1. Dual-color for Frequency Differentiation: Our loop antenna features dual-color design, which distinguishes different frequencies and allows users to choose the frequency that suits their needs. 2. Easy to Install and Use: Our circular antenna is designed for easy installation and simple operation, ensuring users can start using it with minimal effort. 3. Compact and : Our donut antenna is small and , making it convenient to carry and store when not in use. 4. High-Quality Material: Our mw shortwave antenna is made of high-quality material that ensures durability and , providing users with long-lasting performance. 5. Fine Workmanship and No Burrs: Our medium short wave antennais finely crafted with no burrs or sharp edges, ensuring a smooth and safe user experience. The upgraded version of the donut broadband antenna has a frequency range of 10kHz-180MHz and a low-impedance converter. Compared with the old donut, this donut does not require cumbersome tuning. Low and high frequencies do not require the replacement of the antenna like the old model. Each band and each frequency All can be listened to directly, and the compatibility is strong. It is a very convenient donut antenna for those who need to scan. The set is paired with a low-impedance converter and is suitable for all radios, walkie-talkies, SDRs, radio stations, etc. Model Number:Loop Antenna Type:Indoor Uses:Small loop antenna, Donut antenna, Mini Loop, for radio antenna, tuning loop. Note:This antenna is a narrow-band high-impedance resonant antenna, which needs to be used with the high-impedance input port of the Malachite receiver, otherwise it will cause the antenna to be detuned and unable to work! ! ! Colour:Black Material:Plastic Size:about 140x90mm/5.51x3.54inch Package Contents: 1 * Low impedance converter 1 * Upgraded donut antenna 1 * Storage bag Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.