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Re: Crystals


 

ROFL!!!!!!!!!!!!!!!!!!!!!!!!!!

I just sent this link to a friend:

http://www.aholme.co.uk/PhaseNoise/Main.htm

and the next thing I see is this message.

Have Fun!
Reg

On Wednesday, November 25, 2020, 07:03:45 PM CST, Daniel Ricardo Perez via groups.io <danyperez1@...> wrote:


Dear Harke:
Not everyone has the means to measure phase noise! Could you please share the link from where you built it?
73!
Daniel Perez LW1ECP


25 de noviembre de 2020 12:34:22 ART, Harke Smits via groups.io <yrrah53@...> escribi¨®:
Hello Dennis,
Many thanks for your interesting contribution. I am working on a couple of low noise crystal oscillators actually, at 14.0 and 100.0 MHz, and I use crystals of unknown origin at this moment. So I asked for a quote of some crystals in Czech Republic and I am curious how they will perform.?
With respect to oscillator noise spectra: the crystal is dominant near the carrier, the rest of the circuit further away. I use fets in both circuits. I have a homemade Phase Noise Test Set that is calibrated against a R&S FSWP instrument. In case of interest I can report back here.
Best regards, Harke

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