3D6 / VT-185 JAN
  • 3D6 / VT-185 JAN
  • 3D6 / VT-185 JAN
Sylvania

3D6 / VT-185 JAN

12.00 USD

 Glass loctal based tubes manufactured for the military in the United States by Sylvania. These pentode amplifier tubes for mobile radio operations, with black plates and top getters, are printed in green JAN CHS 3D6 / 1299 MADE IN U.S.A. SYLVANIA and glass etched on top 3D6 A6E. They are boxed in standard beige military boxes printed STOCK NO. 2J3D6/1299 ORDER NO. 3110-PH-55-59 (31) FSN NO. 5960-188-8614 DATE PACKED 3-56.

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

Sylvania
21 Items

Data sheet

Base
8 pin Loctal
Boite type
1/2
Emplacement
04
Quide
90
Fonction
Tetrode
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