si473X.jpeg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Sl-307-Si473X.jpeg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2021\/08\/Sl-307-Si473X.jpeg?resize=525%2C300&ssl=1 1.5x"},"classes":[]},{"id":48696,"url":"https:\/\/swling.com\/blog\/2021\/04\/are-there-any-tabletop-shortwave-receivers-currently-on-the-market\/","url_meta":{"origin":48378,"position":5},"title":"Are there any tabletop shortwave receivers currently on the market?","author":"Thomas","date":"April 30, 2021","format":false,"excerpt":"Many thanks to SWLing Post contributor, Peter, who asks: Two of the tabletop shortwave receivers recommended in the past are listed as discontinued by retailers. Do you have any current recommendations? Great question, Peter. I'm guessing that you're looking for a new tabletop communications receiver and I also assume you\u2026","rel":"","context":"In &quot;News&quot;","block_context":{"text":"News","link":"https:\/\/swling.com\/blog\/category\/news\/"},"img":{"alt_text":"","src":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/06\/ICR75.jpg?resize=350%2C200&ssl=1","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/06\/ICR75.jpg?resize=350%2C200&ssl=1 1x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/06\/ICR75.jpg?resize=525%2C300&ssl=1 1.5x, https:\/\/i0.wp.com\/swling.com\/blog\/wp-content\/uploads\/2016\/06\/ICR75.jpg?resize=700%2C400&ssl=1 2x"},"classes":[]}],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/48378","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=48378"}],"version-history":[{"count":0,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/posts\/48378\/revisions"}],"wp:attachment":[{"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/media?parent=48378"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/categories?post=48378"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/swling.com\/blog\/wp-json\/wp\/v2\/tags?post=48378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}