In message 20120320031431.bf564800...@ip-64-139-1-69.sjc.megapath.net, Hal Mu
rray writes:
Could somebody please say a bit more about that area. My Shannon level
theory is weak.
Why does more transitions help anything? Or what does it help?
The transitions (where the phase change!) are what
On Mon, 19 Mar 2012 15:48:32 -0700
Tom Van Baak t...@leapsecond.com wrote:
While researching Geraldo's GLONASS question I ran across
an amazing set of pages. It's the best documented homemade
GPS+GLONASS receiver project I've ever seen. Although it's
somewhat old (mid 1990's) the text makes a
The transitions (where the phase change!) are what you correlate,
the more, the better S/N you get.
Yes---it's too bad that the proposed WWVB changes don't increase the
number of transitions at all. Could they not do the
low-modulation-index DCF77-like signal on top of the BPSK? That is,
put
On 03/20/2012 01:40 AM, John Miles wrote:
Not many hams have built and described as many interesting projects as he
has, but his work never got the exposure it deserved because few people
could find it (or read it), since so much of it was published in Soviet-era
Yugoslavia. I've had his
On 03/19/2012 07:51 PM, Geraldo Lino de Campos wrote:
The Samsung phone/tablet Galaxy NOTE has a combined GPS Glonass receiver,
of very good sensitivity. For instance, in an indoor location near windows,
it sees 7 GPS satellites, while a Chinese car GPS sees only 3. In addition,
it sees 4
Yes---it's too bad that the proposed WWVB changes don't increase the
number of transitions at all. Could they not do the
low-modulation-index DCF77-like signal on top of the BPSK? That is,
put some small, fast phase wiggles on top of the slow 180-degree
transitions (or 120-degree transitions
I embarked on liberty basic and in parallel java. Hmm wonder if thats why I
did not get as far since java for me has been a real detour. I had the HP
436 power meter working and getting data from an hp 5370 working. It really
at least in basic was a case of just doing the various commands at this
Jeeze the answers simple DCF is metric and wwvb in english.
They never work correctly together. ;-)
Regards
Paul
WB8TSL
On Tue, Mar 20, 2012 at 6:18 AM, Peter Monta pmo...@gmail.com wrote:
The transitions (where the phase change!) are what you correlate,
the more, the better S/N you get.
Hello The Net: (especially the LORAN-C listeners)
Right now my SRS FS700 Loran-C receiver is locked onto a signal.
GRI 89700 microseconds station: AUTO (M)
location: DANA, IL USA
Receiver locked
Tracking Loran-C signal
Receiver gain: 77dB
Noise margin: 39 dB
Loran Freq offset: -1.1E-10
Stan good documentation
I also copied it last night and posted.
Your loss of lock is due to the fact that these guys don't seem to work
past 11pm.
The system is not on at all times.
At least thats what I am seeing.
Regards
Paul
WB8TSL
Boston
On Tue, Mar 20, 2012 at 10:44 AM, Stan, W1LE
Hail to the US institutions which first stopped LORAN action long enough so
that pricy but apparently useless equipment could enter the shacks of European
time nuts for peanuts. Hail to the US institutions for reawakening LORAN so
that is is there for you US based time nuts again. The Tracor
On Mar 20, 2012, at 4:18 AM, Peter Monta wrote:
John, if you're reading this, would your receiver be capable of
recording with wider RF bandwidth? Your recordings made during the
test period have a bandwidth of about 30 Hz; can it go any wider? I
think your web page says you're using an
Sometimes, it pays to just sit on your butt. I never took my Austron loop
down or the 2100F out of the rack. :)))
-John
==
Hail to the US institutions which first stopped LORAN action long enough
so that pricy but apparently useless equipment could enter the shacks of
European
On 3/20/2012 10:51 AM, J. Forster wrote:
Sometimes, it pays to just sit on your butt. I never took my Austron loop
down or the 2100F out of the rack. :)))
-John
==
Alson have lockup of austron 2100R in northwest Illinois en42.
Don wa9ylp
Hail to the US institutions which first
Cape May is up at 2000Z
73,
Bill WA2DVU
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Seems that Cape May NJ is on also - is that part of the chain?
73, Bill WA2DVU
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Stan, W1LE
Sent: Tuesday, March 20, 2012 10:45 AM
To: Discussion of precise time and frequency measurement
Hi,
Is anybody keeping track of when each station is being seen? Some form of
schedule w/ time and GRIs would be a real help.
Thanks,
-John
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Perhaps a way to do this is by an attached Excel spreadsheet that can be
passed around and augmented as it goes.
FWIW,
-John
Hi,
Is anybody keeping track of when each station is being seen? Some form of
schedule w/ time and GRIs would be a real help.
Thanks,
-John
Gary,
I have a CT-A and a CV-A. They come apart by removing all the mounting nuts
of the 232 and GPIB sockets.
The 'upgrade' was focused on the IOTECH 488 boxes to convert all to a
controller. The conversation 'morphed' into 'NI boxes' by the thought that
they share a common firmware. I don't
The Wildwood, NJ tech center could be part of the 9930 or the 9960 chains.
It was only sporadically on. As testing dictated, not a normal operation
site.
I have not listened to these GRIs.
I hope to configure to use the single antenna with multiple Loran-C
receives.
Have to ponder that
Thanks Stan
I told the austron to use the master.
Suspect I would get a nice increase by using the secondary.
Will have to try that.
I built an active splitter some years ago to drive up to 6 rcvrs.
Essentially a single opamp gain stage then a opamp as a buffer for each
coax out. Simple dumb and
On 3/20/2012 9:24 PM, Stan, W1LE wrote:
The Wildwood, NJ tech center could be part of the 9930 or the 9960
chains.
It was only sporadically on. As testing dictated, not a normal
operation site.
I have not listened to these GRIs.
I hope to configure to use the single antenna with multiple
That helps a lot. Something I think you guys are using telepathy.
Yeah, running the NI serial box from Hyperterminal works. It was
something odd when I was trying to use software. Most likely pilot error.
I forgot who mentioned using VB, but back in the VB6 day, I found much
of the
Well, now you're speaking a foreign language.
However, give me a year or so, and, I might be able to follow.
Joe
-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of gary
Sent: Tuesday, March 20, 2012 10:16 PM
To: Discussion of precise
Back to GPIB, in the dark ages, I used one of the ICS boxes which used a Z80
to emulate an old HP desktop computer. For me, it was heaven. I just
translated the HP Basic to C.
Rocky Mountain Basic is a way to describe HP Basic out of Colorado without
getting sued.
HP BASIC was quirky, but
Has anyone used these guys? I have this model DMM and need it
calibrated. I can't afford to spend a fortune, as this is only for
hobby use.
http://www.teknetelectronics.com/Search.asp?p_ID=115pDo=DETAILHP%20-%20Agilent_3478A
Joe Gray
W5JG
___
Hi Joe;
They have been professional and fair in all my dealings with them.
Best Wishes;
Thomas Knox
Date: Tue, 20 Mar 2012 22:52:18 -0600
From: jg...@zianet.com
To: time-nuts@febo.com
Subject: [time-nuts] OT: calibration
Has anyone used these guys? I have this model DMM and need it
Both of mine came from flea markets. Around 2000. Well into the ebay
era, but you could still find stuff locally. Vendors think GPIB looks
like centronix, so they just dump the stuff.
Also in the dark ages was the HP Basic Language card. If you never heard
of it, you will probably groan. It
Scratch that comment about free Jbuilder. That was very 2009 of me. ;-)
http://www.embarcadero.com/products/jbuilder
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