6AC7 / VT-112 USN JAN

10.00 USD

6.00 USD Save 4.00 USD

Rare vintage octal based pentodes manufactured in the United States for the US Navy by RCA. These fine metal pentode tubes are designed for high-gain amplifier circuits. Tubes are printed CRC 6AC7 U.S. NAVY, and boxed in old style red and black RCA boxes printed U.S. NAVY CRC 6AC7 VACUUM TUBE, and overprinted ITEM 91 U.S. NAVY CRC 6AC7 CONTRACT 82178 ACCEPTED APRIL 1943.

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.