Re: [time-nuts] Trimble Thunderbolt 1pps

2014-01-04 Thread David J Taylor
Interesting discussion re getting the 1PPS into a PC to synchronise a timing program. I use WSPR for ham radio and was wondering how to do this. Can you tell me which (Windows) time synch programs can use the 1PPS on DCD of the RS232 interface please? Next step would be to build a variable

Re: [time-nuts] Trimble Thunderbolt 1pps

2014-01-04 Thread Chris Albertson
On Sat, Jan 4, 2014 at 12:36 AM, David J Taylor david-tay...@blueyonder.co.uk wrote: Interesting discussion re getting the 1PPS into a PC to synchronise a timing program. I use WSPR for ham radio and was wondering how to do this. Can you tell me which (Windows) time synch programs can use

Re: [time-nuts] Trimble Thunderbolt 1pps

2014-01-04 Thread Didier Juges
Since I had a couple of spare RS-232 driver gates, I built a simple PPS extender/level shifter in my Thunderbolt Monitor kit. It is not as general purpose (not configurable) as the Fat PPS kit from TAPR, but it works well for the Thunderbolt. You could easily build the circuit on a piece of

Re: [time-nuts] Trimble Thunderbolt 1pps

2014-01-04 Thread Hal Murray
albertson.ch...@gmail.com said: Where those using the cat-5 wire as a twisted pair? If sothat's cheating Yes. I was thinking that 4 pairs would be Rx, Tx, PPS, and power. If I need Ethernet, I'll pull another Cat-5. -- These are my opinions. I hate spam.

Re: [time-nuts] Trimble Thunderbolt 1pps

2014-01-04 Thread Brian Lloyd
On Sat, Jan 4, 2014 at 12:05 PM, Hal Murray hmur...@megapathdsl.net wrote: albertson.ch...@gmail.com said: Where those using the cat-5 wire as a twisted pair? If sothat's cheating Yes. I was thinking that 4 pairs would be Rx, Tx, PPS, and power. If I need Ethernet, I'll pull another

Re: [time-nuts] Trimble Thunderbolt 1pps

2014-01-04 Thread Björn
The RIPE ntp system does a little bit of this. http://www.eecis.udel.edu/~mills/ntp/html/drivers/driver43.html --    Björn div Originalmeddelande /divdivFrån: Brian Lloyd br...@lloyd.com /divdivDatum:2014-01-04 19:26 (GMT+01:00) /divdivTill: Discussion of precise time and

Re: [time-nuts] Trimble Thunderbolt 1pps

2014-01-04 Thread Tom Van Baak
Pulse quality of single-ended RS232 over unbalanced twisted pair is going to be pretty bad beyond a few feet. If you want to transport the 1pps over twisted pair there are a couple of options: Hi Brian, I suspect this is true at one level, but what would be helpful to to *quantify* it. What

Re: [time-nuts] Trimble Thunderbolt 1pps

2014-01-04 Thread Chris Albertson
On Sat, Jan 4, 2014 at 1:51 PM, Tom Van Baak t...@leapsecond.com wrote: Pulse quality of single-ended RS232 over unbalanced twisted pair is going to be pretty bad beyond a few feet. If you want to transport the 1pps over twisted pair there are a couple of options: Hi Brian, I suspect

Re: [time-nuts] Trimble Thunderbolt 1pps

2014-01-04 Thread Brian Lloyd
On Sat, Jan 4, 2014 at 3:51 PM, Tom Van Baak t...@leapsecond.com wrote: Pulse quality of single-ended RS232 over unbalanced twisted pair is going to be pretty bad beyond a few feet. If you want to transport the 1pps over twisted pair there are a couple of options: Hi Brian, I suspect

Re: [time-nuts] WWV/WWVH audio simulator?

2014-01-04 Thread Peter Monta
Hi Jayson, You may already be aware of it, but there's a set of historical recordings of WWV and WWVH, covering 1955 to 2005: http://www.myke.me/atthetone/ As for the simulation, I'm sure it would be easy to do the tones and clicks, but the voice announcements would need a considerable amount