1963 Telefunken AC701K Triode Vacuum Tube – Vintage Original ’63 Working, Fully Tested w/ Complete Spec Sheet Microphone Tube Mic AC 701 K (U4013100)
Share this:
– For your consideration is vintage 1963 Telefunken AC701K triode vacuum tube.
– TUBE INFO: Model – AC701K, Date Code – U4013100, Mfg. – Ulm, West Germany, Date – Nov 1963, System – Triode
– TEST SETTINGS: Filament (V) – 4.3, Bias Volts (V) – 1.9, Plate Voltage (V) – 65, Heater Current (mA) – 106
– TEST RESULTS: Transconductance (𝜇Ω) – 2220, Nominal GM (𝜇Ω) – 2400, Minimum GM (𝜇Ω) – 1680, Plate Current (mA) – 1.83, Shorts – None, Life Test – 93%, Gas Test – O.K. Test performed on Hickok 539B. June 18, 2021
– Please scroll through the entire gallery to view the 9 images available. All photos are of the actual tube.
– Worldwide shipping available: please inquire for an accurate quote. International buyers please send an email prior to purchase.
– All purchases made through our site include both tax (ALL taxes included) and free domestic shipping!
If you have something like this, and you’re interested in finding out more or potentially selling yours, please click here.
