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(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.7ma)

(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.7ma)

$ 16.99

UY-227 RCA Radiotron Balloon used/good 1930 era

3.7ma

Gm=800

 

Tested on Amplitrex

Vplate=250V

Vgriod=-21V

NOS Ma = 4.6-5ma

NOS Gm=900

See more: vacuum tube
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