1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS

1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS
1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS
1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS
1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS
1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS
1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS
1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS

1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS
Model: 1966 Mullard EL34 6CA7 (Made in the United Kingdom). Date codes: Xf2 B6L2 Xf2 =. Mullard EL34, B = Blackburn, 6 = 1966, L = December, 2 = Week 2 of production month.

GM (Mutual Conductance) test result. This set was tested and certified by. RoeTest V11 Professional Tube Testing System. Measured transconductance (GM): 8.25/8.12 mA/V - 125%/123% (100% = 6.60 mA/V).

Measured plate current (IA): 145.29/132.77 mA - 145%/133% (100% = 100 mA). NO shorts, leakage or gas. Curve trace is also included in the original RoeTest report.


1x Mullard EL34 6CA7 Double O Getter Blackburn 1966 Test NOS