71A Cunningham Balloon used/tests like new 1930”s (30ma)

Category: SKU: TOY392776

$18.00 $59.99

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71A Cunningham Balloon used/tests like new 1930”s

30ma

Gm=1900

Tested on Amplitrex

Vplate=180V

Vgrid=-38V

Good Ma = 20ma

Good Gm = 1600-1700

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