Re: [time-nuts] Efratom LPRO Rubidium

2008-08-20 Thread VK3FGJM
Hi Charles, Would it be possible to share the software with other, or could we look at some screen shots for a start? Like Tom, I have a Lucent Rb and XO set, and I have given up trying to reverse engineer it's bowls. Regards Gerald VK3FGJM -Original Message- From: [EMAIL PROTECTED] [

[time-nuts] Efratom LPRO Rubidium

2008-08-20 Thread Tom Bales
Charles, I see from a posting of yours on time-nuts that you have the Lucent RFTGm-Rb and RFTGm-XO pair and the monitor program to go along with it. I just recently got one of these setups, and it seems to be working (Rb says "online," XO says "standby," Do you have the Lucent monitoring sof

[time-nuts] AT&T(Lucent) ED2R849-31 G4

2008-08-20 Thread N3IZN
Any one ever dig in to one of these? Anything useful in there? It has a 10 Mhz output. Thanks **It's only a deal if it's where you want to go. Find your travel deal here. (http://information.travel.aol.com/deals?ncid=aoltrv000547) __

Re: [time-nuts] FW: IIMorrow GPS units non-functional since Sunday

2008-08-20 Thread Jim Lux
Quoting Jim Palfreyman <[EMAIL PROTECTED]>, on Tue 19 Aug 2008 11:24:31 PM PDT: > Wow. > > Don't tell me people still use miles? Nautical or otherwise? > > What's wrong with the good old kilometre? > > Jim Simple...Britannia ruled the seas, while the Cassinis measured the earth. Why the prim

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread wa3frp
Hi Mike, Yes I feel that you have nailed the root cause of the failure. That explains the failures observed here. Thanks and Best Regards, Russ -Original Message- From: Mike Monett <[EMAIL PROTECTED]> To: time-nuts@febo.com Sent: Wed, 20 Aug 2008 5:14 am Subject: Re: [time-nuts] Rest

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread phil
Bruce, nuf said, in that case it's the expansion of toluene, not the mercury. Can easily see how that would work, actually rather ingenious. As always, more than one way to do something. Thanks, Phil - Original Message - From: "Bruce Griffiths" <[EMAIL PROTECTED]> To: "Discussion of pr

Re: [time-nuts] FW: IIMorrow GPS units non-functional since Sunday

2008-08-20 Thread Arnold Tibus
On Wed, 20 Aug 2008 16:24:31 +1000, Jim Palfreyman wrote: >Wow. >Don't tell me people still use miles? Nautical or otherwise? >What's wrong with the good old kilometre? >Jim Jim, it is quite easy to give an answer to your question: Even using GPS geographic coordinates are still (and will b

Re: [time-nuts] FW: IIMorrow GPS units non-functional since Sunday

2008-08-20 Thread Thomas A. Frank
>>> It turns out every one of these units stopped working sometime >>> Sunday and >>> they don't fully understand the cause or the fix as of yet. Good >>> news, I >>> don't have a malfunctioning unit. >> >> Funny, but to me, having the thing stop working qualifies as >> "malfunctioning". >> >> Jus

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread Bruce Griffiths
phil wrote: > Bruce, what was the diameter or how was the column situated to give those > resolutions. > > > > Phil The thermoregulator consisted of a horizontal ring tube filled with toluene connected to a 13" long J -tube filled with mercury and containing a capillary section at the top. T

Re: [time-nuts] 5061A ion pump P/S problem

2008-08-20 Thread Morris Odell
Corby, Thanks very much for this advice. It turned out the spare unit was quite OK after all. It's installed as I type, and the 5061A is locked beautifully and showing the same freq as the Z3815A GPSDO on a HP 5345 counter. A check of the "flop" parameters shows the Cs tube is nice & healthy an

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread phil
Bruce, what was the diameter or how was the column situated to give those resolutions. - Original Message - From: "Bruce Griffiths" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" Sent: Wednesday, August 20, 2008 6:19 AM Subject: Re: [time-nuts] Restori

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread Bruce Griffiths
phil wrote: > Russ > Do you have a photo, would it be possible to build? I have a few flasks of > mercury and a few 10's of thousands of mercury wetted relays that some could > be cannibalized for electrodes. The trick here is how thin is that column of > mercury. My guess the thinner the column, t

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread phil
Russ Do you have a photo, would it be possible to build? I have a few flasks of mercury and a few 10's of thousands of mercury wetted relays that some could be cannibalized for electrodes. The trick here is how thin is that column of mercury. My guess the thinner the column, the finer the resolutio

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread Mike Monett
[EMAIL PROTECTED] wrote: >Phil, > I didn't believe that the thermoswitch was the problem, at first, > chiefly because of the simplicity of operation. Eventually, after > checking wiring, a carbon resistor that is in series with the > thermoswitch, and components around the

Re: [time-nuts] FW: IIMorrow GPS units non-functional since Sunday

2008-08-20 Thread Magnus Danielson
> In message <[EMAIL PROTECTED]>, > "Jim > Palfreyman" writes: >>When I fly in a commercial plane, the display in front of me shows its >> speed >>in km/h and height in metres. The pilot announces the same. >> >>I would have thought that if any group of people could convert quickly it >>would be ai

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread wa3frp
Phil, I didn't believe that the thermoswitch was the problem, at first, chiefly because of the simplicity of operation. Eventually, after checking wiring, a carbon resistor that is in series with the thermoswitch, and components around the inner oven control circuitry, I removed the thermoswi

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread phil
Russ, Also could it be a cold solder joint on the tubes connections, possibly look good but have a high resistance. That could account for an intermittent as you are describing. Sometimes we overlook the simplest of things. Phil - Original Message - From: "phil" <[EMAIL PROTECTED]> To:

Re: [time-nuts] FW: IIMorrow GPS units non-functional since Sunday

2008-08-20 Thread Mike Monett
"Jim Palfreyman" <[EMAIL PROTECTED]> wrote: > >Wow. > >Don't tell me people still use miles? Nautical or otherwise? > >What's wrong with the good old kilometre? > >Jim Tradition. TWA and Pan American opened the long-range routes before WWII. So all the worldwide aviation standards used whatever th

Re: [time-nuts] FW: IIMorrow GPS units non-functional since Sunday

2008-08-20 Thread phil
Although English is the worlds standard language for pilots. "intelligent" perhaps, but not all, we put two pilots away for embezzling, one was buying planes to rent and putting them in his name rather than the company name. That's not very intelligent ! - Original Message - From: "Jim

Re: [time-nuts] Restoring GR 1120-AB Frequency Standard

2008-08-20 Thread phil
Russ, In other words, you sound like you are not 100% sure it's the switch. A shame you couldn't graph voltage and current going to the switch as it cycles. Is it possible a cap or something else is intermittently failing in the circuit. Again I'm assuming with that resistance there is something

Re: [time-nuts] FW: IIMorrow GPS units non-functional since Sunday

2008-08-20 Thread Poul-Henning Kamp
In message <[EMAIL PROTECTED]>, "Jim Palfreyman" writes: >When I fly in a commercial plane, the display in front of me shows its speed >in km/h and height in metres. The pilot announces the same. > >I would have thought that if any group of people could convert quickly it >would be airline pilots.

Re: [time-nuts] FW: IIMorrow GPS units non-functional since Sunday

2008-08-20 Thread Jim Palfreyman
When I fly in a commercial plane, the display in front of me shows its speed in km/h and height in metres. The pilot announces the same. I would have thought that if any group of people could convert quickly it would be airline pilots. They are intelligent and highly trained people - not likely to