Profile: FM Systems, Inc. designs and manufactures superior program audio subcarrier and single channel per carrier modulators & demodulators for microwave and satellite transmission facilities. We also offer audio & video test equipment, data transmission equipment, closed circuit television equipment, and operating equipment for the broadcasting industry. Our products include video privacy mask, automatic picture rejuvenator, automatic picture rejuvenator with dual video output, digital stereo audio level master, and ethernet expander.