--- product_id: 587367298 title: "AM Radio Transmitter Board Kit, Short Wave Low Power Sound Amplification 100mW SW Radio Amplifier Kit, 21MHZ Crystal Frequency Stabilization for DIY Campus Broadcast Radi" brand: "cuifati" price: "€ 37.49" currency: EUR in_stock: true category: "Cuifati" url: https://www.desertcart.sk/products/587367298-am-radio-transmitter-board-kit-short-wave-low-power-sound store_origin: SK region: Slovakia --- # Supports external sound sources (phone, MP3, PC) 21MHz crystal frequency stabilization 100mW high frequency power output AM Radio Transmitter Board Kit, Short Wave Low Power Sound Amplification 100mW SW Radio Amplifier Kit, 21MHZ Crystal Frequency Stabilization for DIY Campus Broadcast Radi **Brand:** cuifati **Price:** € 37.49 **Availability:** ✅ In Stock ## Summary > 📻 Own the airwaves: DIY AM broadcasting made sleek and simple! ## Quick Answers - **What is this?** AM Radio Transmitter Board Kit, Short Wave Low Power Sound Amplification 100mW SW Radio Amplifier Kit, 21MHZ Crystal Frequency Stabilization for DIY Campus Broadcast Radi by cuifati - **How much does it cost?** € 37.49 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/587367298-am-radio-transmitter-board-kit-short-wave-low-power-sound) ## Best For - cuifati enthusiasts ## Why This Product - Trusted cuifati brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Plug & Play DIY Assembly:** Simple welding, zero debugging—get on air faster and hassle-free. - • **Compact 100mW Power Output:** Optimized low-power transmission covering over 10 meters—perfect for campus or home experiments. - • **Versatile Audio Compatibility:** Seamlessly connect smartphones, MP3 players, or computers for instant broadcast. - • **Precision 21MHz Crystal Oscillation:** Experience ultra-stable frequency for crystal-clear AM transmission. - • **Interference-Resistant Circuit Design:** Advanced filter capacitors ensure clean, ripple-free sound modulation every time. ## Overview The AM Radio Transmitter Board Kit is a compact, low-power 100mW short wave transmitter operating at a stable 21MHz frequency. Designed for educational and experimental use, it supports external audio sources like smartphones and MP3 players, requires minimal assembly without debugging, and delivers reliable AM signal transmission over 10 meters—ideal for campus broadcasts and radio enthusiasts. ## Description Specification: Item Type: AM Radio Transmitter Board Material: PCB Power Supply: Voltage DC Power Supply 9V2A; The Whole Current 50 to 80mA Frequency: 21MHZ Crystal Frequency Stabilization Adjustment Amplitude: 45% High Frequency Power: 100mW Modulation: Transformer High Potential Modulation Sound Source: External Sound Source, Available Cell Phones, MP3, Computers, etc. Transmitting Distance: Better Than 10m/32.8ft Production Difficulty: Welding, Without Debugging Applicable: Radio Enthusiasts, Students Experimental Testing Package List: 1 x AM Radio Transmitter Board 1 x Screw Package 1 x Instruction Manual 1 x Sound Cable 1 x Antenna ## Features - Educational Short Wave Transmitter: This AM radio transmitter board is designed for short wave radio experiments and tests, helping you understand the principles of AM modulation through hands-on learning and practical application. - Complete Circuit Structure: The board features a professional power input with filter capacitors (C1 to C6) to reduce interference ripples, sound amplification, sound modulation, 21MHZ high frequency oscillation, Class C high frequency amplification, and a 21MHZ low pass filter. - Stable 21MHZ Crystal Frequency: Utilizes crystal Y1 for parallel resonance, providing stable 21MHZ high frequency oscillation. The transformer B1 secondary inductance sound voltage is superimposed on the DC power to achieve modulation voltage that changes with the sound source. - Easy Assembly Without Debugging: Requires simple welding for assembly with no debugging needed. The board operates on a 9V2A DC power supply with 50 to 80mA current and delivers 100mW high frequency power with 45% adjustment amplitude. - Versatile Sound Source & Distance: Supports external sound sources including cell phones, MP3 players, and computers. Transmits AM signals over 10 meters (32.8ft), ideal for radio enthusiasts and students conducting experimental testing in campus broadcast or DIY projects. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0CL9B9P7Z | | Additional Features | AM Transmitter Experiment Kit | | Best Sellers Rank | #512,183 in Electronics ( See Top 100 in Electronics ) #2,839 in Audio Component Amplifiers | | Brand | Cuifati | | Built-In Media | Antenna, Owner's Manual, Screw Package, Sound Cable | | Color | green | | Compatible Devices | Computer, MP3 Player, Smartphone | | Connectivity Technology | Auxiliary | | Enclosure Material | Printed Circuit Board | | Frequency | 21 MHz | | Hardware Interface | Radio Frequency | | Item Type Name | Radio Antennas | | Manufacturer | CUIFATI | | Mfr Part Number | CUIFATI5oircmvshd | | Model Number | CUIFATI5oircmvshd | | Number of Batteries | 1 9V batteries required. | | Power Source | Battery Powered | | Radio Bands Supported | AM | | Smart Home Compatibility | Not Smart Home Compatible | | Tuner Type | AM | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Cuifati - **Color:** green - **Connectivity Technology:** Auxiliary - **Frequency:** 21 MHz - **Included Components:** Antenna, Owner's Manual, Screw Package, Sound Cable - **Material:** Printed Circuit Board - **Power Source:** Battery Powered - **Radio Bands Supported:** AM - **Special Feature:** AM Transmitter Experiment Kit - **Tuner Technology:** AM ## Images ![AM Radio Transmitter Board Kit, Short Wave Low Power Sound Amplification 100mW SW Radio Amplifier Kit, 21MHZ Crystal Frequency Stabilization for DIY Campus Broadcast Radi - Image 1](https://m.media-amazon.com/images/I/71i+nZGcLWL.jpg) ![AM Radio Transmitter Board Kit, Short Wave Low Power Sound Amplification 100mW SW Radio Amplifier Kit, 21MHZ Crystal Frequency Stabilization for DIY Campus Broadcast Radi - Image 2](https://m.media-amazon.com/images/I/71BOfucDbQL.jpg) ![AM Radio Transmitter Board Kit, Short Wave Low Power Sound Amplification 100mW SW Radio Amplifier Kit, 21MHZ Crystal Frequency Stabilization for DIY Campus Broadcast Radi - Image 3](https://m.media-amazon.com/images/I/713qniIVh+L.jpg) ![AM Radio Transmitter Board Kit, Short Wave Low Power Sound Amplification 100mW SW Radio Amplifier Kit, 21MHZ Crystal Frequency Stabilization for DIY Campus Broadcast Radi - Image 4](https://m.media-amazon.com/images/I/71-fllKO+WL.jpg) ![AM Radio Transmitter Board Kit, Short Wave Low Power Sound Amplification 100mW SW Radio Amplifier Kit, 21MHZ Crystal Frequency Stabilization for DIY Campus Broadcast Radi - Image 5](https://m.media-amazon.com/images/I/71ss14QumjL.jpg) ## Frequently Bought Together - Short Low Power AM Radio Transmitter Board, Sound Amplification SW Radio Amplifier Kit for DIY Campus Broadcast with 21MHZ Crystal Frequency Stabilization - BNTECHGO 24 AWG Magnet Wire - Enameled Copper Wire - Enameled Magnet Winding Wire - 4 oz - 0.0197" Diameter 1 Spool Coil Red Temperature Rating 155℃ Widely Used for Transformers Inductors - BOJACK 1N34A Germanium Diode 50 mA 65V Axial 1N34A 50 millimap 65 volt Electronic Diodes (Pack of 25) --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sk/products/587367298-am-radio-transmitter-board-kit-short-wave-low-power-sound](https://www.desertcart.sk/products/587367298-am-radio-transmitter-board-kit-short-wave-low-power-sound) --- *Product available on Desertcart Slovakia* *Store origin: SK* *Last updated: 2026-07-12*