Audio-Technica ATW-F948 2-Pack Antenna FilterFEATURES Antenna filter (two per set) for any manufacturer's 946 950 MHz wireless system. Cuts unwanted radio waves emanating from mobile phones and other external RF devices. Passive module; requires no external power source. BNC J (IN) and BNC P (OUT) connectors; 50 ohms; +10 dBm max input.
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