Upgraded donut broadband antenna, frequency range 10 kHz–180 MHz, with low impedance converter. This model does not require tuning. Low and high frequencies can be received without antenna replacement. Each band and frequency can be accessed directly, with strong compatibility. Easy to Install and Use: The circular antenna is designed for easy installation and simple operation, allowing users to start using it with minimal effort. The medium/shortwave antenna is finely crafted with smooth edges, ensuring a safe user experience. Donut broadband receiving antenna, shortwave antenna, aviation receiving antenna, FM antenna, AM antenna. Default connector: SMA male (center pin and internal thread). Compatible with UV-K5/K6 walkie-talkies. Specifications: 1. Frequency: 10 kHz–180 MHz 2. Connector: SMA male (center pin and internal thread) Applications: Small loop antenna, donut antenna, mini loop, radio antenna, tuning loop. Note: This antenna is a narrow-band, high-impedance resonant antenna. It must be used with the high-impedance input port of a compatible receiver; otherwise, detuning may occur and the antenna may not function properly. Note: Slight variations may occur between production batches. Color: As shown in photo Material: ABS Package Contents: 1 × Upgraded donut antenna Note: Lighting conditions and display settings may cause slight color differences between the image and the actual product. Measurement tolerance: ±1–3 cm.