Source of low phase noise crystals

stolbovoy · 8th April 2005, 07:37 PM

I want to try ECL clock source http://www.lynxaudio.narod.ru/schemes/sch_17.pdf

Where can I buy good 11289.6MHz crystal (one piece order)?

rayfutrell · 8th April 2005, 07:58 PM

Did you misplace the decimal point in that crystal frequency?
Regards,
Ray

stolbovoy · 8th April 2005, 08:19 PM

Quote:

Originally posted by rayfutrell
Did you misplace the decimal point in that crystal frequency?
Regards,
Ray

Yes

. Thanks for noticing.
It should be 11.2896MHz, not GHz

Stocker · 8th April 2005, 09:07 PM

If you want low phase noise, you really should have a look at Wenzel Associates

Jocko Homo · 8th April 2005, 09:45 PM

Crystals are not specified by "phase noise". Crystal Q plays a part in it. As does circuit design and the rest of the parts.

Jocko

stolbovoy · 8th April 2005, 10:18 PM

Quote:

Originally posted by Stocker
If you want low phase noise, you really should have a look at Wenzel Associates

Will they sell single oscillator for 11.2896MHz? I don't need 50 or so of them. I've tried to buy from Raltron and Valpey Fisher distributors - not available in quantities of 1-2 pieces.

Quote:

Originally posted by Jocko Homo
Crystals are not specified by "phase noise". Crystal Q plays a part in it. As does circuit design and the rest of the parts.

Jocko

Excuse my language, I just wrote it after looking at "features" at http://www.icmfg.com/crystal_hc35u.html I hope inflicted damage is not permanent

What is the source of 11.289.6MHz crystals with lowest ESR/highest Q, where is possible to order 1 crystal on reasonable price?

mbcouple · 8th April 2005, 10:26 PM

Maybe: http://www.tentlabs.com/ProductEntities/XO/XO.html

stolbovoy · 8th April 2005, 10:30 PM

Quote:

Originally posted by mbcouple
Maybe: http://www.tentlabs.com/ProductEntities/XO/XO.html

Already ordered, but want to try something different to compare.

Jocko Homo · 9th April 2005, 12:09 AM

The best source is an old Philips CDP. I sent some of their crystals out to a manufacturer once. They spec'ed the Q at around 150K. They were willing to sell me some of theirs..........Q of 175K or so............for molto $$$$ if I was willing to buy a boatload of them.

It is possible to make something close to Guido's if you have the expertise, including a low-noise supply, with an old Philips crystal. I can, but then I have the background in that stuff.

ECL is one way to go. Just rip a crystal out of an old CDP...........it will more than adequate to get started.

(The main problem with those CDPs is the lousy circuit...........stuck inside of the filter chip, not the crystal.)

Jocko

Bricolo · 9th April 2005, 01:00 AM

What does ECL mean?

8th April 2005, 07:37 PM	#1
stolbovoy diyAudio Member Join Date: Jul 2004 Location: MD, USA	Source of low phase noise crystals I want to try ECL clock source http://www.lynxaudio.narod.ru/schemes/sch_17.pdf Where can I buy good 11289.6MHz crystal (one piece order)?

8th April 2005, 09:07 PM	#4
Stocker diyAudio Member Join Date: Dec 2003 Location: Austin	If you want low phase noise, you really should have a look at Wenzel Associates __________________ Jesus loves you.

8th April 2005, 09:45 PM	#5
Jocko Homo Banned Join Date: Feb 2002 Location: As far from the NOSsers as possible	Uh........hate to tell you this, but........ Crystals are not specified by "phase noise". Crystal Q plays a part in it. As does circuit design and the rest of the parts. Jocko

9th April 2005, 01:00 AM	#10
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	What does ECL mean? __________________ Just remember: in theory there's no difference between theory and practice. But in practice it usually is quite a bit difference... Bob Pease

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8th April 2005, 07:58 PM	#2
rayfutrell diyAudio Member Join Date: Sep 2004 Location: virginia	Did you misplace the decimal point in that crystal frequency? Regards, Ray

8th April 2005, 10:26 PM	#7
mbcouple diyAudio Member Join Date: May 2004 Location: Indy	Maybe: http://www.tentlabs.com/ProductEntities/XO/XO.html

9th April 2005, 12:09 AM	#9
Jocko Homo Banned Join Date: Feb 2002 Location: As far from the NOSsers as possible	The best source is an old Philips CDP. I sent some of their crystals out to a manufacturer once. They spec'ed the Q at around 150K. They were willing to sell me some of theirs..........Q of 175K or so............for molto $$$$ if I was willing to buy a boatload of them. It is possible to make something close to Guido's if you have the expertise, including a low-noise supply, with an old Philips crystal. I can, but then I have the background in that stuff. ECL is one way to go. Just rip a crystal out of an old CDP...........it will more than adequate to get started. (The main problem with those CDPs is the lousy circuit...........stuck inside of the filter chip, not the crystal.) Jocko

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