I might have misremembered what I read. I am mainly interested in GPSDO (GPS disciplined oscillators) to try and achieve very accurate frequency references. Oscillator aging is affected by drive level - more drive = quicker aging (there are many references to this). In my mind I translated that to more drive = more stress. However the level of stress may not affect day to day performance so I'm most likely on the wrong track. When I started looking at building a GPSDO (some years ago now) I read quite a bit about building oscillators and in the end buying an ovenised voltage controlled oscillator off the shelf seemed like the easiest path.Never heard of that phenomenon. Can you cite any references?
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