HF Mobile Antennas are antennas designed for use in the HF (High Frequency) radio band, typically from 3 to 30 MHz. These antennas are designed to be used in mobile applications, such as on cars, boats, and other vehicles. They are usually shorter than other antennas, as they need to be able to fit in the limited space available on a vehicle. HF mobile antennas are typically made of metal, such as aluminium or copper, and are designed to be as efficient as possible in order to maximize their signal strength. They are often mounted on the vehicle's roof or hood and can be adjusted to different heights and angles to optimize their performance.