similar to: System Time Source

Warren, one slight correction on an other wise nicely written bit of info: The time transmitted from WWV is not Mountain Time. Even though the WWV transmitter farm is located in the Mountain time zone, the signals are transmitted as "Coordinated Universal time", UTC, or 'Zulu' time. Here, you can listen to a recording made at the transmitter site for the 5Mhz signal:

A few years ago, one of our interns was curious about system time keeping features in computer systems.? This intern was also the proud owner of an inexpensive Radio-Controlled Clock. The intern wondered why computer motherboards were not just equipped with a chip like the ones in the RCC so that their system time would always be correct. I posted a question about this on the CentOS email list

Once upon a time, Warren Young <warren at etr-usa.com> said: > a. It?s transmitting from a fixed location in a time zone you probably aren?t in ? US Mountain ? being the least populous of the lower 48?s four time zones. You therefore have to configure time zone offset and DST rules, which means additional software if you want it to track changes to these things. There were 10 batches of

On Wed, May 24, 2017 10:45 am, Warren Young wrote: > On May 24, 2017, at 8:52 AM, Chris Adams <linux at cmadams.net> wrote: >> >> Once upon a time, Warren Young <warren at etr-usa.com> said: >>> a. It???s transmitting from a fixed location in a time zone you >>> probably aren???t in ??? US Mountain ??? being the least populous of >>> the lower

On May 24, 2017, at 7:53 AM, Chris Olson <chris_e_olson at yahoo.com> wrote: > > One of our STEM interns recently observed that there are > inexpensive clocks that sync via radio to standard time > services. There are two major types: 1. WWVB and its equivalents in other countries: https://en.wikipedia.org/wiki/WWVB 2. GPS clocks. WWVB has several problems: a. It?s

Software Defined Radio On Wednesday, July 19, 2017 8:40 AM, "m.roth at 5-cent.us" <m.roth at 5-cent.us> wrote: Chris Olson wrote: > > Several weeks ago, we posted a message seeking information about > time sources.? There were many helpful and educational responses. > An excerpt from one of the responses is included below.? We have > been following up with

On 9/22/20 2:14 PM, Gregory Sloop via samba wrote > As an old sage (curmudgeon if you like) I'd encourage people to really consider if the Pi is really what you want. > For me, it's not - even though it's a totally cool device conceptually. They're a ton of fun to tinker with too. I am also an old guy and didn't want to use the Rpi for this purpose. However, many years

A few months ago, I built a samba 4 DC on a RPi 2B v1.1 with Louis' packages. It's just like a normal Intel cpu based installation with a couple of minor exceptions. I built mine on Raspbian Lite. You'll have to add an additional user and give it sudo privileges.The network setup was like the older Debian 9 by simply adjusting /etc/network/interfaces. To add Louis' repo

[Going a bit off-topic here, and going to do a bit of a deep-dive on RF stuff, but maybe it will be useful to Chris] On 05/24/2017 12:20 PM, Valeri Galtsev wrote: > It is insightful, yet... There are a bunch of other factors that may need > to be taken into account. Angular transmission pattern of satellite (horn? > or is it yagi? antenna) vs ground based (monopole? or dipole? antenna -

On Wed, 2017-05-24 at 13:53 +0000, Chris Olson wrote: > One of our STEM interns recently observed that there are > inexpensive clocks that sync via radio to standard time > services.? This begged a question about why every computer > would not have a radio module to receive time.? Our senior > staff did not have a good answer or if time from such a > radio module would be

I have several discontinued Sierra Wireless MP775 mobile GSM/EDGE radio modems. These devices were originally installed in emergency vehicles to provide data and voice access along with GPS reporting. They have external RF connections for GSM/EDGE and GPS signals. The baseband side includes four wire audio, RS-232 serial, USB and some parallel digital I/O for panic switches etc. GSM voice

On May 24, 2017, at 8:52 AM, Chris Adams <linux at cmadams.net> wrote: > > Once upon a time, Warren Young <warren at etr-usa.com> said: >> a. It?s transmitting from a fixed location in a time zone you probably aren?t in ? US Mountain ? being the least populous of the lower 48?s four time zones. You therefore have to configure time zone offset and DST rules, which means

I'm looking into costs and feasibility of moving a live feed from a FM radio station from the station to a point that's past the usable range of their radio signal. It's a rural location and Internet service is not available at the station. If the destination was closer or their transmitter was more powerful, I could avoid this step and just plug in a radio, but.... My best idea so

I have 8 cofactors possibly affecting one and only one variable. I make conditional histograms: <-pdf(file="tst3.pdf",paper="special",width=36,height=36) <-histogram(~Oversized|dat$c1*dat$c2*dat$c5*dat$c6*dat$c7*dat$c8*dat$c9*dat$c10,nint=21,layout=c(32,8),data=dat,type="count") <-dev.off() This works (compliments to R developers!) but it does generate a

Looking for a radio tuner for my audio server. Needs to do AM. Any hardware reccomendations? -- -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- - - - Jason Pyeron PD Inc. http://www.pdinc.us - - Principal Consultant 10 West 24th Street #100 - - +1 (443) 269-1555 x333

Hello everyone, If anyone is interested, I have created a HOWTO on running a Motorola GPS receiver connected to a CentOS 7 box via serial port (com1), with 1PPS over DCD. The trick here is that CentOS 7 uses systemd and setup was a bit different. Anyway, everything works. The result is a highly accurate NTP server, Stratum 1. Here is the documentation.

Dear all, On a new server (postfix dovecot postfixadmin Centos) I did define quota=0 in postfixadmin However suddenly a user with more than 9Gb of mail got his mailbox new/cur empty and maillog shows: Sep 3 15:43:56 mail16 dovecot: lda(brouwerb at scholarium.nl): Error: sieve: msgid=<alpine.LRH.2.20.1509031543050.16381 at streaming2.antenna.nl>: failed to store into mailbox

I am creating habitat selection models for caribou and other species with data collected from GPS collars. In my current situation the radio-collars recorded the locations of 30 caribou every 6 hours. I am then comparing resources used at caribou locations to random locations using logistic regression (standard habitat analysis). The data is therefore highly autocorrelated and this causes Type

Rich Adamson writes >>GMRS, FRS and MURS radios may not be interconnected with the PSTN (47 > > CFR 95.141). There has been a lot of talk from lobbyists to clarify this > > rule, but as it stands you could conceivably connect a *private* network > > to GMRS or MURS radios (you can't make any plugins or modifications to > > an FRS radio that isn't type

On 03/21/2017 05:51 AM, Scott Robbins wrote: > On Mon, Mar 20, 2017 at 05:09:55PM -0700, Robert Moskowitz wrote: >> I am looking for one of those very small USB wifi adapters for the server >> I am working on. I am tired of dealing with the 4" long TP-LINK I have >> and for my purposes, one of those little 1cm ones would do. But which >> work with Linux? When I