They appear to be spot-on here in Melbourne.
Morris
Date: Sun, 3 Jan 2010 12:14:05 +1100
From: Jim Palfreyman jim77...@gmail.com
Subject: [time-nuts] ABC time signals in Tasmania/Australia wrong
For the Down Under nuts,
The ABC radio time signals in Hobart are one second out. Is it a national
Well, it then looks like it is going through this rapid loop of giving
up processing power and asking for it again immediately, and on my
system there is plenty of spare capacity so it gets its thread back
again. Perhaps this is what is generating all the masses of system
calls as the balance
Well I can do any testing on my main systems running under OpenSuse
but I'm also quite happy to build up other distributions to test it.
What does the client end code look like wrt display, how is that
currently being done?
Steve Rooke
2010/1/1 Bob Camp li...@cq.nu:
Hi
I took a look at the
Hi,
I don't know whether the ABC signal you are referring to is TV, AM, FM
or DAB but, if it is digitally networked, it isn't uncommon for time
signals to be out by a second or so. Before Christmas, here in Sheffield
(UK), the digital clock on my bedside DAB radio was well over seven
seconds slow
It polls the serial port continually :-(
Dave
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Steve Rooke
Sent: 03 January 2010 12:00
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Lady Heather
The mainframe power transistors are NOT darlingtons. They are plain NPN/PNP
power transistors with non-standard pinouts.
The non-high power slots are rated at least 15W (The PS503A power supply can
drop the 33V DC lines to 0V at 0.4A). The high power slots use normal TO-3
transistors rated
Hi Gang;
Tomorrow is the beginning of the count down for Loran C termination, let's see
how long it takes for the gov't to act on this one. I have my receivers running.
That's change we can believe in!
Regards;
Rich
___
time-nuts mailing list --
Hello everyone! Hope your new year is going well so far.
I have two Tbolts (one from TAPR and one from another guy), and neither one is
locking on satellites.
My set up is a Lucent antenna, about 12 feet of LMR400, a Symmetricom 4 way
Active SmartSplitter, then about 3 feet of LMR 195 to my
Mark wrote:
The mainframe power transistors are NOT darlingtons. They are plain
NPN/PNP power transistors with non-standard pinouts.
The TO-127 pinout is ECB -- most other plastic power transistor
packages are BCE.
I just pulled the cover off a TM503, and the 151-0349-00 (and
These external transistors are shown on the PS503 as single transistors,
and they are driven by a single stage transistor from an op amp.The
external pass transistors for each plug-in could use NTE182 (NPN) and
NTE183(PNP). IMHO, the hfe of the NTE devices will be entirely adequate,
and they're
If the TV station was transmitting digital and they were passing a
network signal, a 5 second delay is possible.
[snip long list of places where delays happen]
With all of the processing, encoding and decoding of the digital
signal, a 5 second delay is not unheard of.
5 seconds is a long
Rich like you I have my Austrons up and a pair of HP3586 receivers also.
Since it could be Jan 4th UTC. Maybe they will go silent in in about 3
hours from now. See if I can hear the European LORAN stations.
I have been logging the frequency for about a month as far as a reference
goes. Seems
The parts are definitely not darlingtons (but then, I have only repaired over
1000 TM500 modules and mainframes...). Both junctions measure around 0.545V.
Just about any general purpose power transistor will work just fine. You want
devices rated at least 60V and 20W. I would tend to
So what...
Actually Heather does not poll the serial port continually. It uses the
Windows interrupt driven serial I/O routines that fill a big buffer in the
background.
What is does do is continually ask give me a serial port character if you have
one. It makes no practical difference
Well its 4 jan 2010 and the loran chains at the moment are running.
Who knows no real detail on the coast guard site.
On Sun, Jan 3, 2010 at 4:43 PM, paul swed paulsw...@gmail.com wrote:
Rich like you I have my Austrons up and a pair of HP3586 receivers also.
Since it could be Jan 4th
Thanks everyone for some good information. Here is what I know for sure from
testing, observation and more searching.
1) The devices in any of my TM mainframes are NOT Darlingtons.
2) The actual Q12 device in my TM501 is stamped SJE924 (Tek PN 151-0349-00)
These two facts seem contradictory
Now at 1745 MST in Tucson, AZ I can hear the usual Loran signal on
100 kHz (probably the one in Searchlight, Nevada. But looking at the
Wiki article on Loran I see that it was apparently to be shut down
AFTER 4 January, not ON 4 January, with even that predicated on a
finding by the
Homeland Security is likely busy searching underwear at the moment.
-John
===
Now at 1745 MST in Tucson, AZ I can hear the usual Loran signal on
100 kHz (probably the one in Searchlight, Nevada. But looking at the
Wiki article on Loran I see that it was apparently to be shut
Mark wrote:
The problem with ordering from Sphere is the prices. Their parts
tend to be expensive and the shipping is a killer ($22+ last time I
ordered) for a simple transistor. You can buy suitable replacements
for under $0.50 each.
Suitable in the sense of Pd, Vceo, Hfe, and Ft, yes.
Don wrote:
1) The devices in any of my TM mainframes are NOT Darlingtons.
2) The actual Q12 device in my TM501 is stamped SJE924 (Tek PN 151-0349-00)
These two facts seem contradictory with copied Motorola Data Sheet
info but I going with what I see in front of me.
If you have a device
2010/1/4 Mark Sims hol...@hotmail.com:
As far as the time slicing goes, the code is continually doing Sleep(0)
calls. These give the time slice back to Windows. You can't get much more
multitask friendly than that.
If Windows has nothing better to do, it gives the time back to Heather
Have you tried running it directly to the antenna, minus the splitter?
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of James R. Gorr
Sent: Sunday, January 03, 2010 2:14 PM
To: time-nuts@febo.com
Subject: [time-nuts] thunderbolts
Hmmm its the same person at DHS thats been in the news lately on the delta
flight.
I might guess her hands are full with the fully functioning airport
security.
I believe that I did see a note that DHS had signed off as LORAN not being
needed.
The president wants it off and she is his appointee.
Hello Jamie,
about a month ago there was a long thread that thoroughly discussed the
problems folks have been seeing when running Thunderbolts through splitters.
You may want to search the archive, and take a look..
bye,
Said
In a message dated 1/3/2010 17:42:07 Pacific Standard Time,
Frankly, screw the idea of ordering $30 transistors or paying big shipping
charges from Canada. Just go to Ebay, find a cheap TM50X power module,
bingo! you're in business! Either use the module as-is or salvage the
transistors from it and repair the TM501.
TM501 modules are rather hard
I disagree. On modern desktops this behavior will prevent Vista and
Win7 from throttling back the CPU. Not being able to throttle back the
CPU will make it run hotter and draw more power, which is likely to
produce more noise (because the cooling fans need to be sped up) and
heat. Yeah,
It actually should be sleeping for more like 100 milliseconds per rendered
frame, rather than doing a Sleep(0) as it does now. That would help a great
deal with the power-consumption issue. The command-line option Mark added
should be useful in that regard.
What I'm not sure about, though, is
Does anyone have any insight as to how this affects the Canadian
chains? For those of us in the northern US, they may still be
useable. It will be a shame to lose Nantucket and Seneca.
Thanks,
David in NH
At 03:40 PM 1/3/2010, you wrote:
Hi Gang;
Tomorrow is the beginning of the count
Hi
I think you have just found the gotcha in all of this.
The chains that are shared with Canada probably are under some kind of treaty.
I don't remember hearing anything about Canada shutting down Loran-C. If the US
stations go down without Canada shutting down Loran-C as well, then that's
On 1/3/2010 5:53 PM, time-nuts-requ...@febo.com wrote:
It's not an issue, except possibly vis-a-vis battery life in a laptop.
I haven't looked at the source code, but there are other concerns with
the while (true) { checkStuff(); Sleep(0); } approach.
According to the TFM, Sleep(0) is
Bob,
That last comment may be why I read everything you write.
Happy new year, if you can find any happiness in it . . .
Bill Hawkins
-Original Message-
From: Bob Camp
Sent: Sunday, January 03, 2010 10:02 PM
Hi
I think you have just found the gotcha in all of this.
The chains that
Hello and Happy New Year,
I've always wanted to get a current probe and amp like those just because of
the magic Mark is talking about. But, specially compared to almost any other
TM50X plugin, their prices are difficult to justify. Why is it that they are so
expensive?? ( how much did
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