Re: [time-nuts] LORAN modulation scheme???? Kind of interesting

[Don Henderickx]

On 3/27/2012 8:42 PM, paul swed wrote:

What I was hearing is just local garbage so nix the modulation

On Tue, Mar 27, 2012 at 5:35 PM, paul swed  wrote:


Hi paul. The signal from the Dana In. site has been on continuously for 
several weeks.
Could this be what you are hearing? I put a scope on it this evening and 
see GRI's so

I assume it is a valid signal. I am located in EN42
Don
wa9ylp


Indeed it is possible, at least the winter. I have received and locked to
the signal from Europe. But its not often. When I was able to lock it was
later at night.
Also not often enough to really matter. :-(
Regards
Paul.


On Tue, Mar 27, 2012 at 5:23 PM, ALAN MELIAwrote:


Hi Paul it may be nothing to do with it but there are several places where
Loran-C is still active. and the Lessay chain is running eLoran although
one slave is down at the moment, he master and other two slaves are I
believe still active. It is some way from you but when it is otherwise
quiet..is it possible? There area number of DSP (sound card) solutions
for identifying stations/chains. Marcus Vester, and Peter Martinez are two
names that come to mind.

Alan

--- On Tue, 27/3/12, paul swed  wrote:


From: paul swed
Subject: [time-nuts] LORAN modulation scheme Kind of interesting
To: "Time-nuts", "paul swed"
Date: Tuesday, 27 March, 2012, 21:23
Perhaps its just noise. But LORAN
went off the air. In the quite I hear
some low level junk.
Only I am beginning to think its not low level junk.

It sounds like a GRI thats been spread and perhaps this is
what a GRI
sounds like when you do lots of phase reversals.
My O my time to fire up the old austron 2000 gate a scope
and see if this
junk is synchronized.
Have to believe I can do the same thing on the SRS FS700.
Regards
Paul
WB8TSL
Boston
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Re: [time-nuts] LORAN C 89700 dropped carriers at 1615 EST after a solid 3 days

[Don Henderickx]

On 3/22/2012 7:41 PM, paul swed wrote:

Thanks John
I'll have to see what I can do on the tracking.
At 0037 EST the stations dropped while I was listening and watching.
100KC is totally quite right now.
Regards
Paul


My 2100r continues to receive in north west Illinois.I assume this is 
the Dana Indiana transmission

3/22/2012 2140 cst
Don
wa9ylp

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Re: [time-nuts] LORAN-C Reception on Cape Cod

[Don Henderickx]

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 Loran-C 
receives.
Have to ponder that action Difficulty is that one receiver has to 
be dedicated to a single GRI.


89700 (microsecond GRI) is till coming in with Dana, IL as master and 
Seneca, NY as the X slave.


Stan, W1LECape Cod



On 3/20/2012 4:09 PM, Bill Riches wrote:

Seems that Cape May NJ is on also - is that part of the chain?

73, Bill WA2DVU





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If I am not mistaken Dana is not in Illinois it is in Indiana.
Still receiving at 2200 hrs local.
Don

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Re: [time-nuts] LORAN-C Reception on Cape Cod

[Don Henderickx]

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 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 may be the better solution but  for a quick check the built in
phase comparator of the FS700 is more than adequate. My comparisons
between  my GPS based GPSDO and the FS700 (using the German Sylt chain)
show frequency differences<10E-12 over observation times of some hours or
so with the built in comparator.

73s and my congrats to LORAN
Ulrich, DF6JB

Am 20.03.2012 um 15:51 schrieb paul swed:


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
wrote:


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
Phase: -17.9 deg

Stations found: (ident: Amp in dB)
M59*   X56

Time since lock:   0:21:40  ( had lock overnight, but with an error so
I
did a new search)
Length last unlock:  0:10:42

Signal status:  a r b n o

I am using the standard SRS active whip antenna about 7' above ground
in
the back yard.
Receiver firmware is 1.19

As time permits I will compare the Loran-C to the T'Bolt GPS/DO, with
the
Tracor 527E.

It is nice to have Loran-C signal to play with.
The Nantucket Loran-C station was a bout 40 miles away. Almost a Cs
reference in my shack.


Stan, W1LE Cape CodFN41sr



XXXx

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Ulrich Bangert
Ortholzer Weg1
27243 Gross Ippener
Deutschland
Tel   +49 (0)4224 95071
Fax  +49 (0)4224 95072
Mob +49 (0)172 8006546
www.ulrich-bangert.de



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[time-nuts] CSD-510

[Don Henderickx]

I wonder if anyone in the group might have any technical info on a 
Leitch CSD-510 clock system driver I believe it was made for the 
broadcast ind. I have tried web searches but only find sellers  of the unit.

Don
wa9ylp

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Re: [time-nuts] Fluke 207 vlf rcvr schematic please

[Don Henderickx]

On 9/24/2011 9:39 AM, paul swed wrote:

Hello to the group I wonder if anyone might have the fluke 207 vlf manual. I
am actually looking for the phase shifter board.
I think it actually uses a regenerative divider from what I can tell and
suspect the issues I see are at that point. Slightly off frequency 100hz.
Which is actually pretty large.
Thanks in advance
Paul
WB8TSL
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Paul
I have a fluke 207 and manual. I will look for it tomorrow. Getting it 
scanned might be a problem?

Will let you know.
Don
wa9ylp

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Re: [time-nuts] pts 160 power problem

[Don Henderickx]

On 3/14/2011 11:00 AM, Dave Mallery wrote:

hi

having finally acquired a stiff supply, i

put in the requested 5.4vdc and the unit draws the specified 1.5a..

still not working, no output signal, so back to the manual.

dave

On Fri, Feb 25, 2011 at 6:59 PM, EB4APL  wrote:


Hi,

Since this thread is about a PTS repair, I think this is not too much OT.
  I need the manual for my PTS 040, I already have one for the 160 from
Didier's site and while both models are similar end employ most the same
modules, I would like to have the specific one for my model.
According to PTS web site this model is still on production, but I think
that asking PTS for one would cost me much more than I paid for the real
thing.

If anybody knows were I can get one I'll appreciate very much.

Regards,
Ignacio, EB4APL



El 26/02/2011 0:27, J. Forster wrote:


That depends on the phase of the moon and your religion.

Sometimes low-ESR aluminum; other times good Tantalums (150D or CS-13s)

No two people agree on this issue.

-John

==


  thanks everyone.

i found a cache of tantalum caps in the output amp module.  also, there
isn't any output any more.
struggling to get all those @#@ screws out so i can get to them.

should i find new tantalum caps, or is there a better substitute?

dave

On Fri, Feb 25, 2011 at 11:29 AM,   wrote:

  In a message dated<25%2F02%2F2011%2017>25/02/2011 17:13:01 GMT

Standard Time,
dave.mall...@gmail.com writes:

i tried  another more robust 5v supply, but that goes to 4.5v and ng
output.

i  removed each of the plug-in decades, one at a time, looking for the
guilty
one.  no joy.  i also removed the left rear module (uses  5v).  the
other
two
modules only use 12v. which is fine.

has  anyone been here before?  could it be a problem in the backplane (a
work
of art, btw)?



---
Hi Dave


I've used quite a few of these and have never yet experienced an  actual
component failure, obviously not saying it can't happen just that  once
sorted
yours should remain pretty reliable.


As John already suggested I'd also look for possible fautly tantalums or
other capacitors across the supply but would also suggest removing all
the
modules from the motherboard at the same time before proceeding any
furter
and checking if the symptoms still persist.
I know what you've done has probably eliminated the modules but it
would
be a shame to tear into the backplane if you just happened to have more
  than
one faulty module.

I did once receive a previously working PTS160 by post that refused to
play
  and eventually located a very small solder blob, presumably  from
inside
the associated module, that had dropped into an edge  connector and
wedged
between a couple of pins, that was fun:-)

If you haven't already found it there's a manual for the PT160 on
Didier's
site.

_http://www.ko4bb.com/cgi-bin/manuals.pl?dir=05%29_GPS_Timing/PTS_
(http://www.ko4bb.com/cgi-bin/manuals.pl?dir=05)_GPS_Timing/PTS)

regards

Nigel
GM8PZR

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--
Dave Mallery, K5EN (ubuntu linux 10.10)
HC31 Box 99E;   Williamsburg,  NM  87942

no gates...
   no windows!
 free at last!
   linux counter #64628 (since 1997)

"People aren't as dumb as Microsoft needs them to be."
--PJ, May 2007
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Hi:
Just a thought. I have not run my pts 160 for some time but I recall 
that it would loose output if run unterminated for any length of time 
mine is a 50 ohm imp output I think there were some  75 ohm also. If 
left off for a short time and then terminated it 's output would return 
and continue.

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Re: [time-nuts] Cheap distribution amplifier

[Don Henderickx]

On 12/1/2010 9:29 PM, Don Henderickx wrote:

On 12/1/2010 6:08 PM, Geraldo Lino de Campos wrote:

Fellow time-nuts:

There are very cheap Efratom distribution amplifiers on e***, for 
instance

290404960494 (no affiliations with the seller). Unfortunately, they have
only 1 pps distribution cards.

However, it is very easy to change the card to distribute 10 MHz, or 
other

frequencies. It takes only a few minutes.

See my page at www.decampos.net/I/EF

Performance may be not stellar, but for the price it is a steal - 
US$40 for

5 cards of 4 ports, plus rack and power supply.
Could you elaborate on changing to 10mhz?. I bought one  of these a 
few years ago,and all I get out of it is ripple.
also can not find any usable tec information. Sure would like to get 
it  working.

Don Henderickx


Sorry I didn't look at your web site.
Don H

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Re: [time-nuts] Cheap distribution amplifier

[Don Henderickx]

On 12/1/2010 6:08 PM, Geraldo Lino de Campos wrote:

Fellow time-nuts:

There are very cheap Efratom distribution amplifiers on e***, for instance
290404960494 (no affiliations with the seller). Unfortunately, they have
only 1 pps distribution cards.

However, it is very easy to change the card to distribute 10 MHz, or other
frequencies. It takes only a few minutes.

See my page at www.decampos.net/I/EF

Performance may be not stellar, but for the price it is a steal - US$40 for
5 cards of 4 ports, plus rack and power supply.
Could you elaborate on changing to 10mhz?. I bought one  of these a few 
years ago,and all I get out of it is ripple.
also can not find any usable tec information. Sure would like to get it  
working.

Don Henderickx

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Re: [time-nuts] SatStat Software Whereabouts

[Don Henderickx]

On 10/24/2010 8:04 PM, J. L. Trantham wrote:

I was looking for the SatStat Software to load onto a laptop but could not
find a link to it.

Does anyone know where it might be?  I probably have a copy stored on my
shop computer but haven't checked that yet.

Thanks in advance.

Joe


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Jo
Try www.realhamradio.com/gps k8cu site. If you have trouble drop the gps.
Don wa9ylp

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[time-nuts] True to there word.

[Don Henderickx]

The lights went out (actually red) on my Austron 2100 r this morning. 
(whats  next WWVB ?)

Don H

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[time-nuts] hp113x

[Don Henderickx]

Hello all:
I wonder if some one could help me find a schematic of a hp113x?
I have a schematic for the 113br however their seems to be quite a bit 
of difference (the 113x has a ac power supply).

Don Henderickx

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