VT-49 JAN
  • VT-49 JAN
  • VT-49 JAN
Tung-Sol

VT-49 JAN

13.00 USD

 Fine Mil. Spec. pentode tubes manufactured in the United Ststes by renowned Tung-Sol. These glass shoulder type 5 pin RF or IF amplifier tubes come with black plates, bottom getters and top cap grid. They are glass etched 39 44, and are printed in white on the base VT-49 TUNG-SOL MADE IN U.S.A. Boxes are standard military beige printed SC603A VT-49 U.S. ARMY SIGNAL CORPS ORDER NO. 1747-WFSCPD-42 TUNG-SOL LAMP WORKS INC. NEWARK NEW JERSEY.

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

Tung-Sol
38 Items

Data sheet

Base
5 pin UX5
Boite type
1/2
Emplacement
30
Quide
1330
Fonction
Pentode
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