5U4GB HALO GETTER
  • 5U4GB HALO GETTER
  • 5U4GB HALO GETTER
Marconi

5U4GB HALO GETTER

33.00 USD

Fine full wave rectifier tubes manufactured by Marconi in USA or Canada. These glass 8 pin octal based tubes have two thick mica spacers, black plates, and double top side getters. They are glass engraved 5U4GB, and printed in red or white MARCONI RADIOTRON with variable codes.  

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
Last items in stock

Marconi
1 Items

Data sheet

Base
8 pin Octal
Boite type
1/1
Emplacement
SS
Quide
1522
Fonction
Full-wave rectifier
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