Qrm x Phase 1-30MHz HF Bands Metal Adjustable Amplification Replacement Amplifier Parts for DIY Assembly Features: Say goodbye to unwanted signals with our 1~30 MHz High-Frequency Noise Canceller Board – the solution for crystal-clear radio communication. Made of high-quality plastic, our noise canceller board eliminates QRM from your to antenna feeder without any additional modifications to your radio. It comes with built-in PTT control that keeps the connection active during transmission. Our product is perfect for amateur radio enthusiasts, HAM radio operators, and anyone who needs to eliminate unwanted signals from their radio communication. Whether you're broadcasting from your home or out in the field, this noise canceller board is must-have. It's for use in areas with high levels of such as environments or areas near power lines. With its innovative design and easy installation process, our noise canceller board will revolutionize the way you communicate over the airwaves. Keywords: radio communication, noise canceller, QRM Specifications: Material: Plastic PCB :73x85x1.6mm Package Includes: 1 QRM Note: Please allow little errors due to manual measurement. Due to the difference between different monitors, the pictures may not reflect the actual color of the item. _x000D_