Micro-Power Medium Wave Transmitter For Testing Crystal Radio Domestic Use

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Description<br>Micro-Power Medium Wave Transmitter Board Assembled For Testing Crystal Radio Domestic Use<br>Video For Radio Sound Performance:Please contact us for it,thanks~<br>Note: The color of the PCB may vary because of different production lot.<br>Electrical Parameters:<br>- Power Supply: 9V2A DC, 5.5 interface, internal positive and external negative (power supply is not included)<br>- Transmitting Frequency: 530 ~ 1600KHZ (radio medium-wave band)<br>- High-Frequency Transmitting Power: About 500 mW for uses within 5 to 10 meters.<br>- Antenna: 5M 1.5 ~ 2.5 copper wire for home uses<br>- Audio Input: 3.5mm at both ends<br>- Audio Source: CD, desktop computer, mobile phone, etc.<br>- Application: Medium wave radio enthusiasts, for students to study the principle of wireless signal generation and modulation<br>1: Power Supply (9V. Internal positive & external negative)<br>2: Audio Input<br>3: Volume Adjustment<br>4: Adjust Frequency<br>5: Adjust Modulation Frequency<br>6: Antenna Terminal (5M cable for home radio)<br>Audio amplifier circuit outputs sufficient audio power to modulation circuit.<br>With collector modulation, this board features small distortion, adjustable amplitude, and excellent sound quality. It is suitable for radio enthusiasts and students' experiment.<br>Adjust 223 tuning capacitor to change frequency in the range of 530 ~ 1600KHz.<br>Use and experimental radio transmitters are subject to local radio regulations. Please adjust amplitude knob to minimize power.<br>Shipping Terms<br>- For remote regions, we will charge your extra shipping costs. Usually it cost about 35USD-50USD. We will contact you after your payment. Thanks for your understanding.<br>Custom Duties & Taxes<br>1. Import duties, taxes, and charges are not included in the item price or postage cost. These charges are the buyer's responsibility.<br>2. Avoiding some unnecessary trouble, please check with your country's customs office to inform us what we should declare its value before shipping.<br>