The 900 MHz band allocation refers to a portion of the radio frequency spectrum reserved by regulatory authorities for various communications and industrial uses. It generally ranges from 902 MHz to 928 MHz in the United States and varies slightly in other parts of the world. This band is commonly used for mobile communication, wireless Lans (local area networks), industrial and scientific applications, and certain types of amateur radio services.
The 900 MHz frequency band encompasses the frequency range from 900 MHz to 928 MHz.
It is part of the UHF (ultra high frequency) spectrum and is used for a wide range of wireless communications applications, including cellular networks, wireless data transmission and short-term communications devices.
The number of channels in the 900 MHz band may vary depending on the specific application and regional regulatory allocations. Typically, this group can accommodate multiple channels for different communication systems and devices.
For example, in wireless communication systems, channels are typically spaced apart to avoid interference and maximize spectrum usage efficiency.
The 900 MHz ISM (Industrial, Scientific and Medical) band is a specific segment within the 900 MHz frequency range allocated for unlicensed use by industrial, scientific, medical and consumer devices.
Devices operating in this band must comply with regulatory requirements regarding emissions and interference levels to ensure compatibility with other users and to avoid disruption to approved services.
The range of a 900 MHz signal may vary depending on factors such as transmit power, antenna design, and environmental conditions. Typically, in open outdoor environments with aiming conditions, 900 MHz signals can travel several kilometers. However, indoor ranges are generally shorter due to obstructions and signal absorption by building materials.
The range may also be affected by interference and the presence of other electronic devices operating in the same frequency band