CV2381 / N1034A backward wave oscillator
This is an S-band backward wave oscillator.
The output terminal and metalwork are intended to be operated at earth potential.
(a) The heater voltage shall be applied at least two minutes before the HT voltages are applied
(b) The delay line voltage must always be applied before the anode voltage
(c) The delay line and collector are connected internally so 'delay line current' includes collector current
(d) For normal operation the grid is set at zero volts. Oscillations are cut off at Vg=100
(e) The magnetic field required to focus the electron beam is provided by a permanent magnet. External magnetic fields or ferro-magnetic objects might distort the focussing field and cause issues such as noise and modulation. Magnets or ferrous objects should be kept at least 8 inches away; 18 inches if low noise output is required.
(f) The temperature at any point on the external surface should not exceed 200°C. Minimum air flow directed onto the radiating fins and side of the valve should be 20 cubic feet per minute
(g) The valve is tuned by varying the delay line voltage. 150V gives 2400MHz and 1170V gives 4500MHz.
(h) The base is rigidly attached to the metal shell. The pins must be connected by flexible leads
This file was last modified23:10:22, Wednesday February 23, 2022