Check the listing for details. Micro-Power Medium Wave Transmitter Board 530-1600KHZ For Testing Crystal Radio. Color: Orange, Condition: New. Listed at 22.30 USD. Description Assembled Micro-Power Medium Wave Transmitter Board DC 9V 530-1600KHZ For Home Testing Crystal Radio Electrical Parameters: Power Supply: 9V 2A DC, 5.5 interface, internal positive and external negative (power supply is not included) Transmitting Frequency: 530 ~ 1600KHZ (radio medium wave band) High-Frequency Transmission Power: adjustable from 20 mW to 500 mW within 5 to 10 meters Antenna: 5M 1.5 ~ 2.5 copper wire for home uses Audio Input: 3.5mm at both ends Audio Source: CD, desktop computer, mobile phone, etc. Application: medium wave radio enthusiasts, for students to study the wireless signal generation and audio modulation principles of amplitude modulation transmitter. Features: -The audio amplifier circuit outputs enough audio power to the modulation circuit. -This board adopts collector modulation, featuring low distortion, adjustable amplitude, and superior sound quality, suitable for radio enthusiasts and students experiment. -Adjust the capacitance of 223 console, the frequency can be changed from 530 to 1600KHz. -Using and experimenting radio transmitters should be subject to local radio regulations. Please adjust amplitude knob to minimize power. 1: Power Supply (9V internal positive & external negative) 2: Audio Input 3: Volume Adjustment 4: Adjust Frequency 5: Adjust Modulation Frequency 6: Antenna Terminal (5M cable for home radio) Package Included: 1 x Assembled Transmitter Board Note: The transmitter board is assembled. Payment Terms 1. We accept PayPal,Payoneer,Visa Card,Google pay,Credit card etc. 2. We ship to your eBay or Paypal address. Please make sure your eBay and Paypal address is correct before you pay. Shipping Terms 1. We will process the order within the handling time ,if you have any questions, please contact us via eBay message or email. 2. For remote regions of DHL/FedEx..., extra shipping costs might be charged. Usually it costs about 30USD-50USD. We will contact you if shipping company informed us your address belongs to remote area. Thanks for your understanding. Return Terms If you receive the item that not satisfied or defective, please do not open case and kindly notify us within 30 days. We will guide you the returning process for replacement or refund. Custom Duties & Taxes 1. It is buyers responsibility to cover the import duties, taxes.We do not charge any taxes and fees, and the possible taxes and fees will be collected by the platform or by third parties such as customs and carriers. 2. Please check with your countrys customs office and inform us what/how much should declare before shipping. Feedback 1. Please kindly leave us a positive feedback and 5 star DSR if you satisfied with our product and service. Please feel free to contact us firstly if you have any problem with your order, we are responsible and credible seller and will solve the issue it for you asap. 2. If you are dissatisfied for any reason, please dont be quick to leave us neutral or negative feedback. We work hard to make sure EVERY CUSTOMER 100% SATISFIED and resolve any problem for you and always leave positive feedback to all our customers. On May 10, 2023 at 19:46:24 PDT, seller added the following information: