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(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.8ma and 1.8ma)

(!!!) (Recommended PAIR 1953) JAN-CW-231D Western Electric NOS 1953 (1.8ma and 1.8ma)

$ 169.99

1 pair) JAN-CW-231D WE NOS yellow printed bases original boxes 323=1953

1 tube) 1.8ma Gm=500 (323=1953)

1 tube) 1.8ma Gm=500 (323=1953)

 

Tested on Amplitrex

Vplate=90V

Vgrid=-3V

Good Ma = 1.5-2.1ma

Good Gm = 400-500

 

General Information

3V Filament @ 60ma, Vplate=90V, Iplate=2.1ma, Mu=8.4, Gm=510, Rp=16Kohms, Pout=4.5mW

Similar to UV-199 and 864

 

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