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  • (!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.5ma)
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(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.5ma) Nav Image 1

(!!) UY-227 RCA Radiotron Balloon used/good 1930 era (3.5ma)

$12.99 $14.99


Tags:

1930's 227 27 Balloon Cunningham Fada preamp tubes RCA Tungsol UY-227


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Preamp tubes
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  • Description

UY-227 RCA Radiotron Balloon used/good 1930 era

3.5ma

Gm=700

 

Tested on Amplitrex

Vplate=250V

Vgriod=-21V

NOS Ma = 4.6-5ma

NOS Gm=900

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