Eimac

7203 JAN / 4CX250B

229.00 USD

Mil. Spec. original 1984 production tetrode tubes manufactured for the Armed Forces in the United States by renowned Eimac. These tough transmitting tubes come with metal cooling fins and ceramic and metal 8 pin loctal base. They are printed with Eimac logo, 4CX250B JAN-7203 MADE IN U.S.A. and coded 06980 8449. They come in sealed military green cans NATO coded 5960 00 935 4981.

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

Eimac
17 Items

Data sheet

Base
8 pin Loctal
Boite type
1/1
Emplacement
04
Fonction
Tetrode
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