(!!!) (BEST OVERALL PAIR) 6HF5 GE branded RCA NOS 1960's (132ma and 134ma)
$89.99
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1 pair) 6HF5 GE branded RCA NOS 1960's 1 tube) 132ma and Gm=10,600 1 tube) 134ma and Gm=10,650 Tested on Amplitrex Vplate=175V Vscreen=125V Vgrid=-25V Good Ma range 90-125ma Good Gm = 9,000 - 11,000 - Diathermy machine built by Mettler Electronics
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