本专利介绍一种 AN/PRC/77型无线电收发机所用的变频振荡器,在41.50～64.50兆赫频率范围内,可机械粗调到相互间隔为1兆赫的频带上。在1兆赫的频带内有20个相隔50千赫的信道,振荡器可精调到其中任一个信道。本专利的原理也可应用到其他类型的变频振荡器上,如分立增量调谐,压控调谐型等。以 AN/PRC/77为例详述了具体装置。 This patent describes a variable frequency oscillator for use with AN / PRC / 77 radio transceivers that can be mechanically coarse tuned to a frequency band of 1 MHz apart from the 41.50 to 64.50 MHz frequency range. In the 1 MHz band there are 20 channels separated by 50 kHz and the oscillator is fine tuned to either channel. The principles of this patent can also be applied to other types of variable frequency oscillator, such as discrete incremental tuning, voltage-controlled tuning and so on. Take AN / PRC / 77 as an example to detail the specific device.