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(!!) 7247=12DW7 GE branded Tungsol tall gray ribbed plates used/good 1960 era (1.0ma and 7.8ma)
(!!) 7247=12DW7 GE branded Tungsol tall gray ribbed plates used/good 1960 era (1.0ma and 7.8ma)
$ 29.99
7247=12DW7 GE branded Tungsol tall gray ribbed plates used/good 1960 era "U" getter
12AX7 Section = 1.0ma Gm=1500
12AU7 Section = 7.8ma Gm=1700
Tested on Amplitrex
12AX7 Section NOS Good = 1-1.2ma Gm=1500-1600
12AU7 Section NOS Good = 8-10ma Gm=1800-2200
See more: vacuum tube
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