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12H6 JAN
  • 12H6 JAN
  • 12H6 JAN
RCA vacuum tubes

12H6 JAN

9.00 USD
5.00 USD Save 4.00 USD

Top of the line octal-based metal twin-diode tubes manufactured for the US military by RCA, but boxed by Sylvania. Two separate rectifier sections allow flexibility as diode detectors, low drain power rectifiers, or AGC rectifiers. Tubes are low profile, printed JRC 12H6 MADE IN U.S.A. with old style RCA logo, eagle badge, and coded 4-30. Wrapped in heavy duty waxed paper, then boxed in giant brown military boxes labelled USAF STOCK NO. 3300-234-950-000 PART NO. 2J12H6 ITEM NO. 1-265 CONTRACT NO.AF33-600-23261 METHOD 111 DATE SEPT 54 SYLVANIA ELECTRIC PRODUCTS INC. BUFFALO N.Y.

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

132 Items

Data sheet

Base
8 pin Octal
Boite type
3/2
Emplacement
18
Quide
1188
Fonction
Double diode
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