How do I choose a frequency range for wireless systems (Frequency Finder Explained)?
To help select an appropriate operating frequency range for wireless microphones and wireless IEM systems for your geographical area we offer a tool on our website called the Frequency Finder: (http://en-us.sennheiser.com/service-support-frequency-finder).
From the control panel in the upper left corner of the page type in your zip code and click on your town or city from the pop-up list. Once the zip code is entered and the town/city selected then click SEND. The Frequency Finder queries the FCC database and reports back a list of broadcast facilities and their relative signal strengths at your location (determined by power and distance).
The results of the Frequency Finder should be interpreted as follows:
- "white" = indicates strong broadcast facility signals that might disrupt your system and would likely cause issues if these frequencies were to be used.
- "yellow" = indicates weak broadcast facility signals that should be able to be worked around to find some available frequencies to use.
- "green" = indicates vacancies (ie: no broadcast facility signals) and should result in plenty of available frequencies to use.
NOTE: Once the Frequency Finder results list has been generated a new drop down menu labelled RANGE will appear just above the RESET and SEND buttons. From the RANGE drop down menu you can select the product range that you are interested in and once a product range is selected the different operating frequency ranges of the selected product range will overlay on the Frequency Finder results list as a pale BLUE HIGHLIGHT so you can see where the frequency ranges fall. From here you can review the Frequency Finder results list to determine what operating frequency range would be optimal for your region.
The default settings of the Frequency Finder are set for general use both indoors and outdoors. If the initial results list doesn't appear to show any available frequencies try changing the "ATT" drop down menu from 30 dB to 40 dB and the color indicators for available frequencies will adjust accordingly.
NOTE: In a vacant television channel you can operate up to 8 wireless microphone systems or about 6 wireless IEM systems.
NOTE: All frequencies above 700MHz are reserved by the government to facilitate the use of internet capable mobile devices. Government regulations prohibit the sale and use of equipment that operates in these frequencies in the United States.