5A/152M

28.00 USD

Top of the line Mil. Spec. amplifier tubes manufactured for the Armed Forces by renowned International Telephone and Telegraph in England. These amazing glass pentode 8 pin loctal based tubes, designed as low distortion amplifiers for telephone service, come with top halo getters and chrome tops. They are printed in blue ITT 5A/152M MADE IN ENGLAND and coded 7783. Boxes are standard military white marked STC 5A/152M.

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.