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Keywords: RJ-557 Amplifier Tube, Westinghouse - National Electronics Museum - DSC00168.JPG en Exhibit in the National Electronics Museum 1745 West Nursery Road Linthicum Maryland USA All items in this museum are unclassified The museum permitted photography without restriction 2014-07-21 14 40 09 own Daderot cc-zero Uploaded with UploadWizard Vacuum tubes in the National Electronics Museum Westinghouse vacuum tubes |