Would you please post details about the Clapp oscillator and the measuring setup?
Thanks,
Reg
On Thursday, November 26, 2020, 09:00:49 AM CST, Harke Smits via groups.io <yrrah53@...> wrote:
On Wed, Nov 25, 2020 at 05:16 PM, Reginald Beardsley wrote:
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
Hello All,
Very interesting response! I use cheap crystals indeed and I am just curious how special made ones perform. I like the link by Reginald, though my PNTS is a little less elaborate.?
My PNTS is based on articles by Bernd Kaa in UKW Berichte 4/2015,1/2016,2/2016 and many stuff on the internet. I m working on a series of articles in Dutch for our national magazine at present.?
The attachment gives you an impression of its capabilities.
To be continued, I guess.
Best regards,
Harke
