Re: [time-nuts] Leitch CSD-5300N

[paul swed]

Bill,
Well that is good news. Looks like you found your way into the clock setup.
Regards
Paul
WB8TSL

On Fri, Mar 23, 2018 at 10:00 AM, Bill Baker via time-nuts <
time-nuts@febo.com> wrote:

>
> Great news for owners of the wonderful old Leitch CSD-5300N master
> clocks.  Many stations and academic facilities still use these fine clocks
> as they have SMPTE time code and impulse out as well as an audio time beep
> option.  They are still quite valuable on ebay.  The dial-up sync option is
> still supported by the National Research Council of Canada Time Service.
> The dial in number is 613 745-3900.
> Bill, W1BKR
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Re: [time-nuts] Odetics Telecom CommSync - GPS Rollover Problem

[Gregory Beat]

N4IQT has nice photos of the Comsync (outside and inside)
http://www.n4iqt.com/comsync/
You can see the EPROM (v1.63 , 1998 date)
http://www.n4iqt.com/comsync/gpsdo003.JPG

Looks like an 8-channel Motorola Oncore receiver
http://www.n4iqt.com/comsync/gpsdo001.JPG
Upclose
http://www.n4iqt.com/comsync/gpsdo007.JPG

greg
—-
Date: Fri, 23 Mar 2018 20:50:40 -
From: "Rob Kimberley" 
To: "'Discussion of precise time and frequency measurement'"
   
Subject: [time-nuts] Odetics Telecom CommSync - GPS Rollover Problem.


Sent from iPad Air
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[time-nuts] Leitch CSD-5300N

[Bill Baker via time-nuts]

Great news for owners of the wonderful old Leitch CSD-5300N master clocks.  
Many stations and academic facilities still use these fine clocks as they have 
SMPTE time code and impulse out as well as an audio time beep option.  They are 
still quite valuable on ebay.  The dial-up sync option is still supported by 
the National Research Council of Canada Time Service.  The dial in number is 
613 745-3900.  
Bill, W1BKR
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[time-nuts] Stuff Day at Sphere coming next month, April 21st

[walter shawlee 2]

For those of you hardy souls prepared to make the journey north to BC
(before the Northern Wall goes up), this year's stuff day event will be epic.
It is on Saturday, April 21st, here in West Kelowna, BC.

We have shelves of stuff we need to clear out, including hp 8660 gear, Tek plug 
ins and portables,
a complete service manual library by the pound, and numerous Tek and Fluke 
scopes (12 so far),
an HP 105, literally TONs of free electronic parts, DMMs from $15 and up, and 
all kinds
of weird time code gear (build your own Cape Canaveral launch room). There will 
also

be a lot of outside amateur radio gear including microwave and moonshot 
equipment,
and tons of fascinating people as always.  yes, we will have our freshly cal'd  
rubidium

standard out for you to cross check your own gear, and numerous TCXOs and 
OCXO's to
play with and take home.

This is the only note to the group, you can see more details here:
*http://www.sphere.bc.ca/test/stuffday.html*
yes, we do take requests.

All the best, we hope to see you there,
walter

--
Walter Shawlee 2, President
Sphere Research Corporation
3394 Sunnyside Rd.,  West Kelowna,  BC
V1Z 2V4  CANADA  Phone: (250) 769-1834
walt...@sphere.bc.ca
WS2: We're all in one boat, no matter how it looks to you.
Love is all you need. (John Lennon)
But, that doesn't mean other things don't come in handy. (WS2)

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[time-nuts] Franklin Master Clock

[Bill Baker via time-nuts]

I have a relatively new Franklin Master Clock, model MP088-00A021 made in 
Philadelphia that just died.  It's a minute master with reversing polarity.  
Does anyone have a schematic?  The company is out of business after many years 
of making school clocks and no info on the web.  
Bill
w1bkr
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Re: [time-nuts] TS2100: From regular xtal to OCXO?

[Majdi S. Abbas]

On Wed, Mar 21, 2018 at 06:21:29PM -0700, Bruce Lane wrote:
> Fellow Clock-Tickers,
> 
>   I've got a pair of Symmetricom TS2100's, both of which have the basic
> TTL oscillator module for their reference oscillator. As other owners of
> these units are probably aware, the board is also laid out for a couple
> of different types of OCXO.

They do have 2 additional footprints, but AFAIK, they never 
shipped with anything but the MTI 240.

>   I've got what I believe are the correct OCXO's coming from an Ebay
> vendor. They match the source voltage (12VDC), the control voltage
> range, and the pinout.
> 
>   My question is, do I need to make any configuration changes to the
> 2100's, in terms of jumpers or anything? Or is it literally a case of
> swap-and-play?

Yes, and yes, in order to properly set the gain, DAC multiplier,
and enable writes to the EEPROM.

There are details in the time-nuts archives, or you can read my
writeup here and ignore the GPS bits:


https://aerographic.tumblr.com/post/139872571444/datumsymmetricom-ts2100-irig-ocxo-heol-n024-gps

Good luck!

--msa
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