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Technical Library:

72 MHz or 216 MHz? Should I use 72 MHz or 216 MHz for my installation?
A great article on this subject appears here.
72 MHz Compatibility Chart What brand receivers can be used with what brand transmitters and vice versa.
Click here for chart.
216 MHz Compatibility Chart What brand receivers can be used with what brand transmitters and vice versa.
Click here for chart.
Antenna Application Guide Williams Sound has published an informative guide to antennas for hearing assistance applications. To go to that publication, click here.