-40%
Lot of 4 matched Svetlana SED 6550B tubes
Lot of 4 matched Svetlana SED 6550B tubes

Lot of 4 matched Svetlana SED 6550B tubes

$ 31.15

Availability: 100 in stock
  • Brand: Svetlana
  • Model: 6550B
  • Type: Vacuum Tube
  • Condition: These tubes have unknown hours of use. They have been tested at 500V settings on an AT1000 tester. Results range from 71.0 - 74.2 mA for current draw and 7000 (106%) - 7400 (115%) Gm for transconductance. Each tube ships with test results (see photos). Previous test results are written on the base of each tube. Very nice lot.
  • All returns accepted: ReturnsNotAccepted
  • Country/Region of Manufacture: Russian Federation

    Description

    The 4 Svetlana 6550B tubes in this lot
    have dual top getters. They are labeled “6550 B Made in Russia” with the OTK factory code etched in the glass.
    These tubes have unknown hours of use. They have been tested at 500V settings on an AT1000 tester. Results range from 71.0 - 74.2 mA for current draw and 7000 (106%) - 7400 (115%) Gm for transconductance. Each tube ships with test results (see photos). Very nice lot.
    Each tube ships packed with the test results shown in the photos.