Wireless: How does DX410 work in the crowded 2.4Ghz WiFi RF sprecturm
The Clear-com DX wireless intercom systems utilize a Frequency Hopping Spread Spectrum (FHSS) radio in order to provide robust communications. This system operates in the unlicensed 2.4 GHz band. With the proliferation of other devices over the past few years in
the same 2.4 GHz band, instances where these devices and systems can interfere with each other has greatly increased.
To further complicate matters, the European Union has introduced new radio standards for equipment operating in this band in an attempt to reduce interference between equipment from different manufacturers. This European Telecommunications Standards Institute (ETSI) harmonized European standard is known as EN 300 238 v1.8.1.
CLEAR-COM Adaptive Frequency Hopping
In order to reduce interference with other equipment and comply with these new regulations, Clear-Com has implemented an Adaptive Frequency Hopping (AFH) mode for the new DX EU base stations. The key idea behind AFH is using only the good frequencies, or channels, unoccupied by other equipment. The system scans for other signals and avoids these signals during operation. Since the radio environment is constantly changing, there is a continuous process of scanning for used frequencies and updating the list of good channels.
The Clear-Com system utilizes 46 discrete frequencies, or channels, within the 2.4 GHz spectrum in order to communicate voice and data. The process of deciding which channels should be used is a 3-stage process. The process includes scanning for occupied channels, the broadcast of a channel exclusion list and the use of the exclusion list.
Available settings include:
High (H) - Scans the Higher frequencies.
Low (L) - Scans the Lower frequencies.
All (A) - All frequencies are scanned.
AFH (E) - (European Mode) Advanced Frequency Hopping searches for the best frequency
See attached for details
the same 2.4 GHz band, instances where these devices and systems can interfere with each other has greatly increased.
To further complicate matters, the European Union has introduced new radio standards for equipment operating in this band in an attempt to reduce interference between equipment from different manufacturers. This European Telecommunications Standards Institute (ETSI) harmonized European standard is known as EN 300 238 v1.8.1.
CLEAR-COM Adaptive Frequency Hopping
In order to reduce interference with other equipment and comply with these new regulations, Clear-Com has implemented an Adaptive Frequency Hopping (AFH) mode for the new DX EU base stations. The key idea behind AFH is using only the good frequencies, or channels, unoccupied by other equipment. The system scans for other signals and avoids these signals during operation. Since the radio environment is constantly changing, there is a continuous process of scanning for used frequencies and updating the list of good channels.
The Clear-Com system utilizes 46 discrete frequencies, or channels, within the 2.4 GHz spectrum in order to communicate voice and data. The process of deciding which channels should be used is a 3-stage process. The process includes scanning for occupied channels, the broadcast of a channel exclusion list and the use of the exclusion list.
Available settings include:
High (H) - Scans the Higher frequencies.
Low (L) - Scans the Lower frequencies.
All (A) - All frequencies are scanned.
AFH (E) - (European Mode) Advanced Frequency Hopping searches for the best frequency
See attached for details
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