Re: [time-nuts] Remoting a GPS Receiver

2014-07-23 Thread Tom Van Baak
FYI: copies of Motorola Oncore chapter 5 are found here: http://www.ko4bb.com/manuals/index.php?dir=05)_GPS_Timing/Motorola_Oncore http://wa5rrn.com/Oncore%20GPS/ch5.pdf http://www.w8bapdstar.info/library/PrecisionClocking/Motorola%20Oncore/ /tvb - Original Message - From: "Bob Stewar

Re: [time-nuts] Synergy-GPS SSR-6tru Problem Resolved

2014-07-23 Thread Tom Van Baak
Hi Bob, That's very good news. Thanks for following through on this issue. Newcomers to the list should know that unlike many of the large corporations in the T&F business, Synergy has been hobbyist and time-nuts friendly since the beginning. I know a couple of us bought our first GPS receivers

Re: [time-nuts] temperature sensor

2014-07-23 Thread Elio Corbolante
May I suggest thermistors and other temperature sensors made by Omega? Their range of products is really large and prices are not too bad: take a look also to their literature:

[time-nuts] Remoting a GPS Receiver

2014-07-23 Thread Bob Stewart
There was a discussion recently about how to send the 1PPS from a receiver to a remote user.  If this is duplicate information I apologize. Get a copy of the Motorola Oncore manuals and take a look at Chapter 5 where it discusses using RS-422 to do this.  Simple schematics and timing informatio

Re: [time-nuts] Synergy-GPS SSR-6tru Problem Resolved

2014-07-23 Thread Bob Stewart
As a reminder, I received an SSR-6tru receiver from Synergy, along with their M12 adapter, which allows you to plug it into a slot for an Oncore GT+, UT+, or VP.  I was unable to get the receiver to respond to any commands from the u-blox u-center software. After a lot of troubleshooting, I dis

Re: [time-nuts] new clock

2014-07-23 Thread Neville Michie
Deep soil temperature stability is a bit of a myth, mainly because not many people actually measure it. I measured a beautiful 0.2C degree annual sine wave 15 metres down in limestone in Kentucky. The catch is the Gauss's Error function drop-off rate of temperature fluctuation is a very good lo

Re: [time-nuts] temperature sensor

2014-07-23 Thread Neville Michie
To ensure that steam is in a suitable state for temperature measurement one uses a Hypsometer. I made one out of tin cans and it sits on an electric hot plate. It is not rocket science but it really works, my PT100 showed stable temperatures within a milliKelvin. It is made so that the splash is

Re: [time-nuts] new clock

2014-07-23 Thread Alexander Pummer
it does need a different design, but a buried oscillator, 5 to 8 meter deep in the garden has the best temperature stabilization, just don't turn thee power off, but that could be done using the old Greek water-clock principle, the spill over stabilizer. In the Bay Area [California] the soil's

Re: [time-nuts] temperature sensor

2014-07-23 Thread Attila Kinali
On Tue, 22 Jul 2014 15:59:38 -0500 "Bill Hawkins" wrote: > There is plenty of literature on the subject, but it is not in the scope > of precision time and frequency measurement. I would like to disagree here. Precise time and frequency measurement highly depends on precise control of temperatur

Re: [time-nuts] Starting point for a WWVB project?

2014-07-23 Thread George Dubovsky
The Ultralink is spoken for. Thanks... 73, geo - n4ua On Tue, Jul 22, 2014 at 1:10 PM, George Dubovsky wrote: > While looking for something else in the basement, I found this Ultralink > 301/333 WWVB receiver: > > > https://plus.google.com/u/0/photos/116677848251094111716/albums/6038922880078