Re: [time-nuts] Stanford RS620 Acting up

2012-10-11 Thread Ulrich Bangert
I had similar difficulties with my SR620. I rewired the cables to the power switch so that the out position now switches the power on and the in position switches the power off. This has worked for me in the last 4 years. Ulrich Bangert -Ursprüngliche Nachricht- Von:

[time-nuts] NIST get's Nobel price

2012-10-11 Thread Magnus Danielson
Dear all, Since nobody seems to have pointed it out, a NIST time and frequency lab employee in Boulder, Dave Wineland has been awarded the Nobel price in physics, together with Serge Haroche. http://www.nist.gov/pml/div688/ http://www.nobelprize.org/nobel_prizes/physics/laureates/2012/ I

Re: [time-nuts] NIST get's Nobel price

2012-10-11 Thread Hal Murray
http://m.npr.org/news/Science/162591206 Of course, Nobel Prize winners get about $1.2 million and the winners of the physics Nobel will split that. At a news conference today in Boulder, Colorado, Dave Wineland said he has no idea what he will do with the money. As Boulder's Daily Camera

Re: [time-nuts] 57600 baud rate with Basic etc

2012-10-11 Thread shalimr9
Most computers and RS-232 interface chips made in the last 10 years support 0-5V as well as +/- 12V. Didier KO4BB Sent from my Droid Razr 4G LTE wireless tracker. -Original Message- From: Bob Camp li...@rtty.us To: 'Discussion of precise time and frequency measurement'

Re: [time-nuts] NIST get's Nobel price

2012-10-11 Thread Edgardo Molina
Dear Magnus, Good morning. We popped a champagne bottle (well, a toast with a cup of coffee and cookies actually) at CENAM as we heard about the news! Congratullations to NIST, Dave, Serge and all the Time and Frequency community. It is really an awe inspiring event. Who's next? Regards!

[time-nuts] Oscillator items for sale OCXO

2012-10-11 Thread Paul A. Cianciolo
Hello Folks, I have for sale 2 Vectron Model 204-888 OCXO's 5 MHzSquare can and uses an SMA output connector These 2 were used as the reference oscillators in a 14 Ghz satellite uplink. Best offer plus shipping. I will offer other oscillators both OCXO and rubidium I have if there are

Re: [time-nuts] Oscillator items for sale OCXO

2012-10-11 Thread Azelio Boriani
Any BVA left? On Thu, Oct 11, 2012 at 5:07 PM, Paul A. Cianciolo pa...@snet.net wrote: Hello Folks, I have for sale 2 Vectron Model 204-888 OCXO's 5 MHzSquare can and uses an SMA output connector These 2 were used as the reference oscillators in a 14 Ghz satellite uplink. Best

[time-nuts] rs232

2012-10-11 Thread Don Latham
Ok, if you don't like RS232: http://ics.nxp.com/support/documents/interface/pdf/UFm-I2C-Gaming.pdf Don -- Neither the voice of authority nor the weight of reason and argument are as significant as experiment, for thence comes quiet to the mind. De Erroribus Medicorum, R. Bacon, 13th century.

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread Azelio Boriani
Please take care that the S14WI is smart: if it doesn't sense a DC current on the antenna port then it reports that to the user ports and I think it can even power off the internal amplifier, this can account for the observed loss instead of the gain. On Thu, Oct 11, 2012 at 11:20 PM, Magnus

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread Magnus Danielson
On 10/12/2012 12:16 AM, Azelio Boriani wrote: Please take care that the S14WI is smart: if it doesn't sense a DC current on the antenna port then it reports that to the user ports and I think it can even power off the internal amplifier, this can account for the observed loss instead of the

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread paul swed
Magnus what would the possibility be of measuring an 8 way satellite splitter? The $7 wonders with dc pass through. That looks like a very nice network analyzer you have. Regards Paul WB8TSL On Thu, Oct 11, 2012 at 7:05 PM, Magnus Danielson mag...@rubidium.dyndns.org wrote: On 10/12/2012 12:16

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread Azelio Boriani
To test this kind of items, you have to play with DC-blocks and bias-tees. Rather tedious but necessary. I know as at times I have to test questionable GPS antennae that return after lightning strikes. On Fri, Oct 12, 2012 at 1:09 AM, paul swed paulsw...@gmail.com wrote: Magnus what would the

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread paul swed
Azelio, Not at all the satellite splitters can be smart or passive. I use a passive so it has 1 dc path. But all of the other ports have dc blocks built in. The smarter units will direct the highest DC to the antenna. Its really diodes and I stay clear of those. To smart for there own good. Plus

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread Magnus Danielson
On 10/12/2012 01:15 AM, Azelio Boriani wrote: To test this kind of items, you have to play with DC-blocks and bias-tees. Rather tedious but necessary. I know as at times I have to test questionable GPS antennae that return after lightning strikes. I did check that the supplied voltages is

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread Ed Palmer
The HP / Symmetricom 58536A has a gain spec of 0 +-3 db so something is clearly wrong. Did you power it through a spare port? Also, the isolation spec is 26 db @ L1. The 50 db spec is for L1 +- 40 MHz. I looked inside mine and found that there's an input filter(-1db), 21 db amp, 4 way

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread Peter Gottlieb
A stupid question, but why would you bother testing an antenna? I would think with antennas so cheap and labor expensive it would be far more efficient to make a single site visit and simply replace the suspect antennas with new ones. Peter On 10/11/2012 7:15 PM, Azelio Boriani wrote: To

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread Edgardo Molina
Dear Peter, If your budget is $10 for an R.F. Project, spend $1 on the radio and $9 on the antenna. At least me, if I troubleshoot by replacing parts, I would be missing the fun, experience and learning out of it. Just my 0.02 cents Regards, Edgardo Molina Direccción IPTEL www.iptel.net.mx

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread Magnus Danielson
On 10/12/2012 02:25 AM, Ed Palmer wrote: The HP / Symmetricom 58536A has a gain spec of 0 +-3 db so something is clearly wrong. Agreed. I didn't have the spare energy to follow up on that. Did you power it through a spare port? Yes. Port 4. Will look at that again. Also, the isolation

[time-nuts] A nice auction in the Seattle area

2012-10-11 Thread DaveH
Some test equipment and o-scopes are being auctioned off November 15th in Kenmore (just North of Seattle) Murphy is a great auction house. http://murphyauction.com/Auction/Details/414 I'm planning to be there. DaveH ___ time-nuts mailing list --

Re: [time-nuts] A nice auction in the Seattle area

2012-10-11 Thread Don Latham
Be vewy vewy careful! This auction run by Murphy... DaveH Some test equipment and o-scopes are being auctioned off November 15th in Kenmore (just North of Seattle) Murphy is a great auction house. http://murphyauction.com/Auction/Details/414 I'm planning to be there. DaveH

Re: [time-nuts] GPS splitter measurements

2012-10-11 Thread bg
Paul, Azelio, Not at all the satellite splitters can be smart or passive. I use a passive so it has 1 dc path. But all of the other ports have dc blocks built in. The smarter units will direct the highest DC to the antenna. Its really diodes and I stay clear of those. To smart for there own