100 MHz third overtone crystal oscillator

100 MHz third overtone crystal oscillator @ DIYfan:

Couple of years ago I purchased from a local store 100 MHz crystal resonator and tried several times to make a working schematic on breadboard using standard circuits I found on the internet. It never worked good enough, usually oscillating at 33.3 MHz instead of 100 MHz. Finally, I found that the crystal is third overtone type.

from Dangerous Prototypes https://ift.tt/2OcIRm8