Re: [time-nuts] WWV/CHU

On 30 March 2018 at 06:49, Tom Van Baak wrote: > > FYI: for the original spam-free version, please use: > > https://tf.nist.gov/general/pdf/469.pdf > > In general, if the author or paper is related to NIST, the original > copyright-free PDF will be available in the NIST Time

Re: [time-nuts] WWV/CHU

Hi > On Mar 30, 2018, at 12:42 AM, Hal Murray wrote: > > > jim...@earthlink.net said: >> Hal, you should know better than to have a question like "get time" on this >> list without specify the precision and accuracy . > > I was thinking of measuring the results,

Re: [time-nuts] WWV/CHU

t...@leapsecond.com said: > In general, if the author or paper is related to NIST, the original > copyright-free PDF will be available in the NIST Time and Frequency > Publication Database. That easily searchable database, and the thousands of > papers it contains, is probably the greatest asset

Re: [time-nuts] WWV/CHU

> This is an IEEE article from 1972 that looks like a good fit: > Nationwide Precise Time and Frequency > Distribution Utilizing an Active Code Within > Network Television Broadcasts >DAVID A. HOWE > https://www.researchgate.net/publication/3092613 FYI: for the

Re: [time-nuts] WWV/CHU

jim...@earthlink.net said: > Hal, you should know better than to have a question like "get time" on this > list without specify the precision and accuracy . I was thinking of measuring the results, and maybe comparing various receivers if I get that far. "Good enough" for me would be to

Re: [time-nuts] WWV/CHU

I'll add to the conversation. CHU is easier to deal with because its not a subcarrier as the 100 Hz WWV signal is. Its FSK and bell 103 modem style. Regards Paul WB8TSL On Thu, Mar 29, 2018 at 10:08 AM, jimlux wrote: > On 3/29/18 3:49 AM, Attila Kinali wrote: > >> On Thu,

Re: [time-nuts] WWV/CHU

Hi There are a *lot* of HF receiver gizmos out there these days. Is $5 to much to spend? Does the budget make it up to $300? Do you want to pick up *every* time transmission at once? (as constrained by propagation). For something like 5 MHz / 10 MHz WWVB plus CHU, there are $20 demo boards

Re: [time-nuts] WWV/CHU

On 3/29/18 3:49 AM, Attila Kinali wrote: On Thu, 29 Mar 2018 03:12:24 -0700 Hal Murray wrote: What do I need in in order to get time from WWV or CHU? Do I need a fancy receiver as a front end? Do I have a chance with one of the low cost USB thumb drive size

Re: [time-nuts] WWV/CHU

On 3/29/18 3:12 AM, Hal Murray wrote: What do I need in in order to get time from WWV or CHU? Do I need a fancy receiver as a front end? Do I have a chance with one of the low cost USB thumb drive size receivers? Is there an obvious software package to start with? (Linux) Hal, you should

Re: [time-nuts] WWV/CHU

Hi If you are running 10 MHz as your lab standard, you *will* have 10 MHz floating around. Add to that various 10 MHz OCXO’s here or there on the bench and you have even more odd stuff right at 10 MHz. Yes, if you run triple shield coax for your standard lines and your antenna is 1000’ from

Re: [time-nuts] WWV/CHU

It does not take a fancy receiver to hear WWV or CHU. Any super low end shortwave portable (less than $100) will do fine. You then feed the audio into a PC with naps configured for NTP audio refclock. The wideband USB connected DSP receivers are neat and I am using one for various purposes in

Re: [time-nuts] WWV/CHU

On Thu, 29 Mar 2018 03:12:24 -0700 Hal Murray wrote: > What do I need in in order to get time from WWV or CHU? > > Do I need a fancy receiver as a front end? Do I have a chance with one of > the low cost USB thumb drive size receivers? > > Is there an obvious

[time-nuts] WWV/CHU

What do I need in in order to get time from WWV or CHU? Do I need a fancy receiver as a front end? Do I have a chance with one of the low cost USB thumb drive size receivers? Is there an obvious software package to start with? (Linux) -- These are my opinions. I hate spam.