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71A_Philco_used_good_1930_s_18_5ma

71A_Philco_used_good_1930_s_18_5ma

(!!) 71A Philco used/good 1930”s (18.5ma)

Category: vacuum tube SKU: TOY392782

$7.50 ~~$24.99~~

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71A Philco used/good 1930”s

18.5ma

Gm=1700

Tested on Amplitrex

Vplate=180V

Vgrid=-38V

Good used mA = 18-20mA+

Good used Gm = 1500-1700

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