My plan is to use my old Garmin GPS 12 as a frequency standard. As it has no pps (pulse per second) output I am thinking about using the on board oscillator as the clock source. So my question: Is the 16.368 MHz oscillator that is controlled by the big crystal on the circuit board (see image below) "GPS disciplined" and thus has a high accuracy and stability?
Electronic – Is the Garmin GPS 12 on board 16.368 MHz oscillator GPS controlled
frequencygpsoscillatorstandard
Best Answer
The 16.368 MHz oscillator is not GPS disciplined. It serves as the oscillator for the IF stage of the GPS frontend and clock source for its digitized baseband output.