{"product_id":"diy-fm-radio-kit","title":"DIY FM Radio Kit","description":"\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMinimum Age:\u003c\/strong\u003e 14+\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDifficulty Level:\u003c\/strong\u003e 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEstimated Build Time:\u003c\/strong\u003e 3–5 hours\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhy This Project Belongs in Your Lab:\u003c\/h2\u003e\n\u003cp\u003eExperience the satisfaction of creating something extraordinary from scratch. The DIY FM Radio Kit is a precision-cut project designed to challenge your mechanical logic and reward you with a high-quality finished masterpiece.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e HU-017B (Upgraded V5.0)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFrequency Range:\u003c\/strong\u003e 87–108MHz (Standard FM Band)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRadio Module:\u003c\/strong\u003e RDA5807s (Integrated Signal Processing)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePower Amplifier:\u003c\/strong\u003e TDA2822 Integrated Circuit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 8Ohm 0.5W High-Fidelity Speaker\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e DC 3V – 5V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay Type:\u003c\/strong\u003e 4-Digit LED Tube (Frequency \u0026amp; Signal Strength)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage:\u003c\/strong\u003e TQFP Surface-Mount Integration\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Signal Precision:\u003c\/strong\u003e The V5.0 features an upgraded search threshold, allowing you to capture weak signals that other DIY kits miss. The digital tube display gives you real-time feedback on both your tuned frequency and your current signal strength.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSmart Memory Management:\u003c\/strong\u003e Never lose your station again. This kit includes power-off memory and automated list management, allowing the radio to scan, store, and recall your favorite stations even after the batteries are swapped.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Fidelity Amplification:\u003c\/strong\u003e The power section utilizes the TDA2822 IC, delivering a crisp, loud output through the included 0.5W speaker. It features built-in noise cancellation to ensure your audio remains clear even in interference-heavy environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnergy Efficient Logic:\u003c\/strong\u003e Engineered for the mobile workshop, the HU-017B includes a dedicated power-saving mode and an integrated transparent battery box (optional), ensuring your project looks as clean as it sounds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCircuit Architecture:\u003c\/strong\u003e Combined MCU control with dedicated RF and Audio stages.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVolume Control:\u003c\/strong\u003e 15-Level digital potentiometer adjustment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChassis Design:\u003c\/strong\u003e Professional-grade transparent housing with integrated back cover for a \"clean-build\" aesthetic.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEnhancements:\u003c\/strong\u003e Soft-mute logic and bass-boost circuitry for superior audio fidelity.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe TQFP Challenge:\u003c\/strong\u003e This kit features a TQFP package, offering a fantastic opportunity to practice fine-pitch soldering. Use a fine-tip iron and a touch of flux to ensure those integrated circuits are seated perfectly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalibration:\u003c\/strong\u003e Once powered on, use the automated search function to populate your station list. You can manually adjust the search threshold if you are in a high-interference area to filter out ghost signals.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAntenna Tip:\u003c\/strong\u003e For the best reception in a basement or workshop, ensure your antenna lead is fully extended. The RDA5807s is high-sensitivity, but a clear \"line-of-sight\" to the airwaves always helps.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Crank Town Kits","offers":[{"title":"With case","offer_id":48382044242075,"sku":"14:1254#With case","price":21.0,"currency_code":"USD","in_stock":true},{"title":"Without case","offer_id":48382044274843,"sku":"14:350852#Without case","price":17.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0759\/3715\/3179\/files\/Sf998bc25667b49c391d10682c3ff6cceV.webp?v=1776691010","url":"https:\/\/cranktownkits.shop\/products\/diy-fm-radio-kit","provider":"Crank Town Kits","version":"1.0","type":"link"}