Re: [time-nuts] trade timestamps

Long time lurker here. Hefty read follows - apologies. Can't blame anyone for TL;DR. On 11 November 2015 at 02:07, Alexander List wrote: > > On Wednesday, November 11, 2015 03:15 AM, Don Latham wrote: > Indeed. HFT firms have been working on their own "advanced" timekeeping >

Re: [time-nuts] Oooold GPS receiver discussions Austron 2201 as an xample

Paul wrote: Indeed the almanac seems to be the problem. I can see what it thinks should be in view. Its not been easy to backout if the satelliets are behind or in the future. My time mis-alignment even though the closks correct within 1 second and the same for my location accuracy. I can

Re: [time-nuts] Oooold GPS receiver discussions Austron 2201 as an xample

Magnus Indeed the almanac seems to be the problem. I can see what it thinks should be in view. Its not been easy to backout if the satelliets are behind or in the future. My time mis-alignment even though the closks correct within 1 second and the same for my location accuracy. I can manually tell

Re: [time-nuts] Downsizing dilemma, HP 3335A

Hi Well, if you sit down with a bunch of these people and talk to them, you find out some interesting things: 1) When the job postings go up, there aren’t many that ask about resistors and capacitors. They all ask about firmware and processors. The ratio is at least 10:1. 2) If you hold out

Re: [time-nuts] Downsizing dilemma, HP 3335A

MIT had a reasonably famous EE professor there circa 1950 - Harold Edgerton, known for his strobe lights and stop-motion photography. He also designed sonar pingers. Both depended on triggered capacitor discharge energy. There is now an Edgerton Center at MIT that teaches the practical art of

Re: [time-nuts] Downsizing dilemma, HP 3335A

I know Zoya for many years, this ham business is a good idea.Give her my best regards , Ulrich In a message dated 11/11/2015 7:00:42 P.M. Eastern Standard Time, r...@nc0b.com writes: The EE department at the University of Colorado has an enlightened professor.

Re: [time-nuts] Downsizing dilemma, HP 3335A

Tektronix (long before being a division of Danaher) up to at least the mid 70's would require an EE to work in production. I understand some HP divisions did the same. All that started to change when 'software' engineers were showing up. On Wed, Nov 11, 2015 at 5:56 PM, KA2WEU--- via

Re: [time-nuts] Downsizing dilemma, HP 3335A

I find it difficult in NJ to find seasoned RF engineers...Ulrich In a message dated 11/11/2015 9:02:03 P.M. Eastern Standard Time, kb...@n1k.org writes: Hi Well, if you sit down with a bunch of these people and talk to them, you find out some interesting things: 1) When the job

Re: [time-nuts] Downsizing dilemma, HP 3335A

On 11/11/15 3:26 PM, Rob Sherwood. wrote: The EE department at the University of Colorado has an enlightened professor. http://ecee.colorado.edu/faculty/popovic.html Zoya required her students to not only get a ham license, but to build a Norcal 40A.

Re: [time-nuts] Time syncing WiFi routers using FM radio

Hi Mark, Well, there is a measurable advantage with slotted TDMA over the random access scheme used now. whether there is enough accuracy in processing the very low bandwidth of the RDA payload is questionable plus you do need to recover the subcarrier from the FM payload. Maybe a higher

Re: [time-nuts] Downsizing dilemma, HP 3335A

The EE department at the University of Colorado has an enlightened professor. http://ecee.colorado.edu/faculty/popovic.html Zoya required her students to not only get a ham license, but to build a Norcal 40A. http://ecee.colorado.edu/~ecen2420/Files/NorCal40A_Manual.pdf Most of the EE

Re: [time-nuts] Time syncing WiFi routers using FM radio

Hi There are a number of issues with what they are proposing: 1) Inside a building you have reflections. Those reflections create dead spots. A “no antenna” FM radio is not very good at sorting that stuff out. If you get the station and I don’t … that’s a problem. 2) If you have radios from

[time-nuts] Time syncing WiFi routers using FM radio

Something tells me these guys haven't a clue... http://www.theregister.co.uk/2015/11/11/boffins_teach_routers_to_tune_in_and_dance/ ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] Downsizing dilemma, HP 3335A

I can understand the downsizing, someday it will happen to me. And where I live there is pretty much zero interest in anything electronic. The two local schools Portland State and Reed both have EE but the students done seem to have any interest in anything physical. they believe everything they

Re: [time-nuts] Downsizing dilemma, HP 3335A

I work at a university and my experience has been that the students are willing to learn and quite competent. I advised an aerospace engineering student on building and troubleshooting the RF source for a plasma photo chromatography unit he built from scratch (he specified and had the tank

Re: [time-nuts] Time syncing WiFi routers using FM radio

Hi Mark, What's the inherent problem with the idea?  In the early days of radio, they used commercial radio transmissions as an encryption mechanism, so there is some history of using commercial radio as a reference source.  Is it simply a matter of different propagation delays and multi-path