Wireless: Which Wireless Products require Frequency Coordination information?
Question: Which Clear-Com wireless products require frequency coordination for use in the US?
Answer:
CellCom (US version): CellCom only operates in the 1.92 - 1.93 GHz band in the US and does not require frequency coordination of any type as the frequencies of the CEL-TA and CEL-BPs hop within this band.
Tempest: This product uses Spread Spectrum Frequency Hopping Technology to operate in the 2.4 GHz band, no coordination is necessary in most cases. Tempest can avoid some 2.4 GHz WiFi through the use of its Radio Band configuration menu.
WBS-670/680: This is a UHF analog wireless product, most users can operate a single / two systems without the need of advanced frequency coordination by simply using the built in preset group/channels and or by the use of the Clear Scan frequency sensing option built into the base station. Clear Scan sweeps the operating band and provides the user the option to select the cleanest group/channels to select. In the case of multiple WBS-670/680 systems (three or more) along with other wireless microphones and or wireless IFB the user may wish to employ specialized frequency intermod programs to determine custom frequencies for all products used dependant on location to minimize interference from local analog and DTV signals.
PTX-3 / PRC-2 IFB: This is a UHF analog wireless product, most users can operate several units without the need for advanced frequency coordination software programs. Some thought to location must be factored in to avoid local TV channel interference. The product is available in three different frequency bands to minimize adjacent TV channel interference.
General Note: In cases where multiple channels of UHF wireless IFB, UHF wireless intercom and or UHF wireless microphones need to operate together the use of frequency coordination software is necessary to avoid channel intermod issues. This software determines all frequencies involved along with local TV channels to find and or verify specific operating frequencies for all wireless products to be used at the site or location. This typically done on large shows / live events where 50 -60 different frequencies can be in play at any given time. In addition to frequency coordination programs the use of a spectrum analyzer can be useful in determining non-accounted for frequencies and interference causing signals in the band of interest.
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