Various manufacturer

5727 / 2D21W JAN

14.00 USD

Best on the market Mil. Spec. thyratron tubes manufactured for the Armed Forces in the United States by various makers. These top quality miniature glass tubes, 1950's to 1970's production, are gas filled, and are designed for aircraft and mobile operations. They come with gray plates and top getters, are glass-etched, and have different makers markings. Boxes are standard military beige, gray or brown printed JAN 5727/2D21W. Photo is typical of available inventory.

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

Various manufacturer
25 Items

Data sheet

Base
7 pin miniature B7G
Boite type
1/1
Emplacement
33
Quide
521
Fonction
Thyratron