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2 x EF86 6267 Rare Mullard Blackburn NOS absolutely matched pair (2 pieces)
2 x EF86 6267 Rare Mullard Blackburn NOS absolutely matched pair (2 pieces)

2 x EF86 6267 Rare Mullard Blackburn NOS absolutely matched pair (2 pieces)

$ 78.67

Availability: 100 in stock
  • Brand: Mullard Blackburn
  • Type: Vacuum Tube
  • Condition: New
  • Country/Region of Manufacture: Russian Federation
  • Model: EF86 6267
  • All returns accepted: ReturnsNotAccepted

    Description

    2 x EF86
    Mullard
    absolutely matched paar (2 pcs.
    ) NOS.
    July 1959 Blackburn made early long mesh version, square getters, clean straight pins and clear printing. Both tubes have same production codes:
    Tube 1
    9r1
    B9G
    Tube 2
    9r1
    B9G
    Measuring data:
    Ia1 = 3,3 mA
    Ig2 =
    0.6 mA
    S = 2.9 mA/V
    Tube 2
    Ia1 = 3,3 mA
    Ig2 =
    0.65 mA
    S = 2.88 mA/V