Bendix Aviation vacuum tubes

12FX8 BLACK PLATE

8.00 USD

Top of the line triode heptode tubes manufactured in the United States by renowned Bendix. These fine 9 pin miniature glass tubes, designed as triode amplifier and frequency converter in superheterodyne radio receivers, come with black plates and top getters. They are printed in white with BENDIX RADIO logo, MADE IN U.S.A. coded 3224-05-1, and glass etched 12FX8 U.S.A. Boxes are standard Bendix yellow printed 12FX8.

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

Bendix Aviation vacuum tubes
32 Items

Data sheet

Base
9 pin miniature Noval B9A
Boite type
1/3
Emplacement
43
Quide
495
Fonction
Triode heptode

Customers who bought this product also bought: