RCA vacuum tubes

26D6 JAN

8.00 USD

Top of the line miniature glass heptode tubes manufactured in the United States by renowned RCA. These Mil. Spec. 7 pin pentagrid converter tubes are designed for radio operation from storage batteries. They come with gray plates and top getters, and are printed in red with old style RCA logo, JAN 26D6 with various productiion codes. They are also glass etched JAN 26D6 U.S.A. Boxes are standard military beige with contract number DSA 9-26024 dated 1966, and also NATO coded 5960-188-0987.

Condition

New Old Stock (New in box)

	Tube Matching 6.00 USD by tube
LEARN MORE 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.