Artifact Details Title Vacuum tube, 12AT7WA Catalog Number 102766338 Type Physical Object Description The 12AT7 is a high-mu twin triode. The miniature type is used as a push-pull cathode-drive amplifier or frequency converter in the FM and television broadcast bands. Manufacturer Radio Corporation of America (RCA) Place Manufactured U.S. Identifying Numbers Model number 12AT7WA Other number 6201 On the side of the tue. Other number 6539 On the side of the tue. Dimensions overall: 2 1/8 in x 3/4 in x 3/4 in Category Component/vacuum tube