Vacuum Tube - 2-01C, Rectifier
New-Old-Stock (NOS) tube. The 2-01C is a small, closely spaced, low-capacitance, high-vacuum diode designed for use through ultra-high frequencies. In measurement work, it is well suited to mounting in a probe and will maintain accuracy in the order of plus/minus 1 decibel up to 700 megacycles. It is useful as an indicator at frequencies as high as 3000 megacycles. The 2-01C has a maximum d-c current rating of 1.0 milliampere and a maximum peak inverse voltage rating of 1000 volts. Cooling is by convection and radiation.