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Discussion of precise time and frequency measurement

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Re: [time-nuts] RCC 8000

PV
Peter Vince
Mon, Dec 31, 2007 2:31 PM

Hello Ernie,

 Is this the RadioCode Clocks IFS8000R that you are interested in?  We have

one, and the manual.  There are (small!) circuit diagrams, but no software
information.  I believe versions were available with a serial port, but ours
doesn't have that.

 You MIGHT be able receive MSF if you make or buy a large loop aerial, but

there is always the problem of interference from PC monitors running at 1024x768
whose line frequency is very close to 60KHz.  I wonder if you might not be better
off receiving DCF, and then using a PIC to re-create the MSF code?  But you would
also have to re-create the 60KHz from the DCF 77.5KHz, so it might be more
trouble than it's worth.  Our IFS8000 no longer has an aerial - it was replaced
by a GPS system some years ago - but was left in the bay as a standby running in
"Freeze" mode.  It has proved very stable - it is currently running 7.5 x 10^-11
fast, but was 7.0 x 10^-11 a year ago, so ageing is very low.

 If we are talking about the same unit. I will try and scan the manual.  I

see that Gorgy Timing in France has a page on their website briefly describing
the older OCXO version, the IFS800: http://www.gorgy-timing.fr/ang/rtf/ifs800.htm
and they have a branch in Karlsruhe - I wonder if they would be able to provide
you with more economical help?

       Happy New Year,

             Peter Vince  (London, England)

On Mon Dec 31  4:05 , GandalfG8@aol.com sent:

In a message dated 30/12/2007 20:11:34 GMT Standard Time,  ernieperes@aol.com
writes:

Thanks  for the offer, well I am not in a hurry, just take your time.....I
have many  other project to go
on.

I'll keep looking, just as well you're not in a hurry:-)

About 10-15years ago I tried to  copy MFS but due to the close proximity of
DCF I was unable to copy.... maybe I  did not pay attention to the selective
active antenna and so on.....
do you  think that I will be able? to receive MFS in Frankfurt?????


I can separate them quite easily on a Winradio 313, using just a fairly
short length of wire or a "miniwhip" active antenna but I'm not right  on top of
either, although quite close to MSF in its new location.
From the west coast of Scotland DCF77 is a much weaker signal so not sure
how usable it would be with a DCF77 timing receiver.
I have no experience of reception in Frankfurt though so can't help  there.

HKW-Elektronik produce a range of timing related products, I have a Galleon
timing module based on their parts, and amongst these they have tuned
antennas for both DCF77 and MSF.
They might be able to advise on your reception posibilities.......

http://www.hkw-elektronik.de/shop_en/shop_assemblys.php
(http://www.hkw-elektronik.de/shop_en/shop_assemblys.php)

regards

Nigel
GM8PZR

Hello Ernie, Is this the RadioCode Clocks IFS8000R that you are interested in? We have one, and the manual. There are (small!) circuit diagrams, but no software information. I believe versions were available with a serial port, but ours doesn't have that. You MIGHT be able receive MSF if you make or buy a large loop aerial, but there is always the problem of interference from PC monitors running at 1024x768 whose line frequency is very close to 60KHz. I wonder if you might not be better off receiving DCF, and then using a PIC to re-create the MSF code? But you would also have to re-create the 60KHz from the DCF 77.5KHz, so it might be more trouble than it's worth. Our IFS8000 no longer has an aerial - it was replaced by a GPS system some years ago - but was left in the bay as a standby running in "Freeze" mode. It has proved very stable - it is currently running 7.5 x 10^-11 fast, but was 7.0 x 10^-11 a year ago, so ageing is very low. If we are talking about the same unit. I will try and scan the manual. I see that Gorgy Timing in France has a page on their website briefly describing the older OCXO version, the IFS800: http://www.gorgy-timing.fr/ang/rtf/ifs800.htm and they have a branch in Karlsruhe - I wonder if they would be able to provide you with more economical help? Happy New Year, Peter Vince (London, England) On Mon Dec 31 4:05 , GandalfG8@aol.com sent: >In a message dated 30/12/2007 20:11:34 GMT Standard Time, ernieperes@aol.com >writes: > >Thanks for the offer, well I am not in a hurry, just take your time.....I >have many other project to go >on. >------------------------- >I'll keep looking, just as well you're not in a hurry:-) >-------------------------- > >About 10-15years ago I tried to copy MFS but due to the close proximity of >DCF I was unable to copy.... maybe I did not pay attention to the selective >active antenna and so on..... >do you think that I will be able? to receive MFS in Frankfurt????? > >------------------------------ >I can separate them quite easily on a Winradio 313, using just a fairly >short length of wire or a "miniwhip" active antenna but I'm not right on top of >either, although quite close to MSF in its new location. >From the west coast of Scotland DCF77 is a much weaker signal so not sure >how usable it would be with a DCF77 timing receiver. >I have no experience of reception in Frankfurt though so can't help there. > >HKW-Elektronik produce a range of timing related products, I have a Galleon >timing module based on their parts, and amongst these they have tuned >antennas for both DCF77 and MSF. >They might be able to advise on your reception posibilities....... > >_http://www.hkw-elektronik.de/shop_en/shop_assemblys.php_ >(http://www.hkw-elektronik.de/shop_en/shop_assemblys.php) > >regards > >Nigel >GM8PZR