My CTC-16XL Project.

[Yamamaya42]

Originally Posted by Electronic M

Given the barberpoling pictures I've seen you post I'm fairly certain your meter is giving you an incorrect reading. If the waveform is not a linear sine wave it is easy for a digital counter to register some multiple of the true freq.

If you have an oscilloscope I'd use that to check the freq if I got a reading that out there.

https://imgur.com/SZOb74Z
https://imgur.com/DQml4WL
the sign wave is very stable, it's here that I wish i had the digital o-scope that I use at work, which has Freq readings.
I know ( have read how to find freq on an analog scope) , but I am very bad with numbers...
i really cant tell with any detail what freq that is :/

edit.
I can't SEE any drift of the sign wave via the scope, it does not mean there is none, my scope is not been calibrated since i got it, but its a very good one, so i trust it. I nearly wet myself when I looked up the value. (Tektronix 7934 Mainframe only − 2019 value: $29,370)
I guess Like I mentioned, I will start with the caps, but I have heard from sources that the crystal can be suspect, but I don't know to what degree.