291A Western Electric NOS 1972 (42/25)

Name: 291A Western Electric NOS 1972 (42/25)
Brand: Tube World
SKU: 291a
Price: 89.0 USD
Availability: InStock

$ 89.00

1 tube) 291A Western Electric NOS 1972 (42/25)

Tested on TV-7D/U

General Info

Pentagrid converter with cathode

10V Filament

Vplate=180V

Vgrid1=-7.5V

Vgrid2=180V

Vgrid3=75V

Vgrid4=-3V

Vgrid5=75V

Mu=275

Gm=690

Rp=400Kohms

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