A-40. To reduce the effects of filament bombardment.
A-41. Rising-sun block.
A-43. Working electrons.
A-44. Greater power output.
A-45. Loops and slots.
A-47. A cookie-cutter tuner.
A-48. Baking in.
A-49. The tunneling action.
A-50. The tuned circuit or cavity frequency.
A-51. To increase the stability.
A-52. Prevent feedback to the tuned input circuit.
A-53. Stability problems.
A-54. Variable capacitor.
A-56. The low-noise characteristic.
A-57. By varying the amount of capacitance in the circuit.
A-58. Supplies the electrical energy required to vary the capacitance.
A-59. Exactly double the input frequency.
A-60. The pump signal of a nondegenerative parametric amplifier is higher than twice the input signal.
A-61. Idler- or lower-sideband frequency.
A-62. The sum of the input frequency and the pump frequency.
A-63. Larger microwave power outputs.
A-64. The electrons become immobile.
A-66. A field of much greater intensity.
A-67. The frequency.