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Brimar vacuum tubes

6BW7 BLACK PLATE

$12.00

Quality RF pentode miniature glass tubes manufactured in England by renowned Brimar. These 9 pin amplifier tubes, designed for television receiver service, come with black plates and top halo getters. They are printed in white BRIMAR 6BW7 MADE IN ENGLAND B.V.A. (British Valve Association). Boxes are standard Brimar red and yellow printed 6BW7.

Condition

Tube Matching
Tube Matching
$6.00 by tube

WHY ?

A tube may have one, two, or three internal sections depending on the purpose of the tube; somtimes these sections are all the same, sometimes they are different. Due to manufacturing and material tolerances, there may be slight differences between the original specification and the actual tube. Tube matching tests each one of these internal sections and selects tubes, compared to original specifications at manufacture, for balanced performance and good sound.

HOW ?

All our tubes are tested by us prior to packing on our Stark, AVO, Simpson or RF Laboratories Inc. calibrated testers. On request for tube matching, tubes are matched for Mutual Conductance in Micromhos and Plate Current in Milliamps on our Amplitrex or Radioelec Duovac testers, with results printed for each  individual tube. Certain tubes difficult to test are matched for Mutual Conductance in Micromhos only on one of our regular calibrated testers. On request we can also test for Microphonics.

Quantity

6BW7 BLACK PLATE (nos)
14 Items

Data sheet

Base
9 pin miniature Noval B9A
Boite type
1/1
Emplacement
35
Fonction
Pentode
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