[time-nuts] VECTRON 371Y383 oscillator
Good day all, I recently purchased a VECTRON 10Mhz oscillator like the one in the this eBay listing 38133695 Very typical of some of VECTRON older offerings but I have been unable to find much if any information on this oscillator. I haven't yet emailed VECTRON but thought I might first ask the learned members of this list if anyone has or knows any details before I plug it in to see what I get. The oscillator is marked 371Y383 which a search of VECTRONS returns nothing but comparing to pictures and drawings of some older VECTRON units seems to indicate it might be or is very similar to their old CO-351 product. Cheers, Graham ve3gtc ___ 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] VECTRON 371Y383 oscillator
Make a phone call to the NH plant. Ask a product specialist for details. May get shuffled to the PA plant. Persisit. Stan, W1LE Cape Cod On 12-Aug-13 8:53 AM, Collins, Graham wrote: Good day all, I recently purchased a VECTRON 10Mhz oscillator like the one in the this eBay listing 38133695 Very typical of some of VECTRON older offerings but I have been unable to find much if any information on this oscillator. I haven't yet emailed VECTRON but thought I might first ask the learned members of this list if anyone has or knows any details before I plug it in to see what I get. The oscillator is marked 371Y383 which a search of VECTRONS returns nothing but comparing to pictures and drawings of some older VECTRON units seems to indicate it might be or is very similar to their old CO-351 product. Cheers, Graham ve3gtc ___ 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] ***SPAM*** GPS in the news: LightStream, Jamming
On 1 Judge should throw suit out with prejudice. As entire model was based on re-allocating spectrum from space to terrestrial and breaking billions of dollars worth of govt/military/civilian gear so they could deliver Internet without buying proper spectrum.It was a Hail Mary pass at best and a stupid gamble worthy of a drunk in Vegas at worst.They lost for sound technical reasons On the second that fine needs at least 1 and preferably 2 zeros added to it This interfered with the new GPS landing system which instead of stepping planes down through flight levels. Instead they use sharply curving direct flight paths from cruise to landing Sent from my iPhone On Aug 11, 2013, at 5:16 AM, Hal Murray wrote: > Harbinger sues Deere and GPS companies for $1.9 billion in damages > > http://tinyurl.com/k7w3psl > http://www.reuters.com/article/2013/08/09/us-harbinger-deere-lawsuit-idUSBRE97 > 80ZD20130809 > > Ah, the American way. When in trouble, sue everybody. > > > > N.J. Man In A Jam, After Illegal GPS Device Interferes With Newark Liberty > Operations > > http://tinyurl.com/koen2z3 > http://newyork.cbslocal.com/2013/08/09/n-j-man-in-a-jam-after-illegal-gps-devi > ce-interferes-with-newark-liberty-operations/ > > $32K fine. > > > -- > These are my opinions. I hate spam. > > > > ___ > 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] Rb standard questions
Hello, Tuesday, July 30, 2013, 3:03:57, Bob Camp wrote: >> 3) what is the typical life of such a unit? B> If it's run without a heat sink, about two years. B> If it's power off on the shelf, many decades. There was another "aging factor" mentioned in some documents that circulate around the net. Helium can diffuse from atmosphere through glass walls ans change buffer gas composition inside the cells. Run well cooled, >> 10 years for 90% of the units As I can see, my FRS-C still works well after approx 10 yrs on a cell site working 24/7 and 5 yrs sitting on the shelf. But lamp voltage that was recorded 5 yrs ago differs from the one that I measured when I put it back to work. It is lowered little bit. 73! Yuri UA3ATQ/KI7XJ -- Best regards, Yuri mailto:y...@ostry.ru ___ 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] Rb standard questions
What are the two lamp voltages? You may be in the middle part of the life curve. Regards Paul WB8TSL On Mon, Aug 12, 2013 at 3:21 PM, Yuri Ostry wrote: > Hello, > > Tuesday, July 30, 2013, 3:03:57, Bob Camp wrote: > > >> 3) what is the typical life of such a unit? > > B> If it's run without a heat sink, about two years. > > B> If it's power off on the shelf, many decades. > > There was another "aging factor" mentioned in some documents that > circulate around the net. Helium can diffuse from atmosphere through > glass walls ans change buffer gas composition inside the cells. > > Run well cooled, >> 10 years for 90% of the units > > As I can see, my FRS-C still works well after approx 10 yrs on a cell > site working 24/7 and 5 yrs sitting on the shelf. But lamp voltage > that was recorded 5 yrs ago differs from the one that I measured > when I put it back to work. It is lowered little bit. > > 73! > Yuri > UA3ATQ/KI7XJ > -- > Best regards, > Yuri mailto:y...@ostry.ru > > > ___ > 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] Rb standard questions
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Re: [time-nuts] Rb standard questions
Hello, Tuesday, August 13, 2013, 0:08:01, paul swed wrote: >What are the two lamp voltages? >You may be in the middle part of the life curve. >Regards >Paul >WB8TSL 8.34 V back in tne 2008. 8.26 V in the beginning of 2013 (after few hours of operation, started after long inactivity with lamp voltage around 6 V). 73! Yuri UA3ATQ/KI7XJ -- Best regards, Yuri mailto:y...@ostry.ru ___ 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] Rb standard questions
Hi On Aug 12, 2013, at 3:21 PM, Yuri Ostry wrote: > Hello, > > Tuesday, July 30, 2013, 3:03:57, Bob Camp wrote: > >>> 3) what is the typical life of such a unit? > > B> If it's run without a heat sink, about two years. > > B> If it's power off on the shelf, many decades. > > There was another "aging factor" mentioned in some documents that > circulate around the net. Helium can diffuse from atmosphere through > glass walls ans change buffer gas composition inside the cells. >From what I have seen of "stored" cells - it's not a major issue. > > Run well cooled, >> 10 years for 90% of the units > > As I can see, my FRS-C still works well after approx 10 yrs on a cell > site working 24/7 and 5 yrs sitting on the shelf. But lamp voltage > that was recorded 5 yrs ago differs from the one that I measured > when I put it back to work. It is lowered little bit. The key question is - was it powered up in the cell site or simply sitting powered down? A *lot* of the cell site Rb's were in "emergency backup" applications (cell sites on trucks …). They sat around for 10 years, but didn't run for very long at all. Bob > > 73! > Yuri > UA3ATQ/KI7XJ > -- > Best regards, > Yuri mailto:y...@ostry.ru > > > ___ > 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] Anyone heard of a Rubidium Standard called a Varian X-4700A?
Hi all, A number of years ago when I lived in Denver, I knew George Kamas of whom worked in the (then NBS) Time and frequency Labs. He was able to purchase a lot of the equipment that they disposed of and I wound up with one piece that I only had running for a short time. It is a Varian X-4700A serial #4. I was told by George (and I have no way to know I f this was true) , that this unit was modified by NBS from the original Varian dividers and such, and was at one time used as the actual unit to steer the transmitters at WWVB as they has the cesium bank to get the actual frequency and time, but they wanted they best they could get for short term stability to drive the transmitter frequency for comparison purposes. This would have been steered by the bank of cesium clocks and synced to USNO I am sure, but this unit runs on 24VDC, is a monster as far as size, and I am not sure if it still works, but it did at one time when I fired it up. I have pictures if anyone would like to see what I am talking about. I suspect that Varian will have nothing to do with any questions asked, and NIST will have tossed any records regarding such equipment, but has anyone else any info that can shed some light on this beast? Thanks, Jerry ___ 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] Rb standard questions
>From those voltages I speculate a long life. In the various RBs I have 2-3.5 V seems to be trouble. Every units a bit different. When the units gets very old you will see the lamp re-ignite. Generally this will be noticed as a significant random phase jump. If you have a lock light it will go out for 30-60 or so seconds until the system comes back on. When I get an old rb I attach a cheap digital pedometer with an opto coupler etc (Could be a FET or transistor just as easily) to the lock signal. It increments every time the system unlocks. Humorously I call it a loc-O-meter. Regards Paul WB8TSL On Mon, Aug 12, 2013 at 5:55 PM, Bob Camp wrote: > Hi > > On Aug 12, 2013, at 3:21 PM, Yuri Ostry wrote: > > > Hello, > > > > Tuesday, July 30, 2013, 3:03:57, Bob Camp wrote: > > > >>> 3) what is the typical life of such a unit? > > > > B> If it's run without a heat sink, about two years. > > > > B> If it's power off on the shelf, many decades. > > > > There was another "aging factor" mentioned in some documents that > > circulate around the net. Helium can diffuse from atmosphere through > > glass walls ans change buffer gas composition inside the cells. > > From what I have seen of "stored" cells - it's not a major issue. > > > > > Run well cooled, >> 10 years for 90% of the units > > > > As I can see, my FRS-C still works well after approx 10 yrs on a cell > > site working 24/7 and 5 yrs sitting on the shelf. But lamp voltage > > that was recorded 5 yrs ago differs from the one that I measured > > when I put it back to work. It is lowered little bit. > > The key question is - was it powered up in the cell site or simply sitting > powered down? A *lot* of the cell site Rb's were in "emergency backup" > applications (cell sites on trucks …). They sat around for 10 years, but > didn't run for very long at all. > > Bob > > > > > 73! > > Yuri > > UA3ATQ/KI7XJ > > -- > > Best regards, > > Yuri mailto:y...@ostry.ru > > > > > > ___ > > 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] Anyone heard of a Rubidium Standard called a Varian X-4700A?
Jerry would love to see some pictures. Quite likely it will work. Way back when they used to put a fair amount of RB in so pretty good chances. Sure you could have various issues like how they ignite the bulb. But those aren't really that bad to deal with usually. Regards Paul WB8TSL On Mon, Aug 12, 2013 at 6:47 PM, wrote: > Hi all, > A number of years ago when I lived in Denver, I knew George Kamas of whom > worked in the (then NBS) Time and frequency Labs. He was able to purchase a > lot of the equipment that they disposed of and I wound up with one piece > that I only had running for a short time. It is a Varian X-4700A serial #4. > > I was told by George (and I have no way to know I f this was true) , that > this unit was modified by NBS from the original Varian dividers and such, > and was at one time used as the actual unit to steer the transmitters at > WWVB as they has the cesium bank to get the actual frequency and time, but > they wanted they best they could get for short term stability to drive the > transmitter frequency for comparison purposes. This would have been steered > by the bank of cesium clocks and synced to USNO I am sure, but this unit > runs on 24VDC, is a monster as far as size, and I am not sure if it still > works, but it did at one time when I fired it up. > > I have pictures if anyone would like to see what I am talking about. > > I suspect that Varian will have nothing to do with any questions asked, > and NIST will have tossed any records regarding such equipment, but has > anyone else any info that can shed some light on this beast? > > Thanks, > > Jerry > ___ > 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] Rb standard questions
Hi They made a change on the Efratom Rb's some time around 2005 that boosted the "normal" lamp voltage by about 3 volts. Without tracing out the circuit(s) there's no way know if they just bumped the bias voltage up or what they did. An "old" lamp voltage unit probably is ok to 4 volts or so. I'm not sure if the same is true of the newer "9 volt" units. Bob On Aug 12, 2013, at 6:52 PM, paul swed wrote: > From those voltages I speculate a long life. In the various RBs I have > 2-3.5 V seems to be trouble. > Every units a bit different. When the units gets very old you will see the > lamp re-ignite. Generally this will be noticed as a significant random > phase jump. If you have a lock light it will go out for 30-60 or so seconds > until the system comes back on. > When I get an old rb I attach a cheap digital pedometer with an opto > coupler etc (Could be a FET or transistor just as easily) to the lock > signal. It increments every time the system unlocks. Humorously I call it a > loc-O-meter. > Regards > Paul > WB8TSL > > > On Mon, Aug 12, 2013 at 5:55 PM, Bob Camp wrote: > >> Hi >> >> On Aug 12, 2013, at 3:21 PM, Yuri Ostry wrote: >> >>> Hello, >>> >>> Tuesday, July 30, 2013, 3:03:57, Bob Camp wrote: >>> > 3) what is the typical life of such a unit? >>> >>> B> If it's run without a heat sink, about two years. >>> >>> B> If it's power off on the shelf, many decades. >>> >>> There was another "aging factor" mentioned in some documents that >>> circulate around the net. Helium can diffuse from atmosphere through >>> glass walls ans change buffer gas composition inside the cells. >> >> From what I have seen of "stored" cells - it's not a major issue. >> >>> >>> Run well cooled, >> 10 years for 90% of the units >>> >>> As I can see, my FRS-C still works well after approx 10 yrs on a cell >>> site working 24/7 and 5 yrs sitting on the shelf. But lamp voltage >>> that was recorded 5 yrs ago differs from the one that I measured >>> when I put it back to work. It is lowered little bit. >> >> The key question is - was it powered up in the cell site or simply sitting >> powered down? A *lot* of the cell site Rb's were in "emergency backup" >> applications (cell sites on trucks …). They sat around for 10 years, but >> didn't run for very long at all. >> >> Bob >> >>> >>> 73! >>> Yuri >>> UA3ATQ/KI7XJ >>> -- >>> Best regards, >>> Yuri mailto:y...@ostry.ru >>> >>> >>> ___ >>> 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. ___ 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] Rb standard questions
Everything I have seems to be pre 2005 of the units I am thinking of. They are 1998 region. Best regards Bob. Paul On Mon, Aug 12, 2013 at 8:07 PM, Bob Camp wrote: > Hi > > They made a change on the Efratom Rb's some time around 2005 that boosted > the "normal" lamp voltage by about 3 volts. Without tracing out the > circuit(s) there's no way know if they just bumped the bias voltage up or > what they did. An "old" lamp voltage unit probably is ok to 4 volts or so. > I'm not sure if the same is true of the newer "9 volt" units. > > Bob > > On Aug 12, 2013, at 6:52 PM, paul swed wrote: > > > From those voltages I speculate a long life. In the various RBs I have > > 2-3.5 V seems to be trouble. > > Every units a bit different. When the units gets very old you will see > the > > lamp re-ignite. Generally this will be noticed as a significant random > > phase jump. If you have a lock light it will go out for 30-60 or so > seconds > > until the system comes back on. > > When I get an old rb I attach a cheap digital pedometer with an opto > > coupler etc (Could be a FET or transistor just as easily) to the lock > > signal. It increments every time the system unlocks. Humorously I call > it a > > loc-O-meter. > > Regards > > Paul > > WB8TSL > > > > > > On Mon, Aug 12, 2013 at 5:55 PM, Bob Camp wrote: > > > >> Hi > >> > >> On Aug 12, 2013, at 3:21 PM, Yuri Ostry wrote: > >> > >>> Hello, > >>> > >>> Tuesday, July 30, 2013, 3:03:57, Bob Camp wrote: > >>> > > 3) what is the typical life of such a unit? > >>> > >>> B> If it's run without a heat sink, about two years. > >>> > >>> B> If it's power off on the shelf, many decades. > >>> > >>> There was another "aging factor" mentioned in some documents that > >>> circulate around the net. Helium can diffuse from atmosphere through > >>> glass walls ans change buffer gas composition inside the cells. > >> > >> From what I have seen of "stored" cells - it's not a major issue. > >> > >>> > >>> Run well cooled, >> 10 years for 90% of the units > >>> > >>> As I can see, my FRS-C still works well after approx 10 yrs on a cell > >>> site working 24/7 and 5 yrs sitting on the shelf. But lamp voltage > >>> that was recorded 5 yrs ago differs from the one that I measured > >>> when I put it back to work. It is lowered little bit. > >> > >> The key question is - was it powered up in the cell site or simply > sitting > >> powered down? A *lot* of the cell site Rb's were in "emergency backup" > >> applications (cell sites on trucks …). They sat around for 10 years, but > >> didn't run for very long at all. > >> > >> Bob > >> > >>> > >>> 73! > >>> Yuri > >>> UA3ATQ/KI7XJ > >>> -- > >>> Best regards, > >>> Yuri mailto:y...@ostry.ru > >>> > >>> > >>> ___ > >>> 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. > > ___ > 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.
