18045 SQ GOLD PIN
  • 18045 SQ GOLD PIN
  • 18045 SQ GOLD PIN
Philips

18045 SQ GOLD PIN

16.00 USD

Special Quality gold-pin miniature glass pentodes manufactured in Holland by renowned Philips. They have two thick copper posts, shiny mesh plates, and top disc getters. These beautiful 9-pin output pentodes are designed for 10,000 hour long-life telephone equipment, and are also subjected to up to 500g shock acceleration, and 50Hz vibration tests for 96 hours. Printed in white PHILIPS 18045 SQ SPECIAL QUALITY 18045, NB tubes are in 100 trays, and NOS tubes are boxed in standard Philips yellow, red and blue boxes printed 18045.

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
44 Items

Data sheet

Base
9 pin miniature Noval B9A
Boite type
1/1
Emplacement
48+1
Quide
2791
Fonction
Pentode
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