What are the Top Benefits and Top Disadvantages of Using a 900 MHz Frequency?

By: Courtney Hamby on January 8th, 2014

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What are the Top Benefits and Top Disadvantages of Using a 900 MHz Frequency?

frequency  |  range  |  900 MHZ  |  data rate  |  reach  |  wireless connectivity

When it comes to understanding wireless connectivity, you first need to understand that not all types of wireless applications are equal. Without a good working knowledge of wireless technology, it sometimes gets difficult to understand which type of wireless band radio should be employed to maximize connectivity in a particular situation. Since each wireless network behaves differently and is capable of emitting different strengths and weaknesses, it is always a good idea to calculate the requirement prior to choosing the most reliable connection.

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What Is 900 MHz Frequency?

900 MHz Frequency transmits information from mobile station to base station. This frequency is used in several regions of the world, specifically Africa, Australia, Europe, Middle East and Oceania. Use of 900 MHz frequency is mostly preferred for outdoors fixed wireless application.


Advantages Of 900 MHz Frequency

The transmitter at 900 MHz range allows different characteristics. Following are the advantages of this frequency:

  • Reliable Connectivity and Signal Strength: The primary advantage of 900 MHz range is the reliability of connection and signal penetration. This can be understood from the Path Loss Formula. A Path Loss Formula is used to calculate the loss of signal over the distance between the transmitter and the receiver. 
  • Further Reach: 900 MHz frequency fixed radio link can be almost 2.67 times farther in distance than a 2.4 GHz connection.
  • Better Penetration: A longer wavelength of 900 MHz transmission allows the connection to easily penetrate amongst dense materials such as tree line between sites etc. This property helps hugely in benefiting two linking sites where dense vegetation would otherwise cause hindrance.


Disadvantages of 900 MHz Frequency

  • Data Rate Availability: The major drawback for incorporating a 900 MHz solution is the data rate availability and possible signal interference. Though different manufacturers boast about different data transfer rates. The General rule for all wireless networks is that the higher the band the greater is the transfer speed.
  • Signal Hindrance: Since 900 MHz has a lower frequency when compared to higher frequency modules such as 2.4GHz or 5GHz, it is extremely susceptible to both broadcast as well as tall physical objects on a long range.
  • Co-Channel Interference: Since 900 MHz ranges are used in most homes and other non-WLAN broadcast, including RFID tag scanner and cordless phones, the possibility of co-channel interference is high while operating in areas that use dense technology.
  • Fresnel Zone: When it comes to a 900 MHz range, in order to get a free space propagation conditions, you would need to clear at least 60% of the first Fresnel zone. This problem can be eradicated when you elevate the antenna to an additional 15 meters on either sides of the Fresnel zone.


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