The oscillator unit MKU LO 8-13 PLL2 was designed as local oscillator source for microwave transverters and covers the frequency range from 8.4 GHz to 13.6 GHz. The oscillator unit covers the frequency range between 54 MHz and 6.85 GHz, also. The user can choose frequencies from a standard frequency list or the user can programm it’s own output frequency in the oscillator unit. The frequency resolution is 1 Hz. Absolute frequency accuracy and stability can be achieved by supplying an external 10 MHz reference frequency. A CW beacon encoder is implemented in the oscillator unit software and so the oscillator can be used a low power stand-alone beacon transmitter.