Details
New old stock 7 pin miniature sharp cutoff pentode. Various brands. Type 6676 is selected for mobile service (steady output at 6.3V +/- 1.3V).
NSN/FSN = 5960001034019, 5960001076066, 5960002305307, 5960005012933, 5960005431139, 5960005576368, 5960005819074, 5960007020106, 5960007525861, 5960008127740, 5960008229222, 5960008371276, 5960008489094, 5960008595059, 5960008992131, 5960009526165 (6676), 5960010591631
HP/Agilent Number = 1923-0028. 1923-0062, 1923--0091, 5080-0621, 5080-4653, 5080--535
Tektronix Number = 154-0030-00