Designed for applications critical as to leakage under high humidity. New old stock * New In Box * No longer available for export. MFR: GE, Sylvania SKU: 1P40
Features high transconductance, high power sensitivity, and low interelectrode capacitances. It can deliver relatively large output voltages with low values of plate-supply voltage and plate load resistance.
MFR: GE, Philips ECG, Triad, Raytheon, Realistic, Magnavox, Emerson, Curtis Mathes, CBS, Amperex, Westinghouse, Tung-Sol, Philco, Zenith, RCA New old stock * No longer available for export SKU:12BY7A/12BV7
All tubes new, military equipment and have "OTK" mark. Near equivalent: 837 and PK44. The tube is manufactured by Foton, Tashkent, Kazakhstan (new factory is Ulyanovsk).
New Old Stock * No Longer available for export MFR: VSI (Russia) SKU: 837