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71A Raytheon 4-Pillar box-plate used/strong 1930's (24.8ma) Image 1

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71A Raytheon 4-Pillar box-plate used/strong 1930's (24.8ma)

Name: 71A Raytheon 4-Pillar box-plate used/strong 1930's (24.8ma)
Brand: tubeworldexpress.shop
SKU: 71a-raytheon-4-pillar-box-plate-used-good-1930s-24-8ma
Price: 33.99 USD
Availability: InStock
Rating: 5 (1870 reviews)

$33.99 $39.99

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1940's 71A National Union

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Power Tubes

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Description

71A Raytheon 4-Pillar box-plate used/strong 1930's engraved base

24.8ma

Gm=1600

SINGLE TUBE, NOT A PAIR

Tested on Amplitrex

Vplate=180V

Vgrid=-38V

Good Ma = 20ma

Good Gm = 1600-1700

(71A=5V @ .25A Filament)

Mu=3

Rplate=1.82Kohms

Rload=3Kohms

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71A Raytheon 4-Pillar box-plate used/strong 1930's (24.8ma)

Description

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