Donut Antenna module SW Shortwave Antenna AM Medium Wave Antenna Broadband Reception Antenna Mini Loop Antenna Module Features: 1. Omnidirectional coverage: The design of circular antennas often gives them good omnidirectional radiation characteristics, which means that the signal transmission or reception in all directions on the horizontal plane is relatively uniform, suitable for broadcasting and multi-directional communication needs. 2. Broadband capability: These types of antennas can often cover a wide frequency range, including both medium frequency (MF) and high frequency (HF) bands, suitable for receiving or transmitting signals from multiple frequency bands. 3. Space efficiency: Due to its unique circular design, the donut antenna occupies less space compared to traditional long line antennas, making it easy to install and deploy in space constrained environments. 4. Easy to install and adjust: Most designs are easy for users to install on their own, and some models may provide tunable components that allow users to adjust the operating frequency as needed to optimize the receiving or transmitting effect. 5. Multi functional use: Small in size, easy to carry, using variable capacitance tuning function to improve signal reception effect, very suitable for use with peacock stone receivers. Parameter: Blue: SW shortwave antenna Frequency range: 4MHz-24MHz Interface: SMA needle interface Size: Length 110 * Width 100 * Height 20mm Red: AM medium wave antenna Frequency range: 500kHz-2000kHz Interface: SMA needle interface Product Description: The set of circular antennas consisting of medium wave ring (red) and short wave ring (blue) is a narrowband high impedance resonant antenna (Hi-Z). Therefore, when connected to a peacock receiver, the medium wave and short wave circular rings should be connected to the high impedance antenna input terminal (Hi-Z) of the peacock. Incorrect connection can cause impedance mismatch of the antenna, resulting in antenna detuning and inability to operate. Sweet donut medium and short wave antenna set, one each, small loop antenna, circular antenna, mini loop, radio antenna, tuning loop. This antenna is a narrowband high impedance resonant antenna that needs to be used in conjunction with a high impedance input port of a peacock receiver, otherwise it may cause antenna detuning and malfunction! Black: Broadband receiving antenna Frequency: 10k-180MHz Connector: SMA male head (inner needle and inner thread) Size: Length 110 * Width 100 * Height 12mm Product Description: Upgraded Sweet Donut Broadband Antenna, with a frequency range of 10kHz-180MHz and a low impedance converter. This model does not require complicated tuning and can be used directly for low and high frequencies without changing the antenna. Each band and frequency can be listened to directly, with strong compatibility. It is recommended to use it with Quansheng UV-k5/k6 walkie talkies. Green: _x000D_ Mini Donut FM Antenna Product Name: Mini Donut FM Antenna_x000D_ Frequency range: 75MHz-135MHz ( 1MHz)_x000D_ Maximum power: 5W_x000D_ Interface type: SMA male (standard threaded interface, compatible with most FM transmission devices)_x000D_ Size: 126mm 102.5mm (including interface) Package include: 1X module _x000D_