Re: [time-nuts] Traveling to the US west coast

Hi, I hope you guys all get together to meet with Attila. Unfortunately I will not be able to join this time, as I'd love to be at IFCS too, the budget for it did not materialize this time. I too need to get to SF bay area and Seattle area to meet the many friends there, but this was not the

Re: [time-nuts] Cesium Clock Avialable

Hi Unfortunately there really is no way to tell how much Cs is left in the tube. You can look at beam current and make a guess. All that really will tell you is that the fuel gauge is on empty or at least just off of empty. Bob > On May 19, 2018, at 2:30 AM, Paul Bicknell

Re: [time-nuts] Cesium Clock Avialable

Hi Doug Is it possible to test its operation and can the time left on the cesium be calculated Regards Paul -Original Message- From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Doug Millar via time-nuts Sent: 19 May 2018 05:04 To: time-nuts@febo.com Subject:

Re: [time-nuts] Cesium Clock Avialable

What would you estimate the shipping cost to Arizona (ZIP 85641) ? Thanks, Dick, W1KSZ Sent from Outlook From: time-nuts on behalf of Doug Millar via time-nuts Sent: Friday, May 18,

Re: [time-nuts] Improving ocxo temp control

Hi One key point about the need for “zero gradient”: Crystals and many other components are quite sensitive to thermal gradients. Very small fractions of a degree (as a gradient ) can have significant impact on the frequency of an oscillator. One of many “interesting things” about

Re: [time-nuts] Cesium Clock Avialable

Don't Cesium clocks have a beam current integrator of sorts so that it's possible to pretty accurately assess the remaining life of the tube? If not, I'm terribly surprised and disappointed. Also, beginning with a new tube, roughly how long can one be run until it reaches exhaustion? Are we

Re: [time-nuts] Cesium Clock Avialable

Dana, I would suggest downloading and reading the HP journals that discussed the first clocks there's a lot of information in there about how they operate Etc. On Sat, May 19, 2018, 8:23 AM Dana Whitlow wrote: > Don't Cesium clocks have a beam current integrator of sorts

Re: [time-nuts] Cesium Clock Avialable

Hi Doug I'm visiting just down the coast and could pick up the HP. If not sold I'll take it. Don AJ7LL On 2018-05-18 22:04, Doug Millar via time-nuts wrote: Hi, I am willing to part with my HP 5061A cesium standard and manual. The unit was rebuilt and functioning some years ago and not used

[time-nuts] NPL Open House 2018 prepare for 2019

Hello This is a very early warning for the 2019 event. Thursday 17/5 Michael, OZ2ELA, and I attended the NPL Open House 2018 event: Our visit was both to attend the event but also to see what NPL uses the Next Generation Beacons units for. It was a really

Re: [time-nuts] Cesium Clock Avialable

Hi > On May 19, 2018, at 11:22 AM, Dana Whitlow wrote: > > Don't Cesium clocks have a beam current integrator of sorts so that it's > possible > to pretty accurately assess the remaining life of the tube? If not, I'm > terribly Simple answer - no. The ones we are

Re: [time-nuts] Cesium Clock Avialable

Hi Ok …. errr …. shipping …. about that. Cs is classified rightly as a hazardous substance. Transporting and shipping hazardous stuff is indeed regulated (as it should be). For various silly reasons the minute amount of Cs inside a virtually indestructible container in a Cs standard falls

Re: [time-nuts] Cesium Clock Avialable

Bob Did go looking on the internet. I had quite a laugh because indeed our friends at Amazon and Ebay will happily sell you a 1 gram vile of Cesium. $226. By the way thats free shipping. Chuckle. No mention of shipping issues. Letting this part of the thread drop. Someone gets a nice reference if

Re: [time-nuts] Resistance components interested.

I would be interested, ...please put me on the list. Thank you Don Lewis N5CID Austin, TX === === On Sat, 2018-05-19 at 13:19 -0400, paul swed wrote: > Apologies to everyone as this part of Doug's offer isn't time nuts. > Doug

Re: [time-nuts] Cesium Clock Avialable

Hi Well I *can* say that when you ship a 5071 back to be re-tubed, you *do* run into the Cs shipping rule. HP did a bunch of stuff to demonstrate that there was near zero chance of a problem. Ultimately it had zero impact on how the rules were written. I’m by no means trying to tell people not

Re: [time-nuts] Cesium Clock Avialable

Hi At least these days, a 5071 comes back from the factory with the same Hazmat labels on it as it ships into their factory with. Bob > On May 19, 2018, at 4:43 PM, Poul-Henning Kamp wrote: > > > In message , Bob

Re: [time-nuts] Cesium Clock Avialable

Hi Doug. Did not see my email go by. Would like to have the cs standard. I'm visiting my family in Huntington Beach and can pick it up so no packing. Have cash. Off list at djl at Montana dot com Thanks Don AJ7LL On 2018-05-18 22:04, Doug Millar via time-nuts wrote: Hi, I am willing to part

[time-nuts] Resistance components interested.

Apologies to everyone as this part of Doug's offer isn't time nuts. Doug I am interested in the R's Please contact me directly paulsw...@gmail.com ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Cesium Clock Avialable

Along the same lines, I wonder how long a new tube can last on the shelf? About 16 years ago I bought a 5061A on eBay. When I received it I noticed the tube was replaced and still had 2 years on the warranty. It worked just fine. The only problem was the battery charging circuit. Wanting to

Re: [time-nuts] Cesium Clock Avialable

Paul, Cesium 133 is a stable isotope in terms of nuclear decay, but it is still an alkali metal and as such needs to be properly handled. Cesium combined with water forms a very strong base which etches glass for instance. Then the amounts of it and how hard to get to it is another things. It's

Re: [time-nuts] Cesium Clock Avialable

In message , Bob kb8tq writes: >Cs is classified rightly as a hazardous substance. Transporting and shipping >hazardous stuff is indeed regulated (as it should be). For various silly >reasons >the minute amount of Cs inside a virtually

Re: [time-nuts] Traveling to the US west coast

It looks like IFCS is being held in the Lake Tahoe area; if I were Attila, I'd fly into Reno and rent a car for the beautiful drive up into the Sierra, thus avoiding SFO/OAK and the Bay Area traffic mess. Jeremy On Fri, May 18, 2018 at 11:48 PM Magnus Danielson < mag...@rubidium.dyndns.org>

Re: [time-nuts] Cesium Clock Avialable

Bobs Comments are on target. The Cesium can last a long time on the shelf. But (Always a but) other stuff in the tube tends to pollute the tube. This causes the high current when you start the system that may or may not clear up.Some great time-nuts threads on the subject and how to attempt to

Re: [time-nuts] Cesium Clock Avialable

Bob I believe that the Cesium 133 as I recall actually isn't. There was a document from HP. But its been a long time. I will bet folks ship the 5061s all the time without a thought either way. Just saying. Neither right or wrong. Regards Paul On Sat, May 19, 2018 at 2:18 PM, Bob kb8tq

[time-nuts] Cesium sold

Hi, Thanks for all the responses. The unit has been spoken and paid for. Doug K6JEY ___ 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.