Which frequency band is primarily used for long-range tactical communications via satellites?

The selection of Ultra High Frequency SATCOM as the correct answer is based on its significant role in long-range tactical communications via satellites. This frequency band operates typically between 300 MHz and 3 GHz, and it is widely used for military satellite communications due to several advantages.

Ultrahigh frequencies are capable of penetrating through the atmosphere and can be effectively utilized for both voice and data transmissions over long distances. This capability makes it suitable for tactical situations where reliable communication is crucial. Additionally, UHF SATCOM systems often provide a higher data rate and greater resilience to interference compared to other frequency bands.

Moreover, the UHF band is particularly beneficial for mobile and portable satellite communication equipment that is often used in tactical operations. Its ability to facilitate secure communications in diverse environments underlines its importance in military operations.

In contrast, the other frequency bands mentioned, such as VHF Low Band, Very High Frequency High Band, and High Frequency, are either more suited for shorter-range communications, have limitations regarding data capacity, or may not provide the same level of reliable connectivity and performance required for long-range tactical satellite communications.