Discrete Low Jitter Clock GB

[andrea_mori]

Pat says he reach such phase noise, not with all of these crystals but with a 20-25%.
He tests all crystals and throw out the rest. Seems he use a simple picogate Pierce oscillator (unbuffered '04).
I cannot confirm that, I don't own the equipment to test phase noise.

He says about Tent clock:
"From his site, -92 dBc @ 10 Hz, for 33.xx Mhz. Subtract 9.5 dB, for 11.2896 MHz. Ok, let's be generous and say it is -103 dBc @ 10 Hz.
I throw out crystals that measure like that."

[Mikewong]

amc184!
PCB at last arrived.
Thank you.

[ekidnah09]

Anton,
Just received my boards they are fantastic.
Thank you
Giovanni

[dtses]

got the boards finally
they are awesome, thanks you, Anton!

I'm curious if I perceive any difference compared to my old valab clocks, but need to install at least one of them first in my T+A 1210.

A quick question, is it ok if I use old crystal with the clock? It's 16.934Mhz, so should be fine I suppose?

[dtses]

tried to connect my old valab clock, but was unlucky yesterday... perhaps I did something wrong or maybe because of the 16.9344Mhz clock frequency. Does it correspond to T+A's 16.934Mhz or these are completely different frequences? Just to mention that I was trying to connect clock to 74hcu04 inverter.

[amc184]

An update for those orders placed after the main groupbuy:

- Ryssen: sent 10/12/2012, arrived 20/12/2012
- mstr: sent 15/12/2012
- ruben058: sent 15/12/2012, arrived 25/12/2012
- UV101: sent 10/12/2012, arrived 22/12/2012
- dtses: sent 10/12/2012, arrived 11/1/2013
- ekidnah09: sent 15/12/2012, arrived 9/1/2013
- yyzz: sent 20/12/2012, arrived 28/12/2012
- andrea_mori: sent 20/12/2012
- randytsuch: sent 17/1/2013
- mikmm: sent 25/1/2013

[j baldam]

Hi
I missed the group buy of kits but Anton has just sent me a board. Thanks Anton.
I have had a quick look at the BOM and found that because of minimum orders I will have to order 100 of some resistors, 25 of some others.
This seems to jack the price up alarmingly.
Have other builders had to order in this way.

[acccruz]

Hi Dear Anton:

Do you still have one Kit for 7 - 20VDC powered version?

Thanks a lot for your reply,
Antonio

[korben69]

Originally Posted by j baldam

Hi
I missed the group buy of kits but Anton has just sent me a board. Thanks Anton.
I have had a quick look at the BOM and found that because of minimum orders I will have to order 100 of some resistors, 25 of some others.
This seems to jack the price up alarmingly.
Have other builders had to order in this way.

Hi

You're right.
When you place an order there's a min. qty order according to each ref. Mouser/Farnell/Digikey mention the min qty order for each part.
Find substitutes : usually they are more expensive but you can order them individually without min qty order.
Resistors aren't the most expensive parts, and I agree with you, there's no need to order 100 units when you only need 2 !
Don't forget that there's also a min amount order, and you'll be charged for shipping/VAT too.
Another option is to find a retailer around
Cruel world

[UV101]

sure but at that quantity you are only talking about less than 1 euro for 100!!!!

RS in the UK can supply in multiples of 10 for 16p (i.e. 1.6p each) I'm not sure you can really improved on that!!

Buy Through Hole Fixed Resistors CFR16 carbon film resistor,47R 0.25W TE Connectivity CFR16J47R online from RS for next day delivery.