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56 Philco by Sylvania used/good 1940's (5.2ma) Image 1

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56 Philco by Sylvania used/good 1940's (5.2ma)

Name: 56 Philco by Sylvania used/good 1940's (5.2ma)
Brand: tubeworldexpress.shop
SKU: copy-of-56-super-airline-used-good-1940s-4-1ma
Price: 8.00 USD
Availability: InStock
Rating: 5 (994 reviews)

$8.00 $9.99

Tags:

1943 56 all black plate National Union Super Airline Sylvania triode Wards

Categories:

Preamp tubes

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Description

56 Philco by Sylvania used/good 1940's

5.2ma

Gm=1300

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 Philco by Sylvania used/good 1940's (5.2ma)

Description

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