Re: XTAL parameters for measurement receiver



I forgot to mention that the crystals were really cheap when I bought them in a local store which is not very well supplied.

I don't know why this frequency was selected for the MS but it might be due to its abundance.  I don't know for what they are supposed to be.

73 de Ignacio EB4APL

El 06/06/2016 a las 2:55, 'Steve Dick' sbdick@... [PHSNA] escribió:

Thanks very much Ignacio. Really appreciate the data.
“Digital Steve”, K1RF
Sent: Sunday, June 05, 2016 2:02 PM
Subject: Re: [PHSNA] XTAL parameters for measurement receiver [1 Attachment]


I have measured a bunch of 12 crystals that I bought for the MR, I attach the results.

73 de Ignacio EB4APL

El 05/06/2016 a las 13:47, sbdick@... [PHSNA] escribió:

If anyone has measured crystal parameters for the 3276.8 KHz crystals used in the measurement receiver (ECS part number ECS-32-17-1X) I would appreciate it (Rs, Lm, Cm, Q). I was thinking of buying a bunch of extras for making some experimental filters. I'm particularly interested in the Rs or Q that people are seeing.  The Rs looks fairly high from the data sheet at 120 ohms which is typical for low cost crystals.  Have your crystals been running at the high end for the ESR or are they really much better?  (or if you have Q values that would be helpful)

"Digital Steve", K1RF

Posted by: sbdick@...

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