RigExpert Tokenblauser GPSDO

The Tokenblauser is a laboratory-grade GPS disciplined clock source with very low noise output, suitable for QO-100 and SHF applications, including operating FT8 and other narrow band digital modes. 

Unlike many other GPSDOs with fixed 10 MHz output, it additionally generates up to four arbitrary frequencies simultaneously. This functionality is provided “out of the box” and does now require advanced skills from the user. Just apply power to the device and connect a GPS antenna, then enter or change output frequencies. 

However, we designed the Tokenblauser to be also a versatile platform for experimenters. The device is Arduino-compatible, and the firmware is open-source. With no or minimal changes in the code or in the hardware, an advanced user may: 

• Connect the GPSDO to a computer for debug purposes or data processing (such as plotting ADEV/MDEV graphs);
• Modify the firmware to experiment with different PLL and FLL algorithms;
• Use own GPS modules and GPS antennas;
• Use different types of OCXOs and Rubidium oscillators.