6BL7GTA GE gray plates NOS 1974 (47/53ma)

6BL7GTA GE gray plates NOS 1974 (47/53ma)

By Tube World

$ 9.99

1 tube) 6BL7GTA GE gray plates NOS 1974 (MI)

1 section) 47ma Gm=7500

1 section) 53ma Gm=7100

Tested on Amplitrex


Recommended for

- Single Power MPX3 SE
- Cary 1610se

(Vfil=6.3V @ 1.5A, Vplate max=500V, Iplate max=60ma, Pout max = 12 watts total for both triode sides)
The 6BL7GTA is interchangeable with a 6BL7GT but differs from it in having
an improved section 1 for increased life as an oscillator, and controlled zero-bias
plate current in both sections
Typical Characteristics Class A Amp:
Vplate= 250V
Iplate= 42ma
Vgrid= -9
Rp= 2150 ohms
Mu= 15
Gm= 6200 for 6BL7 (RCA manual 1953) and 7000 mhos for 6BL7GTA (GE Manual 1957)


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