QQZ03/20 GOLD PIN
  • QQZ03/20 GOLD PIN
  • QQZ03/20 GOLD PIN
Philips

QQZ03/20 GOLD PIN

19.00 USD

Mint from trays, gold pin double tetrode tubes manufacured in United States by world renowned Philips. These fine 9-pin tubes, with quick heating cathodes, and internal neutralisation, are designed as RF amplifiers, frequency multipliers, or modulators, in mobile radio communications equipment. They have gold-plated pins top and bottom, thick glass enveloppe, bottom D-getters, and gray plates. They are printed in white PHILIPS YL1020, coded E6A 181, wrapped in soft paper roll, and boxed in standard white boxes.

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

Philips
25 Items

Data sheet

Base
9 pin Compactron Novar
Boite type
1/1
Emplacement
28
Quide
975
Fonction
Double tetrode