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45 National Union ST-14 NOS printed base 1940's (25ma)

45 National Union ST-14 NOS printed base 1940's (25ma)

By Tube World

$ 129.99

45 National Union ST-14 NOS printed base

25ma

Gm=2060

SINGLE TUBE, NOT A PAIR

 

Tested on Amplitrex

Vplate=275V

Vgrid=-54.8V

Good NOS ma 30-35ma

Good NOS Gm 2000

 

Recommended for

Tektron

Deja Vu

Victor RE-36 1929

DIY

 

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