5686 5 STAR
  • 5686 5 STAR
  • 5686 5 STAR
General Electric (GE)

5686 5 STAR

8.00 USD

 Unbeatable 5 star 9 pin miniature glass pentodes manufactured in the United States by General Electric.These tough tubes, designed for aircraft or mobile operations, are for Class A audio power or Class C RF power amplification. They have black plates and top halo getters, and are printed in green with GE logo 5686 ***** MADE IN U.S.A. and glass etched 5686 U.S.A. with dot code. Boxes are standard orange and gray GE printed 5686.  

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

General Electric (GE)
45 Items

Data sheet

Base
9 pin miniature Noval B9A
Boite type
2/4
Emplacement
45
Quide
675
Fonction
Pentode