[time-nuts] FOR SALE: Brandywine GPS-4 Units & Antennas - 2 sets available
Hello Everyone, I have two more Brandywine GPS-4 units available with brand new Panasonic antennas and coax kits. Same price as last time... $400 for the GPS and $40 for the antenna kit. As usual, shipping is always free (US only. International shipping will be additional). I prefer personal checks or money orders but will accept paypal for an additional 3%. If anyone is interested, please send me an email off the list. Regards, Scott KB1FXY ssyb...@kb1fxy.us ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] hp5061a/b no I beam current
How's the voltage across the hot-wire ionizer, and the mass spec voltage? I assume the other meter readings are within the tolerances given in the manual? Hopefully it's not an open ionizer filament. I bought one tube on eBay awhile back that had good vacuum but no ionizer continuity. -- john, KE5FX > -Original Message- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com]on > Behalf Of paul swed > Sent: Sunday, October 18, 2009 9:25 AM > To: time-nuts@febo.com > Subject: [time-nuts] hp5061a/b no I beam current > > > Lets see if this works. > I am new to the time-nuts user group > Just obtained a HP 5061a CS standard. Pumps down very well to 0 (Hard to > believe) But it did. > CS oven comes up to temp. But in operation no I beam current. > Noticed that the tube states -2083V multiplier. But its > regulating to -1606V > can adjust to 2083. > Still no current. Also no 2nd harmonic but with No I that's what I expect. > Its an interesting unit from the naval observatory. > I have the traditional 5061 a service manual. Its halfway between > a A and a > B unit. > As example A15 power reg is using ICs and I found a website with that > schematic. > The CS control board A11 also is using ICs at least 3 switching > supplies us > SG3524s > I would like to see a schematic of this if anyone has it. Though I suspect > that the CS board is fine. > I want to check several of the voltages though. > Any help would be appreciated. > Thanks > ___ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP 5370B ROM images - success
Mike S wrote: Just a quick report. The 5370B ROM image seems to work just fine in a 5370A. At least one GPIB sequence which would cause the original firmware to hang now seems to work fine. I put up a page describing how to change to the newer firmware, based mostly upon an earlier post by Mark Sims: http://www.flatsurface.com/5370A/index.html ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. Great job - I might do this to my A model - first I have to get the rest of it working though. The only improvement I would suggest is installing a socket into the board socket and soldering to it rather than soldering onto the ic. One can also still remove the ic later Have you diff'ed the two rom images to see how much code changed? Tim ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] EU opens up Egnos system for public use
Hi Alberto - have you seen the ESA website describing the system: http://www.esa.int/esaNA/egnos.html Regards, Peter On Fri Oct 16 16:49 , Alberto di Bene sent: >Anybody has some more info about this ? > >http://tinyurl.com/yjeaodn > >Alberto I2PHD ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP 5370B ROM images - success
At 12:28 PM 10/18/2009, Sylvain RICHARD wrote... What exactly was fixed by using the newer firmware? Random hangs or specific bugs? It's not documented, AFAIK. Mine seemed to hang pretty regularly if I tried to do a GPIB interface clear/device clear while it was in talk mode and in the middle of a measurement. That seems to have gotten better with the newer firmware, but I noticed one new bug - I used to be able to do an "ST8ST1" to set the reference and immediately go back to "mean." With the newer firmware, it seems I have to pause between the two, or the reference isn't set correctly. The firmware Mark so kindly provided is from a unit with date code 2332A (32nd week of 1983), which is a fairly early revision of the 5370B (1st rev was 2316A, 16th week of 1983). 5370B revisions went to at least 2904A (4th week of 1989). There may be even newer firmware which has more bug fixes. I put cksum and md5sum for this image on the web page, if someone with a newer 5370B wants to compare with what they have. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP 5370B ROM images - success
Mike S wrote: Just a quick report. The 5370B ROM image seems to work just fine in a 5370A. At least one GPIB sequence which would cause the original firmware to hang now seems to work fine. I put up a page describing how to change to the newer firmware, based mostly upon an earlier post by Mark Sims: http://www.flatsurface.com/5370A/index.html Very neat mod, compliments! Being able to use the DIP switch to switch between old and new ROM version is very neat. Getting to the 2764 level should help. Cheers, Magnus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP 5370B ROM images - success
Mike S a écrit : Just a quick report. The 5370B ROM image seems to work just fine in a 5370A. At least one GPIB sequence which would cause the original firmware to hang now seems to work fine. I put up a page describing how to change to the newer firmware, based mostly upon an earlier post by Mark Sims: http://www.flatsurface.com/5370A/index.html Hi, I've archived this page just in case. What exactly was fixed by using the newer firmware? Random hangs or specific bugs? Regards, -- Sylvain RICHARD ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] hp5061a/b no I beam current
Lets see if this works. I am new to the time-nuts user group Just obtained a HP 5061a CS standard. Pumps down very well to 0 (Hard to believe) But it did. CS oven comes up to temp. But in operation no I beam current. Noticed that the tube states -2083V multiplier. But its regulating to -1606V can adjust to 2083. Still no current. Also no 2nd harmonic but with No I that's what I expect. Its an interesting unit from the naval observatory. I have the traditional 5061 a service manual. Its halfway between a A and a B unit. As example A15 power reg is using ICs and I found a website with that schematic. The CS control board A11 also is using ICs at least 3 switching supplies us SG3524s I would like to see a schematic of this if anyone has it. Though I suspect that the CS board is fine. I want to check several of the voltages though. Any help would be appreciated. Thanks ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] HP 5370B ROM images - success
Thanks, Mike. I've archived that page along with the firmware, just in case. Nice work, BTW! *** REPLY SEPARATOR *** On 18-Oct-09 at 11:44 mi...@flatsurface.com wrote: >Just a quick report. > >The 5370B ROM image seems to work just fine in a 5370A. At least one >GPIB sequence which would cause the original firmware to hang now seems >to work fine. > >I put up a page describing how to change to the newer firmware, based >mostly upon an earlier post by Mark Sims: >http://www.flatsurface.com/5370A/index.html > > >___ >time-nuts mailing list -- time-nuts@febo.com >To unsubscribe, go to >https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there. > >__ Information from ESET Smart Security, version of virus >signature database 4519 (20091018) __ > >The message was checked by ESET Smart Security. > >http://www.eset.com -=-=-=-=-=-=-=-=-=-=-=- Bruce Lane, Owner & Head Hardware Heavy, Blue Feather Technologies -- http://www.bluefeathertech.com kyrrin (at) bluefeathertech do/t c=o=m "Quid Malmborg in Plano..." ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
[time-nuts] HP 5370B ROM images - success
Just a quick report. The 5370B ROM image seems to work just fine in a 5370A. At least one GPIB sequence which would cause the original firmware to hang now seems to work fine. I put up a page describing how to change to the newer firmware, based mostly upon an earlier post by Mark Sims: http://www.flatsurface.com/5370A/index.html ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] Lady Heather and gpsd
On 10/17/2009 11:10 PM, Mark Sims wrote: At startup, Heather configures the Tbolt to broadcast the timing packets, GPS status, and sat info packets every second. Also several messages are sent to configure the user specified options and to request various status info. When a primary timing packet comes in, she sends a message requesting one of a couple dozen other status packets in sequence. The program does not wait for a response to a particular message. If the data line to the Tbolt was cut after the program was initialized, you would still get most of the data displays. The next version includes the ability to send a string of bytes to the unit upon initialization, and another string of bytes whenever the primary timing packet comes in. Thanks, Mark. This was the kind of information I was looking for. What status packets does she request after each primary timing packet? Which of the displays would I lose by cutting the data line after initialization? I will try experimenting with this today, but there is so much information there, I want to be sure what I will be missing. Is LH dependent on precise arrival of the primary timing packet? Would she notice if the packet were delayed but being intercepted by anothe program (like gpsd) and then forwarded on? I guess the question is: Does she measure anything about the timing of the packets or does she just process the data in the packets? Would you be able to share what data she requests after each primary timeing packet? I wonder if gpsd could be modified to send the requests for her so all LH would have to do is process in coming packets. I looked through the archives and did not see if anyone had asked you about a port to linux. Is that something you would consider? Thanks for a great program. Using LH is adding greatly to my time-nuttiness. 73, Tim N2LTQ ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
