Re: [time-nuts] Clocks for Audio gear

2012-05-13 Thread Sanjeev Gupta
On Fri, May 11, 2012 at 1:27 AM, Chris Albertson albertson.ch...@gmail.comwrote: I've alway have thought that if nanosecond level jitter is bad then breathing while listening must be really bad. If you inhale the path length from your ear to the speaker changes at the microsecond level.

Re: [time-nuts] Time Nuts at the Dayton Hamvention

2012-05-13 Thread John Ackermann N8UR
I'll either be at the TAPR booth inside (booths 455-458, in the same vicinity as the ARRL and AMSAT booths), wandering the flea market searching for The Great Bargain, or hanging out at the flea spaces Bob mentioned. We'll have a T2-Mini demo running at the TAPR booth (and product available for

[time-nuts] Shera Controller - U7

2012-05-13 Thread Kevin Staley
Hi All I am building the Brooke Shera GPSDO controller board but have run into problems sourcing U7. I have tried without success for a few days to obtain or at least find a source of: ECS300S-24 XC 313 DCO 2400 ECS-240-3-C3X1A EXO 35M I have tried RS Components, Farnell, Mouser,

Re: [time-nuts] Shera Controller - U7

2012-05-13 Thread Chris Albertson
Maybe you can remind us what U7 is. Someplace I have a schematic but not handy right now. On Sun, May 13, 2012 at 5:24 AM, Kevin Staley kevin.sta...@virgin.net wrote: Hi All I am building the Brooke Shera GPSDO controller board but have run into problems sourcing U7. Chris Albertson Redondo

Re: [time-nuts] Shera Controller - U7

2012-05-13 Thread EWKehren
It is the Xtal with 1/4 Bert Kehren In a message dated 5/13/2012 10:52:47 A.M. Eastern Daylight Time, albertson.ch...@gmail.com writes: Maybe you can remind us what U7 is. Someplace I have a schematic but not handy right now. On Sun, May 13, 2012 at 5:24 AM, Kevin Staley

Re: [time-nuts] Shera Controller - U7

2012-05-13 Thread J. L. Trantham
It is an 8 pin DIP, 24 MHz oscillator with an onboard divide output in order to provide a dual output oscillator. It is an ECS-300CX-240 and DigiKey lists it as obsolete since 2009. They say 'call'. They also show stock on the 12.8 MHz chip. I wonder if that would work? Joe -Original

Re: [time-nuts] Shera Controller - U7

2012-05-13 Thread Chris Albertson
On Sun, May 13, 2012 at 8:11 AM, J. L. Trantham jlt...@att.net wrote: It is an 8 pin DIP, 24 MHz oscillator with an onboard divide output in order to provide a dual output oscillator.  It is an ECS-300CX-240 and DigiKey lists it as obsolete since 2009.  They say 'call'. Sounds like a you could

Re: [time-nuts] Shera Controller - U7

2012-05-13 Thread Kevin Staley
Hi all Thanks for the many responses. It would seem that U7 is pretty rare. I think I will be going with a 24 MHz Can oscillator and a separate 6MHz source for the PIC either divided from the 24MHz oscillator or a separate oscillator. Thanks again Kevin -Original Message- From:

Re: [time-nuts] Tbolt failure modes

2012-05-13 Thread Said Jackson
A radical procedure (short of replacing the Trimble Asic) is to take a brush and brush the pins on the pcb. Hard, but not hard enough to damage the board or the pins. Then clean the pcb with alcohol and compressed air. Trimble uses RoHs solder, which will eventually generate tin whiskers that

[time-nuts] WWVB on the air? Looked at the site it says it is.

2012-05-13 Thread paul swed
Hello to the group Can't seem to pickup wwvb. Have several different rcvrs and antennas. Its either really weak or not there and been that way since Friday. Looked at the nist site and no real notice of any sort. Thanks Paul ___ time-nuts mailing list --

Re: [time-nuts] WWVB on the air? Looked at the site it says it is.

2012-05-13 Thread Chris Albertson
On Sun, May 13, 2012 at 12:27 PM, paul swed paulsw...@gmail.com wrote: Hello to the group Can't seem to pickup wwvb. Have several different rcvrs and antennas. Its either really weak or not there and been that way since Friday. Where are you located? Maybe the lack of signal is related to

Re: [time-nuts] WWVB on the air? Looked at the site it says it is.

2012-05-13 Thread Shaun Merrigan
Just checked my Spectracom and it is locked and time synced at 19:48 UTC from Edmonton, AB. Shaun M Sent from my iPad3 No Regret On 2012-05-13, at 13:27, paul swed paulsw...@gmail.com wrote: Hello to the group Can't seem to pickup wwvb. Have several different rcvrs and antennas. Its

Re: [time-nuts] WWVB on the air? Looked at the site it says it is.

2012-05-13 Thread paul swed
Chris east coast the signal is indeed there at -128db thats easily 30 plus db lower then normal. Or its Englands 60 kc MSF station that I am hearing. (quite possible) On Sun, May 13, 2012 at 3:43 PM, Chris Albertson albertson.ch...@gmail.comwrote: On Sun, May 13, 2012 at 12:27 PM, paul swed

Re: [time-nuts] WWVB on the air? Looked at the site it says it is.

2012-05-13 Thread paul swed
Shaun Thanks. Boy perplexing. Regards Paul. On Sun, May 13, 2012 at 3:51 PM, paul swed paulsw...@gmail.com wrote: Chris east coast the signal is indeed there at -128db thats easily 30 plus db lower then normal. Or its Englands 60 kc MSF station that I am hearing. (quite possible) On Sun,

Re: [time-nuts] WWVB on the air? Looked at the site it says it is.

2012-05-13 Thread Max Robinson
It's OK here in southern Kentucky. Regards. Max. K 4 O DS. Email: m...@maxsmusicplace.com Transistor site http://www.funwithtransistors.net Vacuum tube site: http://www.funwithtubes.net Woodworking site http://www.angelfire.com/electronic/funwithtubes/Woodworking/wwindex.html Music site:

Re: [time-nuts] Tektronix Manuals

2012-05-13 Thread paul swed
Good site had not run into it before Thanks On Sat, May 12, 2012 at 6:54 PM, J. Forster j...@quikus.com wrote: Hi, I fround this site this evening: http://w140.com/tekwiki/wiki/Main_Page The scans are not as good as some commercial pones, but the price is right. It has manuals that are

Re: [time-nuts] Shera Controller - U7

2012-05-13 Thread shalimr9
A 74AC74 in SO-14 package mounted dead bug style will make a handy /4 that is no bigger than most crystal oscillators. If that's still too big, you can go with the TSSOP, but no coffee for you for a week prior to soldering that baby :) Didier KO4BB Sent from my BlackBerry Wireless thingy

Re: [time-nuts] Shera Controller - U7

2012-05-13 Thread J. L. Trantham
I have always been interested in trying to improve the look of the 'dead bug' style. How about a small PCB with an 8 pin DIP connector that is used to mount the oscillator, the divide by 4 and get power, ground and provide 24 MHz and 6 MHz outputs to the 8 pin DIP. That way, the 'little

[time-nuts] Manual or Software for FEI Pico Sync?

2012-05-13 Thread Brooke Clarke
Hi: Is there a manual, data sheet, docs of any kind or software for the FEI Pico Sync? http://www.prc68.com/I/FEIFS.shtml#Picosync -- Have Fun, Brooke Clarke http://www.PRC68.com http://www.end2partygovernment.com/Clarke4Congress.html ___