Title
Vacuum tube type 2D21Catalog Number
102729017Type
Physical objectDescription
Both tubes have 7 connector pins. The RCA logo and "MADE IN THE U.S.A." are printed in white on the side.Manufacturer
Radio Corporation of America (RCA)Place Manufactured
U.S.Identifying Numbers
| Other number | JRC 2D21 | Printed in white on side of tube |
| Part number | 2D21 | Printed in grey on side of tube |
Dimensions
overall: 2 1/8 in x 3/4 in x 3/4 inCategory
Component/vacuum tubeLot Number
X1040.90