Re: [time-nuts] 10MHz LTE-Lite

Hi Said, It's a little while since you sent this, but I just finished some testing with the LTE Lite. I already had a Trimble Thunderbolt and also have an HP 5335A with OCXO. The 5335A has shown the Trimble O/P 10 MHz +/- 0.03 Hz for the last few years (displayed frequency on the 5335A has drifte

Re: [time-nuts] HP 5061Cs reference question

Tom Thats exactly what I did in building a new oven controller. Figured I would bake some leftover Cs grease off the bottom of the oven. Like you say nothing to loose. I took quite a bit of time in figuring out the levels and it took maybe 60 days. I will guess I am 10 C hotter. At the time I was f

[time-nuts] FW: Z3810 Correction

Correction of post sent about 5 min ago. I had TX- going to pin 7. It should go to Pin 8 of Z3810. Bill Riches I finally got my 3810 talking with my windows 7 64 bit pc. 1. Ordered a Gearmo GM-485422 USB to RS-485-422 interface converter from Amazon - 39.95. http://www.amaz

Re: [time-nuts] HP 5061Cs reference question

Pete, Paul, You can always try increasing the Cs oven temperature. I'm told +10 C will double the beam current -- and half the life. But my my, hey hey sometimes it's better to burn out than fade away. /tvb (i5s) > On Dec 6, 2014, at 5:25 PM, Pete Lancashire wrote: > > Paul and I have tubes

Re: [time-nuts] Did a member of time-nuts buy this?

$300 of which $50 was shipping. 14 day return but I pay the shipping. So figured would only be out the $50. Seller said would be fipped in a double wall box. So shipping shock was much less of a concern. Also not for work. On Dec 6, 2014 1:52 PM, "Dr. David Kirkby (Kirkby Microwave Ltd)" < drkir

Re: [time-nuts] HP 5061Cs reference question

Paul and I have tubes that most would consider dead. Mine is not far behind. I fire it up about 3 to 4 times a year if anything to keep it pumped down. I can still get the correct peak with the internal meter but it is getting harder each time. On Dec 6, 2014 11:16 AM, "paul swed" wrote: > All g

Re: [time-nuts] HP 5061Cs reference question

C-field adjustment is what you should be doing then. Cheers, Magnuns On 12/07/2014 12:24 AM, paul swed wrote: Slow by 44 ns in 27 minutes. -2.7 e-11 Regards Paul On Sat, Dec 6, 2014 at 5:24 PM, Magnus Danielson wrote: Yes, but what's the offset? Cheers, Magnus On 12/06/2014 10:12 PM, pa

[time-nuts] TIC users

Ran across this in my 'net travels: http://www.maximintegrated.com/en/products/analog/sensors-and-sensor-interface/MAX35103.html American supplier, 20 ps accuracy claimed time interval to digital. Don -- "The power of accurate observation is commonly called cynicism by those who have not got it

Re: [time-nuts] HP 5061Cs reference question

Slow by 44 ns in 27 minutes. -2.7 e-11 Regards Paul On Sat, Dec 6, 2014 at 5:24 PM, Magnus Danielson wrote: > Yes, but what's the offset? > > Cheers, > Magnus > > > On 12/06/2014 10:12 PM, paul swed wrote: > >> The system does consistently come to lock with a constant offset. So its >> finding s

Re: [time-nuts] Did a member of time-nuts buy this?

Used to be quite a bit available at reasonable costs. But Ebay ended that ages ago. Even for bad stuff the dollars are very high. Granted some venders will take back items that do not work such as this one. But not always. And yes its not for business at all. Regards Paul On Sat, Dec 6, 2014 at 4:

Re: [time-nuts] HP 5061Cs reference question

Yes, but what's the offset? Cheers, Magnus On 12/06/2014 10:12 PM, paul swed wrote: The system does consistently come to lock with a constant offset. So its finding something. Just the odd little offset thats bugging me. On Sat, Dec 6, 2014 at 2:48 PM, Magnus Danielson wrote: It's a challe

[time-nuts] Lucent / Z3810A log time offset.

I was curious about the six second difference between GPS valid on the two boxes. Is that likely just due to (message) processing overhead? ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listin

Re: [time-nuts] Did a member of time-nuts buy this?

On 6 Dec 2014 21:10, "paul swed" wrote: > > David > I picked my unit up for $125 at a Hamfesyt and the tube was absolutely bad > as it turned out. But then what do you expect for the $. That said another > time nut gave me his dead tube from a 5060. I spent a good deal of time > getting it adapted

[time-nuts] For those without enough watches

With that Miyota GL 20 movement it is not good enough for the HAQ crowd. Seems all right as a geeky item. Ronald ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow

Re: [time-nuts] HP 5061Cs reference question

The system does consistently come to lock with a constant offset. So its finding something. Just the odd little offset thats bugging me. On Sat, Dec 6, 2014 at 2:48 PM, Magnus Danielson wrote: > It's a challenge indeed. IF you are running on fumes, it will be harder > for the automatic locking t

Re: [time-nuts] Did a member of time-nuts buy this?

David I picked my unit up for $125 at a Hamfesyt and the tube was absolutely bad as it turned out. But then what do you expect for the $. That said another time nut gave me his dead tube from a 5060. I spent a good deal of time getting it adapted into the 5061 now name Frankenstein. This included a

Re: [time-nuts] HP 5061Cs reference question

It's a challenge indeed. IF you are running on fumes, it will be harder for the automatic locking to find first and second modulations, and if it does this, it is much more likely to be the central pedestal as the others will be even further down into the noise. The lack of the fundamental tone

Re: [time-nuts] Did a member of time-nuts buy this?

On 6 December 2014 at 17:58, paul swed wrote: > Well a bad tube is a bad tube and thats been my story. Though for $125 how > can I complain. But for $999 plus $79 shipping no interest at all. > When the tubes used up its used up. Generally. > Regards > Paul > WB8TSL I just offered them $250 for i

Re: [time-nuts] HP 5061Cs reference question

All good answers with a good tube and enough current to read on the meter. But I am working at the very limit of the Cs fumes. There is current, about .5 to 1 tick mark on the meter of a 5061 using a 5060 tube. Thats the challenge on a very eol tube. Regards Paul. On Sat, Dec 6, 2014 at 1:56 PM, M

Re: [time-nuts] HP 5061Cs reference question

Tom, On 12/06/2014 06:04 PM, Tom Van Baak wrote: Paul, There are 7 peaks total, about 40 kHz apart (on my 5061A). If you're talking about just the central peak, there are two smaller peaks on either side, about 1 kHz apart. The exact value depends on internal magnetic field, which is specifi

Re: [time-nuts] HP 5061Cs reference question

OK Tom Some things for me to look at. The Zeeman freq method never worked for me. I tried high and low drive and several generators that are very accurate. But will take a look. Thanks On Sat, Dec 6, 2014 at 1:18 PM, Tom Van Baak wrote: > > Now if the device was on one of those side peaks what w

Re: [time-nuts] Did a member of time-nuts buy this?

On 6 Dec 2014 18:33, "Bert Kehren via time-nuts" wrote: > be done, the real issue who would buy one people that need > Cesium will pay the price for a new one and time nuts would not spend the > money for a working rebuild tube. Where is the market? There's a professional market for thermionic

Re: [time-nuts] Did a member of time-nuts buy this?

Be careful you are touching on two subjects that can turn in to long lasting discussions. Legal shipping will be very expensive and rebuilding tubes has been looked at in the past but short of a sophisticated lab in Russia I doubt it could be done, the real issue who would buy one people tha

[time-nuts] Did a member of time-nuts buy this?

Bob Camp wrote: > Unless you are making a GPS receiver from scratch (which you might be), there > is a certain “trust factor” that comes into using a GPS for timing. Since you > can’t play with the firmware, you trust that the guy who wrote it did a good > job. As compared to internet facing so

Re: [time-nuts] HP 5061Cs reference question

> Now if the device was on one of those side peaks what would that make the > offset at 5 MHz be?. > I think something like 1 Khz divided by 9192631770. I am sure 5 MHz comes > into the calculation. > Pretty small. But may guess thats what I see. Its 44ns slow over 27 minutes > as of yesterday.

Re: [time-nuts] Did a member of time-nuts buy this?

On 6 Dec 2014 17:58, "paul swed" wrote: > > Well a bad tube is a bad tube and thats been my story. Though for $125 how > can I complain. But for $999 plus $79 shipping no interest at all. > When the tubes used up its used up. Generally. > Regards > Paul > WB8TSL I have never looked a tube, but wh

Re: [time-nuts] Did a member of time-nuts buy this?

Well a bad tube is a bad tube and thats been my story. Though for $125 how can I complain. But for $999 plus $79 shipping no interest at all. When the tubes used up its used up. Generally. Regards Paul WB8TSL On Sat, Dec 6, 2014 at 12:06 PM, Bob Camp wrote: > Hi > > If you toss a Rb into the GPS

Re: [time-nuts] Did a member of time-nuts buy this?

Hi If you toss a Rb into the GPSDO “mix” things can get quite good. The Rb *should* be better than an OCXO in the > 1,000 second range. It’s crossover with the GPS ADEV will be further out than the OCXO’s. The gotcha with both the OCXO and Rb is their temperature dependance. Some / many / all o

Re: [time-nuts] HP 5061Cs reference question

Paul, There are 7 peaks total, about 40 kHz apart (on my 5061A). If you're talking about just the central peak, there are two smaller peaks on either side, about 1 kHz apart. The exact value depends on internal magnetic field, which is specific to each beam tube design. For some measurements o

[time-nuts] OT - For those without enough watches

I saw this watch on Indegogo. You may be able to get one in time for a Christmas gift. Here are the specs for the movement itself. Acc

Re: [time-nuts] Did a member of time-nuts buy this?

I am looking forward to long term data on the Lucent unit. GPSDO's are getting closer and closer to Cesium. Having worked for 18 month on two GPSDO projects we find that the limiting factors are the Cesium Standards. Working presently on a Cesium GPSDO. Short term OCXO, medium Rb and long ter

Re: [time-nuts] HP 5061Cs reference question

Yes indeed I used the GPSDO to do exactly that. When I play with the synthesizer things go all over the place. As someone pointed out a long time ago, the synthesizer doesn't behave as you may think. Logically I had believed that a LSD of 1 change would be some simple shift. But it seems that was w

Re: [time-nuts] HP 5061Cs reference question

Paul, On 12/06/2014 04:51 PM, paul swed wrote: Magnus Great but I am looking for very specific detail. If you pick a wrong peak especially if you can't see peaks on a very weak tube then I think that translates into an actual offset. Yes, there will be a significant offset unless you adjust yo

Re: [time-nuts] HP 5061Cs reference question

Magnus Great but I am looking for very specific detail. If you pick a wrong peak especially if you can't see peaks on a very weak tube then I think that translates into an actual offset. If thats a true statement. Given the modern GPS boxes we have today that are stable. Wouldn't you see that as a

Re: [time-nuts] Did a member of time-nuts buy this?

Hi > On Dec 6, 2014, at 10:35 AM, Magnus Danielson > wrote: > > Bob, > > On 12/06/2014 04:16 PM, Bob Camp wrote: >> Hi >> >>> On Dec 6, 2014, at 9:54 AM, Dr. David Kirkby (Kirkby Microwave Ltd) >>> wrote: >>> >>> I see this cesium reference on eBay, where apparently someone returned >>> it

Re: [time-nuts] HP 5061Cs reference question

Bob Thanks. On Sat, Dec 6, 2014 at 10:23 AM, Bob Camp wrote: > Hi > > It’s a pretty small difference. The normal “tuning” (mag field) > adjustments may be a bigger deal. A whole lot depends on the tube design. I > *think* they are a measure of the transit time in the tube. It’s been about > 30 y

Re: [time-nuts] HP 5061Cs reference question

Hi Paul and Bob On 12/06/2014 04:04 PM, Bob Camp wrote: Hi Sure you can set them on the wrong peak. If you really get confused, you can also set them on the wrong transition … (gulp). Peak wise, the one you want is the highest Q / best SNR. Set it to one of the others and your ADEV degrades.

Re: [time-nuts] Did a member of time-nuts buy this?

Bob, On 12/06/2014 04:16 PM, Bob Camp wrote: Hi On Dec 6, 2014, at 9:54 AM, Dr. David Kirkby (Kirkby Microwave Ltd) wrote: I see this cesium reference on eBay, where apparently someone returned it due to the fact it had a bad tube. http://www.ebay.com/itm/HP-Agilent-5061A-Cesium-Beam-Frequ

Re: [time-nuts] PRS-45 Cs Standard

Didier, Happy to contribute. The protocols of the 4065C comes from the 5085 cesium core which sits in a varity of vendors wrapping-boxes. Simple protocols like that should be useful for analog cesiums and rubidiums, and I have toyed with the idea of a small board that senses voltages and out

Re: [time-nuts] HP 5061Cs reference question

Hi It’s a pretty small difference. The normal “tuning” (mag field) adjustments may be a bigger deal. A whole lot depends on the tube design. I *think* they are a measure of the transit time in the tube. It’s been about 30 years since I dug into that, so I could easily be a bit confused there ….

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

HI Use these systems for navigation? What a silly idea. I’m *sure* they are mainly intend to deliver precise timing to people’s basement labs :) Bob > On Dec 6, 2014, at 9:56 AM, Magnus Danielson > wrote: > > You can use them as additional nav birds too. > > Cheers, > Magnus > > On 12/06

Re: [time-nuts] Did a member of time-nuts buy this?

Hi > On Dec 6, 2014, at 9:54 AM, Dr. David Kirkby (Kirkby Microwave Ltd) > wrote: > > I see this cesium reference on eBay, where apparently someone returned > it due to the fact it had a bad tube. > > http://www.ebay.com/itm/HP-Agilent-5061A-Cesium-Beam-Frequency-Standard-FOR-PARTS-REPAIR-/141

Re: [time-nuts] HP 5061Cs reference question

Bob Thanks but can you actually see that on the frequency out at 5 Mhz. If on the wrong transition or peak shouldn't that translate into an offset also. On Sat, Dec 6, 2014 at 10:04 AM, Bob Camp wrote: > Hi > > Sure you can set them on the wrong peak. If you really get confused, you > can also s

Re: [time-nuts] HP 5061Cs reference question

Hi Sure you can set them on the wrong peak. If you really get confused, you can also set them on the wrong transition … (gulp). Peak wise, the one you want is the highest Q / best SNR. Set it to one of the others and your ADEV degrades. Transition wise … not a good idea at all. Bob > On Dec

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

Attila, On 12/06/2014 03:18 PM, Attila Kinali wrote: On Sat, 06 Dec 2014 14:47:54 +0100 Magnus Danielson wrote: Also, GPS L2C and L5 signals is already there. AFAIK there is no satellite with L5 capabilities in space yet. There is at least 7 of them now. See this message on 18 Sep: All C

Re: [time-nuts] PRS-45 Cs Standard

Thanks Magnus, and apologies to all for the "not-so-smooth" conversion to the new site. I still have a few random bugs that I am trying to squash and I appreciate your patience... On the other hand, performance of the new server seems to be good. Didier KO4BB On Sat, Dec 6, 2014 at 7:22 AM, Magn

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

On Sat, 6 Dec 2014 12:35:16 -0200 Edesio Costa e Silva wrote: > According to > the L2C and L5 signals are now available. Oh.must have missed that. Thanks! Attila Kinali -- I pity people who can't find laug

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

You can use them as additional nav birds too. Cheers, Magnus On 12/06/2014 03:09 PM, Bob Camp wrote: Hi On Dec 6, 2014, at 8:47 AM, Magnus Danielson wrote: Recall that beyond GPS, GLONASS, GALILEO and Big Dipper (COMPASS) you also have WAAS/EGNOS and other SBAS (Satellite Based Augmentatio

[time-nuts] Did a member of time-nuts buy this?

I see this cesium reference on eBay, where apparently someone returned it due to the fact it had a bad tube. http://www.ebay.com/itm/HP-Agilent-5061A-Cesium-Beam-Frequency-Standard-FOR-PARTS-REPAIR-/141483787108 I'm wondering if it was someone on this list. It is likely to be practical to replace

[time-nuts] HP 5061Cs reference question

I have a curious question that really applies to all Cs references. Its possible to set them on to the wrong peak. Typically in the literature it will speak to at least 3 peaks and you want to select the highest central peak. However if you select the wrong peak, how much would the output frequency

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

On 12/6/14, 6:18 AM, Attila Kinali wrote: On Sat, 06 Dec 2014 14:47:54 +0100 Magnus Danielson wrote: Also, GPS L2C and L5 signals is already there. AFAIK there is no satellite with L5 capabilities in space yet. Also L2C is still marked as unhealthy. Attila Kinali

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

According to the L2C and L5 signals are now available. Edésio On Sat, Dec 06, 2014 at 03:18:25PM +0100, Attila Kinali wrote: > On Sat, 06 Dec 2014 14:47:54 +0100 > Magnus Danielson wrote: > > > Also, GPS L2C and L5 signals is alread

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

On Sat, 6 Dec 2014 12:49:53 +0100 Azelio Boriani wrote: > The 2014 EFTF abstracts are available here: (55MB ZIP file) > The papers are also online, but only available to those who were at the conference. At

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

On Sat, 06 Dec 2014 14:47:54 +0100 Magnus Danielson wrote: > Also, GPS L2C and L5 signals is already there. AFAIK there is no satellite with L5 capabilities in space yet. Also L2C is still marked as unhealthy. Attila Kinali -- I pity people who can't find laughter or a

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

Hi > On Dec 6, 2014, at 8:47 AM, Magnus Danielson > wrote: > > Recall that beyond GPS, GLONASS, GALILEO and Big Dipper (COMPASS) you also > have WAAS/EGNOS and other SBAS (Satellite Based Augmentation Systems). > > If you open up all of them, there is a lot of signals in the air. > Also, GPS

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

Recall that beyond GPS, GLONASS, GALILEO and Big Dipper (COMPASS) you also have WAAS/EGNOS and other SBAS (Satellite Based Augmentation Systems). If you open up all of them, there is a lot of signals in the air. Also, GPS L2C and L5 signals is already there. Cheers, Magnus On 12/06/2014 01:16

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

Hi > On Dec 6, 2014, at 3:09 AM, Attila Kinali wrote: > > On Fri, 5 Dec 2014 21:16:14 -0500 > Bob Camp wrote: > >> Running one locked to each system is really the only approach that makes >> sense. There inevitably are minor differences in systems and trying to >> average things out is not th

Re: [time-nuts] PRS-45 Cs Standard

FTS4065C revision J manual uploaded. I knew the login and password where some "fake" values, but I just could not locate it and didnt' have them cached. Cheers, Magnus On 12/06/2014 01:56 PM, Didier Juges wrote: Magnus and all, Thanks for the heads up, the Upload Instruction link has been f

Re: [time-nuts] PRS-45 Cs Standard

Magnus and all, Thanks for the heads up, the Upload Instruction link has been fixed. The short of it: click on the "Upload File" button, use "manuals" for both login and password, enter your email and any message for me (optional), select your file, fill the info the fields about the document as

Re: [time-nuts] Lucent KS-24361 RS-422 interface pinout

>From a few days ago... go...@g-romahn.de said: >> Pins 4 and 8 look like inputs. Does anybody know what you >> can send in there? > Hal, it's already known to us: > http://www.mail-archive.com/time-nuts%40febo.com/msg69593.html Thanks. Summary: If you send "ptim:tcod:cont 0", that turns o

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

The 2014 EFTF abstracts are available here: (55MB ZIP file) On Sat, Dec 6, 2014 at 9:09 AM, Attila Kinali wrote: > On Fri, 5 Dec 2014 21:16:14 -0500 > Bob Camp wrote: > >> Running one locked to each system is really the only approa

Re: [time-nuts] PRS-45 Cs Standard

I sent him the manual so that the serial readout of that digital cesium becomes easy and trivial. Cheers, Magnus On 12/06/2014 10:56 AM, Bert Kehren via time-nuts wrote: Provided the unit works one simple way to get an idea as to the health of the tube is to insert a plain multi meter in the

Re: [time-nuts] PRS-45 Cs Standard

Charles, On 12/06/2014 02:30 AM, Charles Steinmetz wrote: Do open up and take a look. Do take photos. Do share. :) Bet the bottom plate is a good start. Cheers, Magnus Perhaps you can also post the manual to Didier's site (ko4bb.com) so we can all follow along? 1) It's the standard FTS406

Re: [time-nuts] PRS-45 Cs Standard

Provided the unit works one simple way to get an idea as to the health of the tube is to insert a plain multi meter in the 200 mV position. That inserts a 10 M resistor in series and you can calculate beam current. Bert Kehren In a message dated 12/5/2014 8:38:07 P.M. Eastern Standard Time

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

On Fri, 5 Dec 2014 21:16:14 -0500 Bob Camp wrote: > Running one locked to each system is really the only approach that makes > sense. There inevitably are minor differences in systems and trying to > average things out is not the best way to do it. Might or might not be. At least for GPS and Gal

Re: [time-nuts] PRS-45 Cs Standard

In message <4b0682e3-098c-451a-a67c-4cc163a31...@n1k.org>, Bob Camp writes: >What counts is running hours. There is no way to know how many >running hours the gizmo has just from looking at the manufacturing >date. It could have been constant service the whole time. This is the absolutel