{"title":"Collections","description":null,"products":[{"product_id":"am-radio-ic-kit-3","title":"Solderless AM Radio IC Kit 3","description":"\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/am-radio-ic-kit-3-manual.pdf\"\u003eRadio IC Kit 3 Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eThe Radio IC Kit 3 is a simple AM broadcast band receiver kit designed for the TA7642 radio IC. AM Radio IC Kit 3 does not require soldering making it great for beginners.\u003c\/p\u003e\n\u003cp\u003eAM Radio IC Kit 3 is a great way to get started in electronics and radio building. This is a fun and simple project for both beginners and expert builders alike. Everything needed to build a fully functional radio is included in the kit. Easy to assemble with no soldering required. AM Radio IC Kit 3 is a great project to build with your child or grandchild, scout groups and schools.\u003c\/p\u003e\n\u003cp\u003eThe kit contains small parts that may be a choking hazard. Adult supervision is always advised while building the radio kit.\u003c\/p\u003e\n\u003cp\u003eThe circuit board is approximately 4 5\/8\" by 5\".\u003c\/p\u003e\n\u003cp\u003eThe Radio IC Kit 3 is a TRF ( Tuned Radio Frequency, Tuned RF ) type receiver. This is the most basic type of radio receiver with no regeneration or re-genitive feedback. The variable capacitor and antenna coil form a “Tank” circuit that tunes the radio stations frequency then the TA7642 amplifies the radio stations radio frequency then “Rectifies” (Converts to Audio) it then amplifies the audio and powers the Earphone.\u003c\/p\u003e\n\u003cp\u003eAM Radio IC Kit 3 includes radio IC TA7642 but the same board and circuit will work with any of the ZN414 family of radio IC's. \u003cbr\u003e\u003ca href=\"https:\/\/atomic-29.com\/collections\/integrated-circuits?filter.p.m.custom.ic_type=Radio\"\u003eClick here\u003c\/a\u003e to browse our selection of radio IC's.\u003c\/p\u003e\n\u003cp\u003eThe TA7642 radio integrated circuit is based off the ZN414 from the 1970s. There have been several manufactures of replacement integrated circuits for the ZN414. The default radio IC included with the kit is the TA7642. We currently supply several alternate radio integrated circuits; CD7642, MK484, TA7642, UTC7642, and YS414. Any of these can be substituted in the circuit for the TA7642. From our testing and customer feedback, the KM484 (not MK484) has the highest overall gain. However, it tends to fall into oscillation easily. The CD7642, TA7642, UTC7642, and YS414 have a gain just below the MK484.\u003c\/p\u003e\n\u003cp\u003eThe audio output must be connected to a piezo high impedance earphone or headphone. This kit is not designed for use with magnetic earphones or headphones.\u003c\/p\u003e\n\u003cp\u003eRadio IC Kit 3 includes a ceramic earphone with wire ends. The Radio IC Kit 3 also has been tested with the following earphones and headphone available separately:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeramic Earphone\u003c\/strong\u003e\u003cbr\u003eIncluded in this kit. Ceramic earphone with wire ends. Part number CerEar. \u003ca href=\"\/products\/ceramic-earphone\"\u003eClick here for details\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCeramic Earphone 1\/8\" Plug End\u003c\/strong\u003e\u003cbr\u003eCeramic earphone with 1\/8\" plug end. Part number CerEar-Plug. \u003ca href=\"\/products\/ceramic-earphones-plug-ends\"\u003eClick here for details\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"\/products\/1-8-inch-phone-jack\"\u003eClick here for 1\/8\" jack\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePiezoelectric High Impedance Ceramic Headphone\u003c\/strong\u003e The Piezoelectric High Impedance Ceramic Headphones. Part number CERHEAD2. \u003ca href=\"\/products\/piezoelectric-high-impedance-ceramic-headphone-2\"\u003eClick here for details\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"\/products\/mono-1-4-phone-jack\"\u003eClick here for 1\/4\" jack\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eParts List\u003c\/strong\u003e\u003cbr\u003e1 - Circuit Board\u003cbr\u003e1 - \u003ca href=\"\/products\/180uh-loopstick-antenna-coil\"\u003e180uh ferrite loopstick antenna (lugs pre-soldered on)\u003c\/a\u003e\u003cbr\u003e1 - \u003ca href=\"\/products\/variable-capacitor-266pf\"\u003eVariable capacitor dual section 266pf pre-soldered to circuit board\u003c\/a\u003e\u003cbr\u003e1 - \u003ca href=\"\/products\/ta7642-am-radio-ic\"\u003eIC1 TA7642 radio IC\u003c\/a\u003e\u003cbr\u003e1 - \u003ca href=\"\/products\/100k-1-4-watt-carbon-film-resistor\"\u003eR1 100K resistors (brown black yellow gold)\u003c\/a\u003e\u003cbr\u003e1 - R2 470 ohm resistor (yellow violet brown gold)\u003cbr\u003e1 - C1 0.01uf capacitor (marked 103)\u003cbr\u003e1 - C2 0.1uf capacitor (marked 104)\u003cbr\u003e1 - \u003ca href=\"\/products\/ceramic-earphone\"\u003eCeramic earphone\u003c\/a\u003e\u003cbr\u003e1 - \u003ca href=\"\/products\/potentiometer-switch-2k\"\u003e2K variable resistor with switch\u003c\/a\u003e\u003cbr\u003e1 - \u003ca href=\"\/products\/knob-34\"\u003e34.8mm Variable capacitor knob\u003c\/a\u003e\u003cbr\u003e1 – \u003ca href=\"\/products\/shaft14\"\u003e14mm Variable capacitor shaft and screw\u003c\/a\u003e\u003cbr\u003e1 - Variable resistor knob\u003cbr\u003e1 - AA battery holder with screw\u003cbr\u003e15 - \u003ca href=\"\/products\/brass-4-40-screw-3-8\"\u003eBrass #4 3\/8\" panhead screws\u003c\/a\u003e\u003cbr\u003e4 - \u003ca href=\"\/products\/brass-4-40-screw-1-2\"\u003eBrass #4 1\/2\" panhead screws\u003c\/a\u003e\u003cbr\u003e28 - \u003ca href=\"\/products\/brass-4-40-nut\"\u003eBrass #4 nuts\u003c\/a\u003e\u003cbr\u003e15 - \u003ca href=\"\/products\/brass-4-washer\"\u003eBrass #4 washers\u003c\/a\u003e\u003cbr\u003e2 - \u003ca href=\"\/products\/brass-4-40-thumbnut\"\u003eBrass #4 thumb nuts\u003c\/a\u003e\u003cbr\u003e4 - Nylon feet\u003cbr\u003e2 - Coil clamps\u003cbr\u003e1 - Philips screwdriver\u003cbr\u003e1 - 1\/4” wrench\u003cbr\u003e\u003c\/p\u003e","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983951782258,"sku":"AMRIK-3","price":48.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/am-radio-ic-kit-3-1.jpg?v=1782564645"},{"product_id":"solderless-crystal-radio-kit-5","title":"The Airwave — Solderless Crystal Radio Kit","description":"\u003cp\u003eBuild a working radio powered by nothing but the signal in the air.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe Airwave\u003c\/strong\u003e is a solderless crystal radio kit that lets you tune in local AM stations without batteries, a power cord, or an external power source. The radio captures the tiny amount of energy it needs directly from the radio waves traveling through its antenna.\u003c\/p\u003e\n\u003cp\u003eIt’s one of the simplest—and most fascinating—ways to experience the fundamentals of radio.\u003c\/p\u003e\n\u003cp\u003eDesigned for beginners and curious builders, The Airwave includes nearly everything needed to assemble a complete working crystal radio. No soldering is required.\u003c\/p\u003e\n\u003ch2\u003eWhat You’ll Build\u003c\/h2\u003e\n\u003cp\u003eA functional AM crystal radio featuring:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eA large 3½-inch hand-wound air coil\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVariable tuning capacitor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1N60 germanium diode detector\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCeramic earphone\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApproximately 30 feet of antenna wire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApproximately 10 feet of ground wire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBrass hardware\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCircuit board\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTuning knob\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNylon feet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe kit even includes a screwdriver and wrench.\u003c\/p\u003e\n\u003cp\u003eOnce assembled and connected to a suitable antenna and ground, slowly turn the tuning knob and listen for local AM stations—using only energy captured from the signal itself.\u003c\/p\u003e\n\u003ch2\u003eNo Batteries. No Plug. Just Radio.\u003c\/h2\u003e\n\u003cp\u003eYour antenna captures radio-frequency energy traveling through the air. The coil and variable capacitor select a station, the germanium diode extracts the audio signal, and the sensitive ceramic earphone allows you to hear it.\u003c\/p\u003e\n\u003cp\u003eNo battery is required.\u003c\/p\u003e\n\u003ch2\u003eSkill Level\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eBeginner \/ Curious Builder\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eNo soldering is required. During the build, you will wind the radio’s coil, install components and hardware, and connect the antenna, ground wire, and earphone.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdditional tools required:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWire cutters or fingernail clippers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1\/8-inch jeweler’s screwdriver\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBuild Instructions\u003c\/h2\u003e\n\u003cp\u003eDownload and review \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/The_Airwave_Build_Companion.pdf\"\u003eThe Airwave Build Companion\u003c\/a\u003e before beginning your project.\u003c\/p\u003e\n\u003cp\u003eThe illustrated companion includes the complete parts list, step-by-step assembly instructions, safety information, antenna and grounding guidance, and troubleshooting tips.\u003c\/p\u003e\n\u003ch2\u003eWhat’s Included\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e1 circuit board\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 dual-section 266 pF variable capacitor, pre-soldered to the circuit board\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 1N60 germanium diode\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 .001 µF capacitor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 47K resistor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 ceramic earphone\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 variable capacitor knob\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 variable capacitor shaft and screw\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e10 brass #4 × 3\/8-inch pan-head screws\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e8 brass #4 × 1\/2-inch pan-head screws\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e5 brass #4 thumb nuts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e26 brass #4 nuts\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e14 brass #4 washers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e4 nylon feet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 high-impact polystyrene coil form\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 spool of 22 AWG green magnet wire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApproximately 30 feet of 22 AWG stranded antenna wire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eApproximately 10 feet of 22 AWG stranded ground wire\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 small piece of sandpaper\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 Phillips screwdriver\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e1 1\/4-inch wrench\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWant More Volume?\u003c\/h2\u003e\n\u003cp\u003eThe Airwave can also be paired with Atomic 29’s \u003cstrong\u003eAudio Amplifier Kit 2\u003c\/strong\u003e, sold separately, for stronger audio.\u003c\/p\u003e\n\u003ch2\u003eA Note About Crystal Radios\u003c\/h2\u003e\n\u003cp\u003eCrystal radio reception depends on your location, nearby stations, antenna placement, grounding, surrounding buildings, terrain, and atmospheric conditions. A good antenna and proper ground can make a dramatic difference.\u003c\/p\u003e\n\u003cp\u003eExperimenting with these variables is part of the experience. You’re not simply assembling a radio—you’re exploring the invisible signals already passing through the space around you.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSmall Parts Warning:\u003c\/strong\u003e This kit contains small components that may present a choking hazard. Adult supervision is recommended when children are building or using the kit. Never connect the antenna or ground to an electrical outlet, battery, or other power source. Do not use an outdoor antenna or operate the radio during an electrical storm.\u003c\/p\u003e","brand":"Atomic 29","offers":[{"title":"Default Title","offer_id":61983956599154,"sku":"CRK-5","price":62.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0983\/1894\/2578\/files\/final_photo_airwave.png?v=1791930558"}],"url":"https:\/\/atomic-29.com\/collections\/collections.oembed","provider":"Atomic 29","version":"1.0","type":"link"}