955 JAN
  • 955 JAN
  • 955 JAN
Sonotone

955 JAN / VT-121

9.00 USD

Tough Mil. Spec. miniature glass acorn type tubes manufactured in the United States by Sonotone Corporation. These amazing tubes may be used as AF or RF detectors, amplifiers or oscillators up to UHF. They are printed in white with Sonotone logo, JAN-955 VT-121 MADE IN U.S.A. Boxes are miniature military beige printed U.S. ARMY U.S. NAVY STOCK NO. 2J955 S.C. ORDER 27085-PHILA-44-12 ACCEPTED DEC 2 1944.

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

Sonotone
18 Items

Data sheet

Base
Acorn
Boite type
1/1
Emplacement
44
Fonction
Triode
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