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AD1 Valvo Wehrmacht NOS/NIB Vintage Power Triode.




Item History & Price

Information:
Reference Number: Avaluer:29705303Country/Region of Manufacture: Germany
Brand: ValvoType: Direct heated power triode
UPC: Does not apply
Original Description:
A very scarce perfect AD1 directly heated power triode in original boxe. Made during WW2. Marked Wehrmacht. Been in my collection for decades. Perfect tube, never used. Test little stronger than100 % on AVOmk.4.  No gas, electricalleakage, short or loose elements. Va= 250 V  Vg= -45 V  Ia= 60 mA  S= 6 mA/V
A perfect AD1 vintagepower triode which is very difficult to find in this condition.It is mentioned in the book: “Top-Sounding VintagePow...er Tubes” by Stereo Sound, Japan. Near RE604 PX4 PX25 NT40 DET5 45VT-52 2A3 WE300B WE252A Ed Da 4683


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