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56 no name NOS 1950's (5.7ma)

Name: 56 no name NOS 1950's (5.7ma)
Brand: tubeworldexpress.shop
SKU: copy-of-56-rca-no-name-nos-1940s-made-for-radiotelefonica-argentia-5-1ma-1
Price: 12.99 USD
Availability: InStock
Rating: 5 (1099 reviews)

$12.99 $14.99

Tags:

1943 56 all black plate Raytheon Sylvania triode Tungsol

Categories:

Preamp tubes

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Description

56 no name NOS 1950's

5.7ma

Gm=1500

Tested on Amplitrex:

Vplate=250V

Vgrid=-13.5V

Iplate good range = 4.5-5.5ma

Gm=1400

(Vfilament = 2.5 volts)

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56 no name NOS 1950's (5.7ma)

Description

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