900 MHz Wireless / WiFi Band
900 MHz Wireless – This is an unlicensed operating frequency, commonly referred to as the ISM Band” (Industrial, Scientific, Medical) , which is the lowest operating frequency typically used for Wireless (WiFi) communications band.
This open frequency allocation, goes from 902 to 928 MHz, and is an unlicensed open frequency for Fixed or mobile communications. Our 900MHz Wireless Bridge kit, uses this same operating frequency range, to provide very high speed, 150 MBPS wifi data, Non-Line-Of-Sight, between two locations.
900 MHz NLOS Bridge:
Since this band is very low in the wireless spectrum, the wavelength is much longer, resulting in the ability of this wavelength to curve or bend around objects, or, the longer wavelength cannot absorb into surrounding obstructions, like the much higher 2.4GHz Frequency range. This makes the 900 MHz system, ideal for use in systems where perfect line of sight communications cannot be achieved.
This frequency generally is not used for public wifi, and you will not find any common “900MHz Access Points” available on the market, nor are there any traditional 900 MHz wifi cards or 900 MHz wifi enabled laptops. This band is generally used for point to point bridging, or, point to multipoint systems.
The 900 MHz wireless band, is much lower in operating frequency than standard WiFi bands, which are primarily 2.4 GHz and 5.8 GHz. Other frequencies are used, but are usually licensed and require government certification.
900 MHz Operating mode:
Transmission methods and modes of operation in this frequency range, are generally the same as all wifi or wireless modes. The transmission methods used on the 900MHz wireless band are the same as the 802.11 B/G/N or 802.11A (5GHz) modes, which are either CCK (Complimentary Code Keying) or, OFDM, (Orthogonal frequency-division multiplexing) generally used in your 802.11G mode.