A filter may be installed in a broadcasting or other electrical network to direct the flow of information carried within specific electrical frequencies. There are many kinds of electronic filters and the type of filter used is determined by the specific job to be done. An attempt is made to address these non-standard needs early, before volume demand attracts potential competition. The principal product line is electronic filters which perform a variety of different functions.
Operational filters are essential component parts of all broadcast and reception systems.
Additionally, due to the proliferation of broadcast systems using the common airwaves, special filters are often required to suppress mutual off-air interference between broadcast systems. For example, special filters are often required to protect a Cable TV system from receiving unwanted and disruptive signals from strong FM stations, Paging services and Cellular and Mobile Radio installations. Emily Bostick and the late Glyn Bostick have been associated with Cable TV since its infancy and with other TV-related industries for 30 years.