Re: [time-nuts] Frequency satndard on ebay UK / sulzer manuals
Dear Tom, Luciano, all, Thank you for your comments. The Sulzer is not intended to be used as a high accuracy standard. The oscillator fits nicely to some old radio's ;-) However, I think (not measured) that stability of the oscillator is better then the average stability of a modern low budget oscillator. Therefore it would be nice to have it up and running. The schematic on the website of Tom was very helpful. Basically it would be sufficient for trouble-shooting/repair. However, I would like to figure out the numbers which should be indicated by the moving coil meter on the front. I did a quick measurement with a HP counter 53230A (without a very stable reference). The number shown for the allen variation (after a couple of hours) was 1.5mHz on the 5MHz signal. (Maybe this number shows the stability of the HP??) This number gives good hope, according to me. Is there a source for manuals on these instruments? I checked the site of KO4BB, unfortunately he doesn't have a PDF of the manual. Best regards, Jeroen On 09/17/2012 02:50 PM, Timeok wrote: Yes Tom you right, but your example is on a rare Sulzer 2.5 MHz. Another very good reference can be an HP 106 (quasi impossible to find). This is not valid for the Racal model as described. I have had several unit of this standar under test and I keep one for my personal small museum. I have also a Suzer 5 MHz, it is better than Racal but same as performance to several others. I have an HP 107Br but it is not working and I cannot test it at the moment. All us are looking to find some units in flea market, old and good, but this is a very rare event due the fact there is a large 5e-10 (OCXO)production or lower, and few top performance products as you describe. good luck to us! Luciano Il 2012-09-14 19:32 Tom Van Baak ha scritto: This equipment is only good to spend winter time or for museum. Several newer oscillator,like HP10811/10544, have the same characteristics or better in smaller size. The component used ar not the best and you can have fault expecially on the power supply. Luciano, My experience is that some of these old 2.5 or 5 MHz Sulzer oscillators have vastly better performance than most 10811/10544. For example, see: http://www.febo.com/pages/oscillators/sulzer/ http://leapsecond.com/museum/sul25-1/ http://leapsecond.com/museum/sul25-2/ While it is true that they don't always work out-of-the-box when you find them cheap on eBay, once fixed, their performance is stunning. That's why these rare old Sulzer's are highly prized. /tvb ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Frequency satndard on ebay UK / sulzer manuals
Hi Jeroen, I have a paper copy of the SULZER 5A (the 5 MHz version) and of the Racal. If you want I can make a paper copy and send you it by postal service. I do not know if Tom have a pdf copy of the manuals. Me too have these OCXO for passion. I suggest you to buy e ceep GPSDO and use it as reference for your counter, so you can start to do accurate measurement and compare the standard you have (or will have) in your lab. Let me know, for logistic use my direct email: tim...@timeok.it Luciano IZ5JHJ www.timeok.it Il 2012-09-18 09:04 Jeroen Bastemeijer ha scritto: Dear Tom, Luciano, all, Thank you for your comments. The Sulzer is not intended to be used as a high accuracy standard. The oscillator fits nicely to some old radio's ;-) However, I think (not measured) that stability of the oscillator is better then the average stability of a modern low budget oscillator. Therefore it would be nice to have it up and running. The schematic on the website of Tom was very helpful. Basically it would be sufficient for trouble-shooting/repair. However, I would like to figure out the numbers which should be indicated by the moving coil meter on the front. I did a quick measurement with a HP counter 53230A (without a very stable reference). The number shown for the allen variation (after a couple of hours) was 1.5mHz on the 5MHz signal. (Maybe this number shows the stability of the HP??) This number gives good hope, according to me. Is there a source for manuals on these instruments? I checked the site of KO4BB, unfortunately he doesn't have a PDF of the manual. Best regards, Jeroen On 09/17/2012 02:50 PM, Timeok wrote: Yes Tom you right, but your example is on a rare Sulzer 2.5 MHz. Another very good reference can be an HP 106 (quasi impossible to find). This is not valid for the Racal model as described. I have had several unit of this standar under test and I keep one for my personal small museum. I have also a Suzer 5 MHz, it is better than Racal but same as performance to several others. I have an HP 107Br but it is not working and I cannot test it at the moment. All us are looking to find some units in flea market, old and good, but this is a very rare event due the fact there is a large 5e-10 (OCXO)production or lower, and few top performance products as you describe. good luck to us! Luciano Il 2012-09-14 19:32 Tom Van Baak ha scritto: This equipment is only good to spend winter time or for museum. Several newer oscillator,like HP10811/10544, have the same characteristics or better in smaller size. The component used ar not the best and you can have fault expecially on the power supply. Luciano, My experience is that some of these old 2.5 or 5 MHz Sulzer oscillators have vastly better performance than most 10811/10544. For example, see: http://www.febo.com/pages/oscillators/sulzer/ http://leapsecond.com/museum/sul25-1/ http://leapsecond.com/museum/sul25-2/ While it is true that they don't always work out-of-the-box when you find them cheap on eBay, once fixed, their performance is stunning. That's why these rare old Sulzer's are highly prized. /tvb ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- timeok ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Frequency satndard on ebay UK / sulzer manuals
Dear Luciano, Thank you for your offer to make copies of the manuals. If it is OK with you, I can make a PDF-scan of the manuals and send them to KO4BB to be put on his website. I will contact you offlist for my address details. Luckily enough I have a GPSDO, but... the GPSDO is at home and the counter is at work. A challenge to get these two together ;-) Best regards, Jeroen PE1RGE On 09/18/2012 10:30 AM, Timeok wrote: Hi Jeroen, I have a paper copy of the SULZER 5A (the 5 MHz version) and of the Racal. If you want I can make a paper copy and send you it by postal service. I do not know if Tom have a pdf copy of the manuals. Me too have these OCXO for passion. I suggest you to buy e ceep GPSDO and use it as reference for your counter, so you can start to do accurate measurement and compare the standard you have (or will have) in your lab. Let me know, for logistic use my direct email: tim...@timeok.it Luciano IZ5JHJ www.timeok.it Il 2012-09-18 09:04 Jeroen Bastemeijer ha scritto: Dear Tom, Luciano, all, Thank you for your comments. The Sulzer is not intended to be used as a high accuracy standard. The oscillator fits nicely to some old radio's ;-) However, I think (not measured) that stability of the oscillator is better then the average stability of a modern low budget oscillator. Therefore it would be nice to have it up and running. The schematic on the website of Tom was very helpful. Basically it would be sufficient for trouble-shooting/repair. However, I would like to figure out the numbers which should be indicated by the moving coil meter on the front. I did a quick measurement with a HP counter 53230A (without a very stable reference). The number shown for the allen variation (after a couple of hours) was 1.5mHz on the 5MHz signal. (Maybe this number shows the stability of the HP??) This number gives good hope, according to me. Is there a source for manuals on these instruments? I checked the site of KO4BB, unfortunately he doesn't have a PDF of the manual. Best regards, Jeroen On 09/17/2012 02:50 PM, Timeok wrote: Yes Tom you right, but your example is on a rare Sulzer 2.5 MHz. Another very good reference can be an HP 106 (quasi impossible to find). This is not valid for the Racal model as described. I have had several unit of this standar under test and I keep one for my personal small museum. I have also a Suzer 5 MHz, it is better than Racal but same as performance to several others. I have an HP 107Br but it is not working and I cannot test it at the moment. All us are looking to find some units in flea market, old and good, but this is a very rare event due the fact there is a large 5e-10 (OCXO)production or lower, and few top performance products as you describe. good luck to us! Luciano Il 2012-09-14 19:32 Tom Van Baak ha scritto: This equipment is only good to spend winter time or for museum. Several newer oscillator,like HP10811/10544, have the same characteristics or better in smaller size. The component used ar not the best and you can have fault expecially on the power supply. Luciano, My experience is that some of these old 2.5 or 5 MHz Sulzer oscillators have vastly better performance than most 10811/10544. For example, see: http://www.febo.com/pages/oscillators/sulzer/ http://leapsecond.com/museum/sul25-1/ http://leapsecond.com/museum/sul25-2/ While it is true that they don't always work out-of-the-box when you find them cheap on eBay, once fixed, their performance is stunning. That's why these rare old Sulzer's are highly prized. /tvb ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Frequency satndard on ebay UK / sulzer manuals
Yes Tom you right, but your example is on a rare Sulzer 2.5 MHz. Another very good reference can be an HP 106 (quasi impossible to find). This is not valid for the Racal model as described. I have had several unit of this standar under test and I keep one for my personal small museum. I have also a Suzer 5 MHz, it is better than Racal but same as performance to several others. I have an HP 107Br but it is not working and I cannot test it at the moment. All us are looking to find some units in flea market, old and good, but this is a very rare event due the fact there is a large 5e-10 (OCXO)production or lower, and few top performance products as you describe. good luck to us! Luciano Il 2012-09-14 19:32 Tom Van Baak ha scritto: This equipment is only good to spend winter time or for museum. Several newer oscillator,like HP10811/10544, have the same characteristics or better in smaller size. The component used ar not the best and you can have fault expecially on the power supply. Luciano, My experience is that some of these old 2.5 or 5 MHz Sulzer oscillators have vastly better performance than most 10811/10544. For example, see: http://www.febo.com/pages/oscillators/sulzer/ http://leapsecond.com/museum/sul25-1/ http://leapsecond.com/museum/sul25-2/ While it is true that they don't always work out-of-the-box when you find them cheap on eBay, once fixed, their performance is stunning. That's why these rare old Sulzer's are highly prized. /tvb ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- timeok ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Frequency satndard on ebay UK / sulzer manuals
This unit on ebay is made from Racal. The complete unit, oscillator and power supply is the MA259. It is a +/- 5 e-10 day stablity. This equipment is only good to spend winter time or for museum. Several newer oscillator,like HP10811/10544, have the same characteristics or better in smaller size. The component used ar not the best and you can have fault expecially on the power supply. I have a paper copy of the manual also for the Sulzer 5A (AN/URQ10). Luciano www.tim...@timeok.it IZ5JHJ Il 2012-09-13 15:31 Jeroen Bastemeijer ha scritto: Hi Ignacio, I got one of these units, from the same seller (actually it is the one which is pictured). It had a broken connector and a dent in the cylinder casing. Luckily the unit powers up! And it generates the frequencies it should generate. But: the frequency tuning is a bit stiff/non-responsive and the tape which is used in the oven is a bit old. Fixing this unit seems like a nice winter-project ;-) Is there anyone on the list who knows where to find the Sulzer manuals (preferably as PDF)? As it is basically a Sulzer 2.5 / Sulzer 5.0. Thank you, best regards, Jeroen On 09/12/2012 01:28 AM, EB4APL wrote: Hi, Has anybody in UK noticed ebay item #140845930763 ? It reminds me the old Sulzer units, but longer. Ignacio, EB4APL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. -- timeok ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Frequency satndard on ebay UK / sulzer manuals
This equipment is only good to spend winter time or for museum. Several newer oscillator,like HP10811/10544, have the same characteristics or better in smaller size. The component used ar not the best and you can have fault expecially on the power supply. Luciano, My experience is that some of these old 2.5 or 5 MHz Sulzer oscillators have vastly better performance than most 10811/10544. For example, see: http://www.febo.com/pages/oscillators/sulzer/ http://leapsecond.com/museum/sul25-1/ http://leapsecond.com/museum/sul25-2/ While it is true that they don't always work out-of-the-box when you find them cheap on eBay, once fixed, their performance is stunning. That's why these rare old Sulzer's are highly prized. /tvb ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Frequency satndard on ebay UK / sulzer manuals
Hi Ignacio, I got one of these units, from the same seller (actually it is the one which is pictured). It had a broken connector and a dent in the cylinder casing. Luckily the unit powers up! And it generates the frequencies it should generate. But: the frequency tuning is a bit stiff/non-responsive and the tape which is used in the oven is a bit old. Fixing this unit seems like a nice winter-project ;-) Is there anyone on the list who knows where to find the Sulzer manuals (preferably as PDF)? As it is basically a Sulzer 2.5 / Sulzer 5.0. Thank you, best regards, Jeroen On 09/12/2012 01:28 AM, EB4APL wrote: Hi, Has anybody in UK noticed ebay item #140845930763 ? It reminds me the old Sulzer units, but longer. Ignacio, EB4APL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] Frequency satndard on ebay UK
Hi, Has anybody in UK noticed ebay item #140845930763 ? It reminds me the old Sulzer units, but longer. Ignacio, EB4APL ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
