Re: [time-nuts] The ultraAtomic clock for home

Jim wrote: Charles wrote: [blob over wire bond construction] is also extremely unreliable, particularly WRT environmental effects such as temperature changes, humidity, and atmospheric pollutants. In my view, it is unsuitable for use in anything but dirt cheap, purely disposable devices like

Re: [time-nuts] The ultraAtomic clock for home

Does anyone know of a clock with digital readout that uses the CME-8000? Tnx, Mike On 2017-04-07 13:03, Tom Van Baak wrote: Very good catch it is *not* the cme8000 chip. Thats a classic am receiver. It is the everset chip. Sorry for mis-leading. Hi Paul, I can confirm (from talking with

Re: [time-nuts] The ultraAtomic clock for home

Hi > On Apr 7, 2017, at 7:19 PM, jimlux wrote: > > On 4/7/17 3:45 PM, Charles Steinmetz wrote: >> Bob wrote: >> >>> The epoxy over wire bond construction approach >>> is low cost, and not very experimenter friendly. >> >> It is also extremely unreliable, particularly WRT

Re: [time-nuts] The ultraAtomic clock for home

Bob wrote: The epoxy over wire bond construction approach is low cost, and not very experimenter friendly. It is also extremely unreliable, particularly WRT environmental effects such as temperature changes, humidity, and atmospheric pollutants. In my view, it is unsuitable for use in

Re: [time-nuts] The ultraAtomic clock for home

On 4/7/17 3:45 PM, Charles Steinmetz wrote: Bob wrote: The epoxy over wire bond construction approach is low cost, and not very experimenter friendly. It is also extremely unreliable, particularly WRT environmental effects such as temperature changes, humidity, and atmospheric pollutants.

Re: [time-nuts] HP5061B High Ion Current/Tubes Out of Cesium

Hi > On Apr 7, 2017, at 4:33 PM, Poul-Henning Kamp wrote: > > > In message >

Re: [time-nuts] Fwd: HP5061B High Ion Current/Tubes Out of Cesium

Don't forget Skips great hi-res pixs. Those pictures actually triggered a complete re-thinking for me about how C tubes actually work. Further digging and reading that set me straight. I think Poul-Henning helped me also. I doubt there are fumes in a 004. But a low flux tube there may be hope.

Re: [time-nuts] The ultraAtomic clock for home

Hello to the group. No there is not a way to bring that information out. In fact it samples things much like other Time nuts threads have been discussing on GPS. It then stores the samples and figures out the data. So every 1.5 minutes you get a complete sentence. Its actually a bit more tricky

Re: [time-nuts] Fwd: HP5061B High Ion Current/Tubes Out of Cesium

In message

Re: [time-nuts] Looking for Gen Rad 1101A oscillator/parts

The Harvard collection of scientific instruments has one BTW http://waywiser.rc.fas.harvard.edu/view/objects/asitem/People@5686/57/displayDate-asc?t:state:flow=028d1ae2-7ea9-4238-9161-a1bf858d81d8 You might to contact them and see if they have any documentation and or photos they can share

Re: [time-nuts] The ultraAtomic clock for home

Hi > On Apr 7, 2017, at 1:16 PM, John Ackermann N8UR wrote: > > Is there any way to derive carrier phase from these chips? Or to get raw > modulation data that might make it usable as the front end to one of PaulS's > de-PSKers? Unless it shows up on one of the test points on

[time-nuts] Fwd: HP5061B High Ion Current/Tubes Out of Cesium

https://www.febo.com/pipermail/time-nuts/2017-April/thread.html We did not attempt to achieve lock because we saw absolutely no beam current with the beam adjust all the way up. We were running the oven above 150° C which is more than 65° above normal oven temperatures. Cesium pressure should

Re: [time-nuts] The ultraAtomic clock for home

Hi Since it’s a magnetic stepper motor, how about a magnetic (coil) sensor? Based on past data, anything past 1us is massive overkill. A mag sensor with a ~100 KHz bandwidth should be a do-able sort of thing. A couple dozen turns of wire around a suitable ferrite rod might be enough. Bob >

Re: [time-nuts] The ultraAtomic clock for home

Is there any way to derive carrier phase from these chips?  Or to get raw modulation data that might make it usable as the front end to one of PaulS's de-PSKers? On Apr 7, 2017, 1:04 PM, at 1:04 PM, Tom Van Baak wrote: >> Very good catch it is *not* the cme8000 chip. Thats

Re: [time-nuts] The ultraAtomic clock for home

> Very good catch it is *not* the cme8000 chip. Thats a classic am receiver. > It is the everset chip. Sorry for mis-leading. Hi Paul, I can confirm (from talking with the guys backing it) that, yes, it's the EverSet ES100, in die form (CoB). I believe you and I have both used the early

Re: [time-nuts] Looking for Gen Rad 1101A oscillator/parts

Hi, The GR 1101A thermometer thermostat is similar, but not the same dimensions. The GR 1101A has one bent thermometer that is visible from the front panel but does not have any contacts. The other thermometer/thermostat is deep within the crystal oven, is also bent, and does have the

Re: [time-nuts] The ultraAtomic clock for home

Tom Very good catch it is *not* the cme8000 chip. Thats a classic am receiver. It is the everset chip. Sorry for mis-leading. Regards Paul WB8TSL On Thu, Apr 6, 2017 at 9:25 PM, Bob kb8tq wrote: > Hi > > I’m sure it would have happily corrected for summer time in Europe two >

Re: [time-nuts] TAPR TICC boxed (input protection)

David wrote: what doping is used for PNP RF transistors and saturated switches if it is not gold? Does it also increase leakage? I replied: Gold doping doesn't affect the speed of BJTs in the active region very much -- its purpose is to reduce minority carrier lifetime and, thereby, to

Re: [time-nuts] CSAC vs NAC1

Hi If you set them both on the table, the CSAC’s I’ve seen are just slightly smaller than the NAC’s. It’s not by much. I never bothered to see if the mechanical specs on the parts reflected this or not. Bob > On Apr 6, 2017, at 10:41 PM, jimlux wrote: > > On 4/6/17

Re: [time-nuts] TAPR TICC boxed (input protection)

Another thing to watch out for if you need very low leakage, is if the package is transparent. All junctions are photodiodes. Maybe it's less of a problem now with SMTs, than it was with glass body diodes or translucent transistor packages. Andy ___