• Out-of-Stock
General Electric (GE)

7370 JAN

9.00 USD

Fine general purpose double triode tubes manufactured in the United States for the Armed Forces by renowned General Electric. These 9-pin miniature glass tubes, identical to 5687 except for heater current and voltage, come with black plates and top halo getters. They are printed in green with GE logo, ELECTRONIC TUBE, with Owensboro Kentucky 1970's production codes, and are also glass-etched 7370. Boxes are standard military beige or white printed GE 7370, and NATO coded 5960-00-819-1153 under contracts DSA 900-73-C-1388 or DSA 900-75-A-0055-0017. 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
Out-of-Stock

General Electric (GE)

Data sheet

Base
9 pin miniature Noval B9A
Boite type
1/1
Emplacement
48
Fonction
Double triode