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The Well Tempered Master Clock - Group buy
The Well Tempered Master Clock - Group buy
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Old 25th May 2016, 10:31 PM   #1
andrea_mori is offline andrea_mori  Italy
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The Well Tempered Master Clock - Group buy
Default The Well Tempered Master Clock - Group buy

Almost two years ago I started a thread to investigate the opportunity for a diyer to build a real low jitter oscillator.

Nowadays a couple of GB have already gone, but since it seems there is still enough interest, to keep the discussion tecnical only on the main thread, I decided to start a separate thread for the group buy.

You can find every technical detail and related discussion on the master thread at http://www.diyaudio.com/forums/digit...scillator.html

Available parts, prices and Order Form in post #264

Last edited by andrea_mori; 27th February 2018 at 01:40 PM. Reason: New order form
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Old 25th May 2016, 11:41 PM   #2
andrea_mori is offline andrea_mori  Italy
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The Well Tempered Master Clock - Group buy
Default Available parts

Following the list of the available parts and their prices.

Laptech crystals AT-Cut and SC-Cut in HC-43/U cold welded package

TWTMC-C Colpitts-Clapp AT-Cut crystal oscillator board suitable for frequencies from 5 MHz up to 50 MHz

TWTMC-D Driscoll AT-Cut and SC-Cut crystal oscillator board suitable for frequencies from 5 MHz up to 100 MHz

TWTMC-D&D Daughter board that accommodates two oscillators and provides power supply, dividers, clock delay and switching logic between the two oscillators

TWTMC-OVN Oven board for Driscoll SC-Cut crystal oscillator

TWTMC-DIL DIL adapter for Ian's dual clock board



AT-cut crystal
5.6448 MHz fundamental MOQ 15 pcs Eur 29.00 each
6.1440 MHz fundamental MOQ 15 pcs Eur 29.00 each
11.2896 MHz fundamental MOQ 10 pcs Eur 27.00 each
12.2880 MHz fundamental MOQ 10 pcs Eur 27.00 each
16.9344 MHz fundamental MOQ 10 pcs Eur 27.00 each
22.5792 MHz fundamental MOQ 10 pcs Eur 27.00 each
24.5760 MHz fundamental MOQ 10 pcs Eur 27.00 each
25.0000 MHz fundamental MOQ 10 pcs Eur 27.00 each
45.1584 MHz 3rd overtone MOQ 10 pcs Eur 27.00 each
49.1520 MHz 3rd overtone MOQ 10 pcs Eur 27.00 each
90.3168 MHz 5th overtone MOQ 15 pcs Eur 29.00 each
98.3040 MHz 5th overtone MOQ 15 pcs Eur 29.00 each

SC-cut crystal
5.6448 MHz fundamental MOQ 15 pcs Eur 45.00 each
6.1440 MHz fundamental MOQ 15 pcs Eur 45.00 each
11.2896 MHz 3rd overtone MOQ 15 pcs Eur 38.00 each
22.5792 MHz 3rd overtone MOQ 10 pcs Eur 38.00 each
24.5760 MHz 3rd overtone MOQ 10 pcs Eur 38.00 each
45.1584 MHz 3rd overtone MOQ 10 pcs Eur 38.00 each
49.1520 MHz 3rd overtone MOQ 10 pcs Eur 38.00 each
90.3168 MHz 5th overtone MOQ 15 pcs Eur 56.00 each
98.3040 MHz 5th overtone MOQ 15 pcs Eur 56.00 each

Boards
TWTMC-C Colpitts-Clapp oscillator Eur 3.00 each
TWTMC-D Driscoll oscillator Eur 3.00 each
TWTMC-D&D Daughter board Eur 10.00 each
TWTMC-OVN Oven Eur 3.00 each
TWTMC-DIL Dil adapter Eur 2.00 each


Due to the variation of the USD-EUR exchange rate the prices of the TWTMC-C and the TWTMC-D&D have been increased.
Attached Images
File Type: jpg Laptech_crystals.jpg (236.9 KB, 2642 views)
File Type: jpg TWTMC-C.jpg (324.8 KB, 2556 views)
File Type: jpg TWTMC-D.jpg (791.8 KB, 2528 views)
File Type: jpg TWTMC_D&D.jpg (86.3 KB, 2378 views)
File Type: jpg TWTMC-OVN.jpg (109.7 KB, 2368 views)
File Type: jpg TWTMC-DIL.jpg (58.9 KB, 685 views)
Attached Files
File Type: zip TWTMC_OrderForm.zip (7.0 KB, 132 views)
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Old 26th May 2016, 12:07 AM   #3
andrea_mori is offline andrea_mori  Italy
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The Well Tempered Master Clock - Group buy
Default TWTMC All-in-One

If there will be enough interest, at least 100 boards, I could supply a finished board at a budget price, EUR 60 for a finished All in One board.

The board includes a dual Driscoll oscillator at 22/24 MHz. These are the only frequencies provided. It use a pair of crystals in HC-49/U package instead of HC-43/U. There are two shunt regulators on board to feed both oscillators and squarers. Output is fixed at 3V3. So one needs only unregulated or pre-regulated 10 to 12 VDC.

I could also provide an upgrade to HC-43/U Laptech crystals at the cost of Eur 60.
Attached Images
File Type: jpg TWTMC-AIO_01.jpg (292.4 KB, 643 views)
File Type: jpg TWTMC-AIO_02.jpg (136.9 KB, 519 views)
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Old 26th May 2016, 12:13 AM   #4
andrea_mori is offline andrea_mori  Italy
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The Well Tempered Master Clock - Group buy
Default Crystals and boards interest list

- andrea_mori: 2 x AT 11.2896 MHz + 2 x SC 5.6448 MHz + 2 x SC 6.144 MHz + 2 x SC 12.288 MHz + 2 x SC 90.3168 MHz + 2 x SC 98.304 MHz + 4 x TWTMC-D + 4 x TWTMC-OVN + 2 x TWTMC-D&D
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Old 26th May 2016, 12:14 AM   #5
andrea_mori is offline andrea_mori  Italy
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The Well Tempered Master Clock - Group buy
Default TWTMC All in One interest list

- andrea_mori: 4 pcs
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Old 26th May 2016, 12:31 AM   #6
andrea_mori is offline andrea_mori  Italy
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The Well Tempered Master Clock - Group buy
Default Available crystals

The following crystals are in stock (exceeding of the previous batches):

- AT-Cut 5.6448 MHz fundamental 3 pcs
- AT-Cut 12.288 MHz fundamental 4 pcs
- AT-Cut 25.000 MHz fundamental 3 pcs
- AT-Cut 33.8688 MHz 3rd overtone 2 pcs
- AT-Cut 45.1584 MHz 3rd overtone 2 pcs
- AT-Cut 49.152 MHz 3rd overtone 2 pcs
- AT-Cut 98.304 MHz 5th overtone 1 pcs
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Old 26th May 2016, 12:39 AM   #7
canvas is offline canvas  Taiwan
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andrea_mori: 2 x AT 11.2896 MHz + 2 x SC 5.6448 MHz + 2 x SC 6.144 MHz + 2 x SC 12.288 MHz + 2 x SC 90.3168 MHz + 2 x SC 98.304 MHz + 4 x TWTMC-D + 4 x TWTMC-OVN + 2 x TWTMC-D&D
canvas: 2*TWTMC-D, 2*TWTMC-OVN

Last edited by canvas; 26th May 2016 at 12:43 AM.
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Old 26th May 2016, 07:54 PM   #8
clsidxxl is offline clsidxxl  France
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TWTMC All in One interest list

- andrea_mori: 4 pcs
- clsidxxl: 1 pcs
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Old 26th May 2016, 08:10 PM   #9
martin clark is offline martin clark  Europe
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Location: Bath, UK
1 x AT 5.6448 MHz
1 x AT 11.2896 MHz
1 x SC 11.2896 MHz
2 x TWTMC-C
2 x TWTMC-D
(104Euro)

Many thanks!
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Old 27th May 2016, 08:00 AM   #10
andrea_mori is offline andrea_mori  Italy
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The Well Tempered Master Clock - Group buy
When you add yourself to the list please copy and update the previous one.

Crystals and boards interest list

- andrea_mori: 2 x AT 11.2896 MHz + 2 x SC 5.6448 MHz + 2 x SC 6.144 MHz + 2 x SC 12.288 MHz + 2 x SC 90.3168 MHz + 2 x SC 98.304 MHz + 4 x TWTMC-D + 4 x TWTMC-OVN + 2 x TWTMC-D&D
- canvas: 2*TWTMC-D, 2*TWTMC-OVN
- martin clark: 1 x AT 5.6448 MHz +1 x AT 11.2896 MHz + 1 x SC 11.2896 MHz + 2 x TWTMC-C + 2 x TWTMC-D
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