Siemens

6AQ8 / ECC85

52.00 USD

Top quality twin triode amplifier tubes manufactrued in Germany by renowned Siemens. These fine miniature glass 9 pin tubes, designed for service as RF amplifier and mixer in AM/FM radio receivers, come with gray plates, thick mica spacers, and top halo getters. They are printed in white SIEMENS ECC85, and coded 582. They come in standard yellow and blue Siemens boxes date coded 1983, NATO coded 5960-12 124-6587, and printed ECC85 6AQ8.

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

Siemens
20 Items

Data sheet

Base
9 pin miniature Noval B9A
Boite type
1/3
Emplacement
50
Quide
260
Fonction
Double triode
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