{"id":794,"date":"2025-02-23T22:10:09","date_gmt":"2025-02-23T22:10:09","guid":{"rendered":"https:\/\/g1lro.uk\/?p=794"},"modified":"2026-04-24T15:18:17","modified_gmt":"2026-04-24T15:18:17","slug":"uci-120-radio-less-node","status":"publish","type":"post","link":"https:\/\/g1lro.uk\/?p=794","title":{"rendered":"Introducing the UCi120 Radio-Less-Node"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"605\" src=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-front-1509x892-1-1024x605.jpg\" alt=\"\" class=\"wp-image-798\" srcset=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-front-1509x892-1-1024x605.jpg 1024w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-front-1509x892-1-300x177.jpg 300w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-front-1509x892-1-768x454.jpg 768w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-front-1509x892-1.jpg 1509w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-20959078 wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link wp-element-button\" href=\"https:\/\/g1lro.uk\/?product=allstarlink-radio-less-node-allscan-uci120\">BUY ONLINE<\/a><\/div>\n<\/div>\n\n\n\n<p class=\"wp-block-paragraph\">The AllScan UCI120 is a professional-grade USB Audio\/PTT communications interface designed for applications like AllStar, EchoLink, and other push-to-talk (PTT) communications. It serves as a high-quality interface for connecting communication microphones, speakers, and related audio equipment to computers or embedded systems.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Key Features:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Comprehensive LED Indicators:<\/strong> Displays for USB host status, Mic PTT (ASL COS), Mic Signal &amp; Clip, and RX (ASL PTT) facilitate easy monitoring and adjustment of mic input levels, reducing the risk of ADC clipping.<\/li>\n\n\n\n<li><strong>Adjustable Mic Gain:<\/strong> Offers a 50dB gain adjustment range through Mic Gain Adjust and Mic Boost controls, accommodating a wide variety of communication microphones and dynamic mics.<\/li>\n\n\n\n<li><strong>Enhanced Audio Connectivity:<\/strong>\n<ul class=\"wp-block-list\">\n<li>TRRS Line Out jack supports stereo TRS line out and an external mic input with switchable bias voltage for electret mics and headsets.<\/li>\n\n\n\n<li>Insert I\/O Jack allows integration with external audio processors, channel strips, mixers, and other audio systems.<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>Internal Adjustments:<\/strong> Equipped with internal trimmer potentiometers and DIP switches for fine-tuning mic preamp and AGC parameters, ensuring optimal audio performance.<\/li>\n\n\n\n<li><strong>Durable Design:<\/strong> Housed in an extruded aluminum enclosure with ferrite and bypass capacitor filtering on all inputs and outputs, enhancing durability and resistance to EMI\/RFI.<\/li>\n\n\n\n<li><strong>Optimized Audio Performance:<\/strong> Features 6dB\/octave bandpass filters ahead of the AGC mic preamp, ADC, and speaker amp to minimize background noise and prevent ADC clipping and AGC gain-pumping.<\/li>\n\n\n\n<li><strong>Full-Duplex Support:<\/strong> Capable of full-duplex audio operation without reliance on PTT or COS signals, functioning as a standard USB audio interface across Windows, Mac, and Linux platforms.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"605\" src=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-back-1509x892-1-1024x605.jpg\" alt=\"\" class=\"wp-image-799\" srcset=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-back-1509x892-1-1024x605.jpg 1024w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-back-1509x892-1-300x177.jpg 300w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-back-1509x892-1-768x454.jpg 768w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-back-1509x892-1.jpg 1509w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Pricing and Availability:<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>UCI120:<\/strong> Available on my eBay store (link at the top of the page) this package includes a fully assembled and tested unit , ready for connection to any Raspberry Pi or MiniPC running ASL, HamVOIP, DVSwitch, or other PTT communication applications. Note: Microphone, USB-C data lead and speaker are not included.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Applications:<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">The UCI120 is primarily intended for use in radio-less AllStar nodes but is versatile enough for any PC, smartphone, embedded, or VOIP application requiring a high-quality interface to amateur and commercial radio communication microphones and speakers. It is not designed to interface directly with radio transmitters or receivers.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"495\" src=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-Block-Diagram-1600x774-1-1024x495.png\" alt=\"\" class=\"wp-image-800\" srcset=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-Block-Diagram-1600x774-1-1024x495.png 1024w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-Block-Diagram-1600x774-1-300x145.png 300w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-Block-Diagram-1600x774-1-768x372.png 768w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-Block-Diagram-1600x774-1-1536x743.png 1536w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/UCI120-Block-Diagram-1600x774-1.png 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><figcaption class=\"wp-element-caption\">Internal elements of the UCI120, many of these elements can be tuned via internal switches, controls and jumpers.<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"631\" src=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/WhatsApp-Image-2025-02-23-at-22.09.04_bffd56ae-1024x631.jpg\" alt=\"\" class=\"wp-image-801\" srcset=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/WhatsApp-Image-2025-02-23-at-22.09.04_bffd56ae-1024x631.jpg 1024w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/WhatsApp-Image-2025-02-23-at-22.09.04_bffd56ae-300x185.jpg 300w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/WhatsApp-Image-2025-02-23-at-22.09.04_bffd56ae-768x473.jpg 768w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/WhatsApp-Image-2025-02-23-at-22.09.04_bffd56ae-1536x947.jpg 1536w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/WhatsApp-Image-2025-02-23-at-22.09.04_bffd56ae.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Connection diagram<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"552\" src=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/Screenshot-2025-02-25-160933-1024x552.png\" alt=\"\" class=\"wp-image-811\" srcset=\"https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/Screenshot-2025-02-25-160933-1024x552.png 1024w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/Screenshot-2025-02-25-160933-300x162.png 300w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/Screenshot-2025-02-25-160933-768x414.png 768w, https:\/\/g1lro.uk\/wp-content\/uploads\/2025\/02\/Screenshot-2025-02-25-160933.png 1364w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>ASL3 setup.<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When setting up the UCI120 on AllStarLink v3, accept all default settings.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">In the <em>Interface Tune CLI<\/em> menu, change option J for CTCSS to &#8216;no&#8217;, so that the menu matches these settings:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>H) Toggle PTT mode (currently 'ground')<br>I) Change Carrier From (currently 'usbinvert')<br>J) Change CTCSS From (currently&nbsp;'no')<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">For more detailed information, including schematics, block diagrams, and additional resources, please visit the <a href=\"https:\/\/allscan.info\/products\/uci120\/\">AllScan UCI120 Product Page<\/a>.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">User Recommended External Speaker:<\/h5>\n\n\n\n<p class=\"wp-block-paragraph\">I received this recommendation from Andrew \u2013 GM3AND about a speaker that  sounds better than any of the several others he has tried:<br><a href=\"https:\/\/moonrakeronline.com\/yaesu-mls-100-high-power-extension-speaker\">https:\/\/moonrakeronline.com\/yaesu-mls-100-high-power-extension-speaker <\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n","protected":false},"excerpt":{"rendered":"<p>The AllScan UCI120 is a professional-grade USB Audio\/PTT communications interface designed for applications like AllStar, EchoLink, and other push-to-talk (PTT) communications. It serves as a high-quality interface for connecting communication microphones, speakers, and related audio equipment to computers or embedded systems. Key Features: Pricing and Availability: Applications: The UCI120 is primarily intended for use in [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":798,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-794","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/g1lro.uk\/index.php?rest_route=\/wp\/v2\/posts\/794","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/g1lro.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/g1lro.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/g1lro.uk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/g1lro.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=794"}],"version-history":[{"count":9,"href":"https:\/\/g1lro.uk\/index.php?rest_route=\/wp\/v2\/posts\/794\/revisions"}],"predecessor-version":[{"id":1383,"href":"https:\/\/g1lro.uk\/index.php?rest_route=\/wp\/v2\/posts\/794\/revisions\/1383"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/g1lro.uk\/index.php?rest_route=\/wp\/v2\/media\/798"}],"wp:attachment":[{"href":"https:\/\/g1lro.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=794"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/g1lro.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=794"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/g1lro.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}