5879 MATCH PAIR TEKTRONIX
  • 5879 MATCH PAIR TEKTRONIX
  • 5879 MATCH PAIR TEKTRONIX
Radio Corporation of America

5879 MATCH PAIR TEKTRONIX

39.00 USD

 World class miniature audio pentode tubes manufactured in the United States by RCA. These 9 pin glass tubes, designed for critical audio applications for microphony, leakage noise, and hum; are tested at manufacture by RCA, then tested, paired by electronics giant Tektronix, and given individual paired serial numbers. They come with triple micas, silvered plates, top getters, and are glass etched 5879 U.S.A. They are printed in red with RCA logo, RCA ELECTRON TUBE MADE IN U.S.A. AF, and boxed in standard Tektronix double boxes printed PART NO. 157-0051-00 SELECTED PR 9M 5879. Price is for two tubes; sold only in pairs.

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

Radio Corporation of America
21 Items

Data sheet

Base
9 pin miniature Noval B9A
Boite type
1/6
Emplacement
46
Quide
552
Fonction
Pentode