Various manufacturer

6CG7 / 6FQ7

26.00 USD

Budget priced double triode miniature tubes manufactured by various makers in different countries of origin. These fine 9 pin glass tubes come with gray or black plates, and getters in various positions. Designed for television receiver service, they may serve as amplifiers, and with different makers markings, they are boxed in standard boxes.

Condition

Tube Matching
Tube Matching
6.00 USD 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

127 Items

Data sheet

Base
9 pin miniature Noval B9A
Boite type
2/2
Emplacement
38
Quide
2973
Fonction
Double triode
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