Re: [time-nuts] Beginner's Atomic Clock

2019-09-16 Thread David J Taylor via time-nuts
From: pisymbol . Can anyone suggest a "starter" atomic clock project? By beginner's something that is fairly easy to put together and isn't cost prohibited (maybe a few hundred but not thousand). Thanks! -aps (Alex) = Alex, Perhaps you could clarify what

Re: [time-nuts] Beginner's Atomic Clock

2019-09-16 Thread jimlux
On 9/16/19 4:16 AM, pisymbol . wrote: Can anyone suggest a "starter" atomic clock project? By beginner's something that is fairly easy to put together and isn't cost prohibited (maybe a few hundred but not thousand). Do you mean "build the physics package", or are you just talking about

Re: [time-nuts] Beginner's Atomic Clock

2019-09-16 Thread Bob kb8tq
Hi What are you really trying to do here? If it’s a “from scratch” atomic standard, then you just aren’t going to get there. Sorry about that ... If it’s a wall clock sync’d to an external radio service then indeed you might get there. In-between those two lie tings like buying eBay telecom

Re: [time-nuts] 10811-Parts... (Using the thermal regulator circuitry)

2019-09-16 Thread Richard (Rick) Karlquist
On 9/15/2019 1:32 PM, Club Internet wrote: Rick, Thanks for this information. Actually the technology of C18 is not specified in the manual. Why should it necessarily be « foil » type and metallized? Is « foil » type same as « film » type? Of course the « mass » needs to be there (=> 3D

Re: [time-nuts] A simple sampling DMTD

2019-09-16 Thread tim...@timeok.it
Hi Jan, this is precisely the instrument that is lacking at a hobbyist price. It would be excellent to have the possibility of measuring phase noise. Can you anticipate the features of the Sampling DMTD? Can it be used with Timelab? We are waiting for your new ones.

Re: [time-nuts] 10811-Parts... (Using the thermal regulator circuitry)

2019-09-16 Thread Tim Shoppa
I understand several of the modern MEMS OCXO's use microcontroller PID control for the temperature, avoiding the need for any large capacitors for compensation. The microcontroller does a lot more than the heating job, judging by the PhD thesis I see coming out of China. They seem to feed-forward

Re: [time-nuts] Beginner's Atomic Clock

2019-09-16 Thread pisymbol .
First off, thanks to everyone who replied. On Mon, Sep 16, 2019 at 11:00 AM Bob kb8tq wrote: > What are you really trying to do here? > Take over the world - one epoch at a time. If it’s a “from scratch” atomic standard, then you just aren’t going to get > there. Sorry about that ... > Ok.

Re: [time-nuts] A simple sampling DMTD

2019-09-16 Thread Bob kb8tq
Hi You are not going to get useful phase noise data out of a normal DMTD …. The DMTD is targeted at ADEV and similar long term / high accuracy measurements. If a DMTD “makes it” to a 10 Hz beat note that is about as far as most people take it. Bob > On Sep 16, 2019, at 10:41 AM,

[time-nuts] Beginner's Atomic Clock

2019-09-16 Thread pisymbol .
Can anyone suggest a "starter" atomic clock project? By beginner's something that is fairly easy to put together and isn't cost prohibited (maybe a few hundred but not thousand). Thanks! -aps (Alex) ___ time-nuts mailing list --