6SF7
  • 6SF7
  • 6SF7
Ken-Rad

6SF7

5.00 USD

 Rugged metal diode pentode tubes manufactured in the United States by Ken-Rad. These 8 pin octal based tubes are designed as IF amplifier, detector and AVC rectifier for radio receivers. They are printed in white KEN-RAD MADE IN U.S.A. 6SF7, and coded 3-13 188-4, indicating Owensboro Kentucky production. Base is also stamped 6SF7.  

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

Ken-Rad
25 Items

Data sheet

Base
8 pin Octal
Boite type
1/4
Emplacement
13
Quide
275
Fonction
Diode pentode
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