1 low noise tube) JAN-7308 Raytheon NOS 1968
1 tube) 15.2/10.4ma Gm=12,100 and 10,000
1 tube) 16.8/12.5ma Gm=12,700 and 10,600 slightly offset glass base – see photo
JAN=Joint Army Navy
Good Ma range 12-15ma
Good Gm range 11,000-13,000
7308=Premium low noise 6922
(smooth and quiet)


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