Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

[billriches]

Reminds me of the 1950's living in Wildwood, NJ.  We had a TV antenna on the 
roof to pick up stations from Philadelphia - 80 miles away.  When ever an 
airplane flew over you would see flutter and distorted sound!

73,

Bill, WA2DVU
Cape May

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of David
Sent: Tuesday, May 24, 2016 10:26 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] I thought GPS repeated every 12 hours (-2 minutes)

On Tue, 24 May 2016 16:15:15 -0700, you wrote:

>
>kb...@n1k.org said:
>> The glitches are to narrow (short duration) and far to regular for 
>> the ionosphere to be the issue.
>
>Is multipath from a large airliner in a landing pattern likely to cause 
>that sort of problems?
>
>I'm 20+ miles off the end of SFO, but it's common to see large planes 
>going over and turning to line up for a landing.  On my 
>one-of-these-days list is to grab the airline location data and see if it 
>correlates with GPS glitches.

Back when I did a lot of transmitter hunting, I listened to multipath from 
airliners from 2 meters to 23 centimeters.  The 2 meter directional antenna I 
ultimately designed was good enough to not only track airlines by their 
reflected RF, but it could see reflections and shadows from nearby objects like 
street lights and trees which ultimately limited outside performance testing.

As you can calculate from the geometry, the flutter started out fast and 
decreased in frequency until there was a slow null/peak and then it reversed.  
If the same happened with GPS, then maybe the receiver could briefly lock onto 
the reflection from the plane producing a different solution for a short time.
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Re: [time-nuts] RG6 or LMR400 for GPS Antenna (Symmetricom 58532A and T-bolt)

[billriches]

RG6 for CCTV has copper shield and solid conductor.
RG6 for CATV has aluminum shield and solid conductor.
 73,

Bill, WA2DVU
Cape May 

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Ryan Stasel
Sent: Friday, April 22, 2016 5:09 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] RG6 or LMR400 for GPS Antenna (Symmetricom 58532A and 
T-bolt)

Paul, 

LOL! So, along those lines… one other question, since I can’t find my belden, 
I’ll be buying some coax. Anyone have any opinions about RG6 for CCTV vs CATV? 
My understanding is the CCTV version always has a solid copper center conductor 
(which in my mind would mean less voltage loss for the DC power going to the 
antenna), or I’m still overthinking it and should just go with standard RG6?

Thanks! 

-Ryan Stasel

> On Apr 21, 2016, at 13:04 , paul swed  wrote:
> 
> Ryan a slight heads up.
> Time Nuts is not about time accuracy as many people assume.
> Its actually about the time we all waste looking for what we know we have.
> We just measure that time accurately.
> I do not use anti seize. Nothing against it just one more glob of 
> stuff to deal with.
> If you use the heat shrink and it seals your done for my 2 cents.
> Paul
> WB8TSL
> 
> On Thu, Apr 21, 2016 at 1:07 PM, Ryan Stasel  wrote:
> 
>> All,
>> 
>> Really awesome answers, thanks!
>> 
>> For the sealing question, it was more of a “should I bother with 
>> something like anti-seize” or the like on the actual thread-thread N 
>> interface. The actual connector crimp, was planning on just using a 
>> couple layers of the heat-shrink with adhesive. That is all going to 
>> be internal to the mast anyway, so direct weather contact should be 
>> minimal. It’s also on the side of my chimney, that gets very little 
>> to no direct sun, so UV exposure should be minimal. But good note on that 
>> regard.
>> 
>> Pete, thank you very much for the info wrt the antenna and amp, and 
>> also the fact the Trimble starter kit came with RG6. I’m going to see 
>> what my seller wants for LMR400, but otherwise, I’ll just use RG6. 
>> It’s certainly easier to handle. I did find some datasheets on the 
>> stuff that Home despot (har har) sells (Southwire ( 
>> http://www.southwire.com/ProductCatalog/XTEInterfaceServlet?contentKey=prodcatsheetOEM80)).
>> I swear I have a box of Belden somewhere, but I can’t seem to find it.
>> 
>> Thanks again!
>> 
>> -Ryan Stasel
>> 
>>> On Apr 21, 2016, at 06:02 , paul swed  wrote:
>>> 
>>> With respect to sealing. Everyone has a method.
>>> I use what I learned in the Navy. I could see how well the 
>>> connections
>> held
>>> up in the worst conditions sun cold heat wet humidity...
>>> Layer of rubber tape
>>> scotch kote
>>> Layer of plastic tape
>>> scotch kote
>>> If done well the connector releases just fine even after 5 or more
>> years. I
>>> want to say 10. But then woodpeckers have a way of shortening the 
>>> life of connectors and coax.
>>> The approach is really layers and the top to deteriorate over time...
>>> But as I say everyone has their own approach.
>>> Regards
>>> Paul
>>> WB8TSL
>>> 
>>> On Wed, Apr 20, 2016 at 9:03 PM, Ryan Stasel 
>> wrote:
>>> 
 Bob/Paul,
 
 Thanks. And there's the rub... Who knows what the specs are on "generic"
 RG6 QS. I'll see what my seller wants for their LMR400, but 
 otherwise
>> yeah,
 RG6 is just easier. I have both compression and crimp connectors 
 for it, including some RG6 N-connectors (yeah, they're probably for 
 LMR300, but they work).
 
 Other question: any tips for the exterior N connection? I can 
 "weatherproof" the actual cable-connector crimp, but I'm curious if
>> anyone
 bothers to "lube" the N connector to keep moisture from otherwise
>> seizing
 it up.
 
 Thanks!
 
 Ryan Stasel
 IT Operations Manager, SOJC
 University of Oregon
 
 Sent from my iPhone
 
> On Apr 20, 2016, at 17:00, Bob Camp  wrote:
> 
> Hi
> 
> RG-6 Quad Shield should be fine as long as it’s meeting the 
> published
 specs. The advantage of LRM-400 is that you likely *know* where it 
 came from and what the specs are.
> 
> If you decide to split the antenna between GPSDO’s, a powered 
> splitter
 is a really good idea. Each time you split another 2 ways, you 
 loose 3
>> db.
 Get at least a 4 way splitter ….
> 
> Bob
> 
>> On Apr 20, 2016, at 4:41 PM, Ryan Stasel  wrote:
>> 
>> All,
>> 
>> I’m going to be installing a “permanent” antenna at home, and 
>> will
>> need
 a run of about 100ft to get from my workstation, to the mast I’ll 
 be mounting the antenna on (Symmetricom 58532A). I’ve seen some 
 indication that both the antenna and the Trimble Thunderbolt won’t 

Re: [time-nuts] Replacement Motorola 8 channel Oncores will start shipping in two weeks

[billriches]

Hi Pete,

I would like two of them - non-right angle connectors are fine.  Let me know 
off list how to pay.  Thanks for doing this for us.

73,

Bill, WA2DVU
Cape May, NJ
bill.ric...@verizon.net

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Pete Lancashire
Sent: Saturday, April 02, 2016 9:04 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Replacement Motorola 8 channel Oncores will start shipping 
in two weeks

Sorry for all the delays, have a lot of things going on

I'f you have already notified me make sure I have an address the USPS will send 
a box to.

If someone still want one, I will need to know by Wednesday the 6th.

If you can take modules that do not have the right angle antenna connector 
please let me know. This will ensure there are enough for those that do. So far 
right angle versions are running around 1/3 of what I've pulled.

Price will be $5 each to members of this list, with a limit of two per person 
at that price. Shipping to an address in the US will be in a USPS Small Flat 
Rate box, which currently is $6.80. The box will hold two without any issues.

If outside the US the cost will have to be figured out.

Regards

-pete
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Re: [time-nuts] Lucent PPS

[billriches]

I think the PPS output on the Lucent beats to a different drummer. Tried to get 
it to sync PC sound board for SL.  Pulse too short.  Used a pulse stretcher and 
that did not help.  Other members of our list said they had problems with it 
also.  Using a Jackson's 1 PPS output and it works fine.

73,

Bill, WA2DVU
Cape May

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Joseph Gray
Sent: Tuesday, March 15, 2016 11:31 PM
To: Discussion of precise time and frequency measurement
Subject: [time-nuts] Lucent PPS

Although I have had this GPSDO operating continuously for several months, this 
is the first time I have looked at the serial output. The Status information 
looks OK to me, but should the PPS be jumping around this much? I can't compare 
it to my Z3801A as I haven't gotten around to fixing it yet (still in holdover).

https://dl.dropboxusercontent.com/u/19599147/Lucent%20GPSDO.png

Joe Gray
W5JG
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Re: [time-nuts] Downsizing - Which GPSDO To Keep?

[billriches]

In the past I used Thunderbolt with Lady Heather.  Great combination.  Now 
using 2 Lucent's that were the flavor of the month a short while ago.  Lucents 
would be number if LH would work with them.

73,

Bill, WA2DVU.

here.


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Re: [time-nuts] eLORAN on the air starting 8 Dec

[billriches]

Hi Paul,

Not on until next week.

Bill

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed
Sent: Thursday, December 03, 2015 1:55 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] eLORAN on the air starting 8 Dec

Bill,
I don't hear anything up here.
But I do have some interference every 7.5 KHz.
Was just shutting things off around the house no luck.
Frankly it actually sounds far away anyhow. But figured I would check.
I speak with Steve and Andre and have had some good conversations on vlf.
Few folks know or care about it today.
Regards
Paul
WB8TSL

On Thu, Dec 3, 2015 at 12:06 PM, billriches <bill.ric...@verizon.net> wrote:

> Hi Paul
>
> I am in contact with John, the tech at Wildwood and he gives me a 
> heads up and I also get word from Steve at UrsaNav.  I have a rx tuned 
> to 100 khz with squelch and send him pics from our SA at times. Any 
> ideas on what might be on 122.3 khz and 122.9 khz.
>
> 73,
>
> Bill, WA2DVU
> Cape May
>
> -Original Message-
> From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of paul 
> swed
> Sent: Thursday, December 03, 2015 9:44 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] eLORAN on the air starting 8 Dec
>
> Bill not so sure about that. I agree they do pop up sort of randomly.
> The note I get is for the longer tests.
> Curious how are you monitoring?? I can see some magical 100 KHz rcvr 
> with alarm/squelch seems to be handy. Not that they exist.
> I will guess the SRs700 would relock also but I don't leave that on 24X7.
> Regards
> Paul
> WB8TSL
>
> On Wed, Dec 2, 2015 at 9:26 PM, billriches <bill.ric...@verizon.net>
> wrote:
>
> > Wildwood has been on yesterday and today (Wed).  Will probably be on 
> > tomorrow also.
> >
> > 73k
> >
> > Bill, WA2DVU
> > Cape May
> >
> >
> > Here is an on-air notice.
> >
> > The Wildwood eLoran transmitter will be continuously broadcasting 
> > from
> > 0900
> > (EST) on 08 December 2015 through 1200 (EST) on 18 December 2015.
> > Wildwood will be broadcasting as 8970 Master and Secondary most of 
> > the time but occasionally may operate at other rates.
> >
> > I can say my LORAN C equipment's been working great. Its also 
> > allowed me to use the gear to confirm the various references that I
have.
> > Great to see LORAN again.
> >
> > Hopefully this can become the back up PNT needed for GPS.
> > Regards
> > Paul
> > WB8TSL
> > ___
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> >
> >
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Re: [time-nuts] RG 6 U couplings

[billriches]

We do splices all the time with RG11 and RG6 using F type connectors and a
barrel connector to join the two.  This is for cable tv systems.  Connectors
are cheap - if you don't have any flag down your friendly fios or comcast
truck and he will surely part with a few.  The problem is you need the
correct crimp tool if they are snap and seal or a variant.  The cable guy
may be able to lend you a tool.

73,

Bill, WA2DVU
Cape May

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed
Sent: Saturday, December 05, 2015 5:06 PM
To: ewkehren; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] RG 6 U couplings

Bert did not find much that I would trust. But  the FM-FM should be about
3/4db from the various posts I have seen.
Regards
Paul
WB8TSL

On Sat, Dec 5, 2015 at 3:28 PM, Bert Kehren via time-nuts <
time-nuts@febo.com> wrote:

> At my new home the GPS antenna location has turned in to a  challenge.  
> May have to splice RG 6U. Has any one done measurements on  couplings 
> and the loss associated with them. Right now I am considering a  
> female, female coupling. Is there a better alternative?
> Thanks   Bert Kehren Palm City  Fl.
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Re: [time-nuts] eLORAN on the air starting 8 Dec

[billriches]

Hi Paul

I am in contact with John, the tech at Wildwood and he gives me a heads up
and I also get word from Steve at UrsaNav.  I have a rx tuned to 100 khz
with squelch and send him pics from our SA at times. Any ideas on what might
be on 122.3 khz and 122.9 khz.  

73,

Bill, WA2DVU
Cape May

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed
Sent: Thursday, December 03, 2015 9:44 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] eLORAN on the air starting 8 Dec

Bill not so sure about that. I agree they do pop up sort of randomly.
The note I get is for the longer tests.
Curious how are you monitoring?? I can see some magical 100 KHz rcvr with
alarm/squelch seems to be handy. Not that they exist.
I will guess the SRs700 would relock also but I don't leave that on 24X7.
Regards
Paul
WB8TSL

On Wed, Dec 2, 2015 at 9:26 PM, billriches <bill.ric...@verizon.net> wrote:

> Wildwood has been on yesterday and today (Wed).  Will probably be on 
> tomorrow also.
>
> 73k
>
> Bill, WA2DVU
> Cape May
>
>
> Here is an on-air notice.
>
> The Wildwood eLoran transmitter will be continuously broadcasting from 
> 0900
> (EST) on 08 December 2015 through 1200 (EST) on 18 December 2015. 
> Wildwood will be broadcasting as 8970 Master and Secondary most of the 
> time but occasionally may operate at other rates.
>
> I can say my LORAN C equipment's been working great. Its also allowed 
> me to use the gear to confirm the various references that I have. 
> Great to see LORAN again.
>
> Hopefully this can become the back up PNT needed for GPS.
> Regards
> Paul
> WB8TSL
> ___
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>
>
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Re: [time-nuts] eLORAN on the air starting 8 Dec

[billriches]

Wildwood has been on yesterday and today (Wed).  Will probably be on
tomorrow also.

73k

Bill, WA2DVU
Cape May


Here is an on-air notice.

The Wildwood eLoran transmitter will be continuously broadcasting from 0900
(EST) on 08 December 2015 through 1200 (EST) on 18 December 2015. Wildwood
will be broadcasting as 8970 Master and Secondary most of the time but
occasionally may operate at other rates.

I can say my LORAN C equipment's been working great. Its also allowed me to
use the gear to confirm the various references that I have. Great to see
LORAN again.

Hopefully this can become the back up PNT needed for GPS.
Regards
Paul
WB8TSL
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Re: [time-nuts] How did they distribute time in the old days?

[billriches]

Not milisecond time distribution but time related!

In the early half of the 1900s Western Union was in the time business.  They
would rent businesses such as banks, office buildings, etc  clocks for a few
dollars a month.  These were pendulum wall clocks that had 2 #6 dry cell
batteries inside that would wind them every hour or so. The clocks were
connected to the WU telegraph line and for a minute before and after  the
top of the hour all traffic on the circuit would stop.  Exactly at the top
of the hour they would push a pulse of 50 ? volts or so over the line and it
would reset the clock to the top of the hour.

Eventually WU decided to get out of the time business and stopped the
service and they said all the customers could keep their clocks.  It was
said that at the end of that day many clocks were seen going home with some
of the workers!

I purchased one of these clocks about 15 years ago from a North New Jersey
junk dealer who had obtained several hundred of them.  My clock has a 1929
scratch mark inside and
is still ticking away. These clocks were made by the Self Winding Clock
Company and more information can be seen in the book "American Clocks Volume
2 " by Tran Duy Ly (page 177).  It loses or gains about a minute a month
depending on the moon phase or sunspots.  You can see a pic of the clock on
qrz.com under my call sign.

73,

Bill, WA2DVU
Cape May



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Re: [time-nuts] How did they distribute time in the old days?

[billriches]

I have been using 2 D cells in series to wind my clock - Every Labor Day I 
change the batteries!  Has anyone used Ken's for a rebuild.  Mine is still 
chugging along - amazing as some of the bushings are ovals and the gears can 
really move around in them!!

73,

Bill

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Brooke Clarke
Sent: Wednesday, October 14, 2015 2:02 PM
To: Nick Sayer; Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] How did they distribute time in the old days?

Hi Nick:

One of my Self Winding Clock Co. (WU) clocks was taken down yesterday for 
painting.
When put up one of the Ken's Clock Synchronizers was installed and the hands 
moved to align with the heart shaped cam it uses, but it never worked.
The problem was it used a 4.5 Volt signal which can develop the current needed 
to pull the sync electromagnet the time constant is far too slow.
I'm going to add a high voltage circuit with series resistor to get the time 
constant down one or two orders of magnitude.  The key to this is a PCB I make 
that holds 5 each 9V batteries connected in series, so I'll use one, two or 
more of them to get the time constant down.
http://www.prc68.com/P/45VS.html

Before I had the 45 Volt Stick I was considering getting the needed high 
voltage by charging a cap a minute or two before the top of the hour and 
discharging it through a resistor.  Here's a video showing that would work.
http://www.prc68.com/I/SWCC.shtml#Experiments_Feb_2014_

Mail_Attachment --
Have Fun,

Brooke Clarke
http://www.PRC68.com
http://www.end2partygovernment.com/2012Issues.html
http://www.prc68.com/I/DietNutrition.html
Nick Sayer via time-nuts wrote:
>> On Oct 14, 2015, at 4:42 AM, billriches <bill.ric...@verizon.net> wrote:
>>
>> Not milisecond time distribution but time related!
>>
>> In the early half of the 1900s Western Union was in the time 
>> business.  They would rent businesses such as banks, office 
>> buildings, etc  clocks for a few dollars a month.  These were 
>> pendulum wall clocks that had 2 #6 dry cell batteries inside that 
>> would wind them every hour or so. The clocks were connected to the WU 
>> telegraph line and for a minute before and after  the top of the hour 
>> all traffic on the circuit would stop.  Exactly at the top of the 
>> hour they would push a pulse of 50 ? volts or so over the line and it would 
>> reset the clock to the top of the hour.
> The WU standard time service goes back further than the turn of the 20th 
> century. It started in 1870.
>
> I’ve always wanted to get my hands on one of those clocks and come up with a 
> circuit to recreate the synchronization signal for it, probably with a 
> Raspberry Pi running ntpd and a big ol’ MOSFET. The problem is that at this 
> point, those clocks are quite expensive once they’re reconditioned.
>
> My understanding (perhaps incorrect) was that the sync pulse was once daily 
> and, as you said, would cause the hands to “snap” to 12. The trailing edge of 
> the pulse was synchronized and would release the clock to operate normally.
>
> That they had something as accurate and widespread as it was so early is 
> astonishing.
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Re: [time-nuts] Why sunspots affect a pendulum?

[billriches]

Antonio - that sunspot comment was made as a joke!

73,

Bill

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of iovane---
via time-nuts
Sent: Wednesday, October 14, 2015 12:31 PM
To: time-nuts@febo.com
Subject: [time-nuts] Why sunspots affect a pendulum?

In the other thread "How did they distribute time in the old days?" Bill
wrote:
> It loses or gains about a minute a month depending on the moon phase 
>or sunspots.

Why should sunspots affect the rate of a pendulum clock? Sunspots are not
related to gravity. What about?  Any other kind of clocks is affected by
sunspots? Who knows? Is what Bill stated reliable? Any paper or website
about?I would be interested in recorded pendulum clock drift data.
Antonio I8IOV
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Re: [time-nuts] HP10811 dual oven

[billriches]

Hi Dan,  

I would appreciate it also. Thank you.

73, 

Bill, WA2DVU
Cape May

-Original Message-
From: time-nuts [mailto:time-nuts-bounces+bill.riches=verizon@febo.com] On 
Behalf Of Alexander Pummer
Sent: Monday, August 03, 2015 8:14 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] HP10811 dual oven



Hi Dan,
I would be interested on that document too Thank you in advance
73
KJ6UHN
Alex

On 8/3/2015 12:40 PM, Dan Kemppainen wrote:
 Hi,

 If you search the internet, you should come across a design by Warren 
 S. It's basically the same type of oven controller that is used in the 
 internal oven for that oscillator.

 I did a surface mount version of his design a while back. I've been 
 running it for quite a while now. IMO it is helping to reduce the 
 thermal drift of the oscillator.

 Bob has pointed out in the past that the outer oven was not intended 
 to be active all of the time. This is probably true. That said it 
 seems to help in my setup.

 If you are unable to find the documentation, please let me know. I can 
 try to dig it up when I get home.

 Dan




 On 8/3/2015 12:00 PM, time-nuts-requ...@febo.com wrote:

 Hi

 The “external” heater on the Z3801 OCXO is only needed if you are 
 regularly running below -20C in your environment. Other than the 
 alarm signal, there is no harm in letting it simply shut off forever.

 Bob

 On Aug 2, 2015, at 8:56 AM,tim...@timeok.it  wrote:
 
 
 Hi,
 I have seen, but I do not remember where, someone have rebuilt the
 external oven controller to complete a stand alone OCXO removed from 
 an HPZ3801A.
 Can you hep me to find the document?
 
 Luciano
 timeok
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Re: [time-nuts] LORAN on the air 89700 been a good day so far

[billriches]

Alex - are you referring to the test of eloran in progress from Wildwood NJ?
That of course is on 100 Khz.  There is no Loran in California at this time.

73,

Bill, WA2DVU
Cape May

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Alex Pummer
Sent: Monday, July 20, 2015 9:03 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] LORAN on the air 89700 been a good day so far

Hi Paul
where could I find the frequency of our Loran [the Californian Loran ] I
have an old HP3586 radio receiver
73
Alex

llow the instructions there.


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Re: [time-nuts] LORAN on the air 89700 been a good day so far

[billriches]

Hi Alex,

100 Khz is not protected however the interference from SMPS is annoying but
will not bother loran transmissions as it is much stronger than that
interference.

73,

Bill, WA2DVU

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Alex Pummer
Sent: Tuesday, July 21, 2015 11:58 AM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] LORAN on the air 89700 been a good day so far



Hi Bill ,
is the Loran frequency 100kHz protected? because there are may switching
mode power supplies which generate lots of Loran replacementsthe same is
with wwvb 's 60kHz
73
Alex KJ6UHN

On 7/21/2015 4:26 AM, billriches wrote:
 Alex - are you referring to the test of eloran in progress from Wildwood
NJ?
 That of course is on 100 Khz.  There is no Loran in California at this
time.

 73,

 Bill, WA2DVU
 Cape May

 -Original Message-
 From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Alex 
 Pummer
 Sent: Monday, July 20, 2015 9:03 PM
 To: Discussion of precise time and frequency measurement
 Subject: Re: [time-nuts] LORAN on the air 89700 been a good day so far

 Hi Paul
 where could I find the frequency of our Loran [the Californian Loran 
 ] I have an old HP3586 radio receiver
 73
 Alex

 llow the instructions there.


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Re: [time-nuts] LORAN on the air 89700 been a good day so far

[billriches]

Thanks for your report Paul,  What is your QTH?

73,

Bill

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed
Sent: Monday, July 20, 2015 4:50 PM
To: Time-nuts
Subject: [time-nuts] LORAN on the air 89700 been a good day so far

The system came up at 9 am and has been working well the austrons and SRS fs
700 are doing very well. Some static crashes and such.

This test has however revealed something I did not want to know. The HP
z3801 seems to have a problem of jumping phase. So the trusty box is finally
showing its age. It will be quite a job to dig into.
Regards
Paul.
WB8TSL
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Re: [time-nuts] Loran C returning to a station near you...

[billriches]

FYI Wildwood eLoran will be fired up 1300Z Saturday (today) and 1900Z Monday
thru Thursday.  Happy listening.  Any reports would be appreciated and I
will pass them along to the engineer that is driving the train.

73,

Bill, WA2DVU
Cape Mahy

-Original Message-
From: billriches [mailto:bill.ric...@verizon.net] 
Sent: Thursday, July 16, 2015 10:04 PM
To: 'billriches'; 'Discussion of precise time and frequency measurement'
Subject: RE: [time-nuts] Loran C returning to a station near you...


FYI GRI for Wildwood is 8970.

Bill, WA2DVU
Cape May


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Re: [time-nuts] Loran C returning to a station near you...

[billriches]

Correction on times for Mon - thurs - start 900 edst - 1300Z


-Original Message-
From: billriches [mailto:bill.ric...@verizon.net] 
Sent: Saturday, July 18, 2015 7:05 AM
To: 'billriches'; 'Discussion of precise time and frequency measurement'
Subject: RE: [time-nuts] Loran C returning to a station near you...

FYI Wildwood eLoran will be fired up 1300Z Saturday (today) and 1300Z Monday
thru Thursday.  Happy listening.  Any reports would be appreciated and I
will pass them along to the engineer that is driving the train.

73,

Bill, WA2DVU
Cape Mahy

-Original Message-
From: billriches [mailto:bill.ric...@verizon.net]
Sent: Thursday, July 16, 2015 10:04 PM
To: 'billriches'; 'Discussion of precise time and frequency measurement'
Subject: RE: [time-nuts] Loran C returning to a station near you...


FYI GRI for Wildwood is 8970.

Bill, WA2DVU
Cape May


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Re: [time-nuts] Loran C returning to a station near you...

[billriches]

Hi Paul - how do you figure boston?  The only station up is Wildwood, NJ

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of paul swed
Sent: Saturday, July 18, 2015 1:15 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Loran C returning to a station near you...

OK LORAN is on the air up in Boston.
I had just turned off various equipment this morning.
So starting it back up after testing it yesterday.
Lots of large static crashes.
Regards
Paul
WB8TSL

On Sat, Jul 18, 2015 at 7:04 AM, billriches bill.ric...@verizon.net wrote:

 FYI Wildwood eLoran will be fired up 1300Z Saturday (today) and 1900Z 
 Monday thru Thursday.  Happy listening.  Any reports would be 
 appreciated and I will pass them along to the engineer that is driving 
 the train.

 73,

 Bill, WA2DVU
 Cape Mahy

 -Original Message-
 From: billriches [mailto:bill.ric...@verizon.net]
 Sent: Thursday, July 16, 2015 10:04 PM
 To: 'billriches'; 'Discussion of precise time and frequency measurement'
 Subject: RE: [time-nuts] Loran C returning to a station near you...


 FYI GRI for Wildwood is 8970.

 Bill, WA2DVU
 Cape May


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Re: [time-nuts] Loran C returning to a station near you...

[billriches]

No sigs yet - I am friends with the tech at Wildwood and also have a monitor 
(with squelch) on the fx.  Will advise list when they fire up.

73,

Bill, WA2DVU
Cape May, NJ - Just a few miles away from Wildwood.

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of David McGaw
Sent: Tuesday, July 14, 2015 11:32 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] Loran C returning to a station near you...

The word is that eLoran IS on in the US from Wildwood as of June 19.  
Has anyone noticed the signal?

http://www.pressofatlanticcity.com/news/loran-navigation-signal-back-on-and-better-than-before/article_21d19298-16d0-11e5-9a69-1343edc2e90b.html

There is also a bill in the US House to reinstate Loran-C as eLoran.

David N1HAC


On 7/14/15 6:49 PM, Bob Camp wrote:
 Hi

 Not to be to much of a downer here but …..

 Loran for timing and an “Eastern WWVB” are two projects that seem to 
 each have a life of their own. They seem to come up on some sort of cycle 
 related to sun spots.
 Both have zero (or possibly less than that) percent mind share among 
 those who would need to implement them into systems. Since there is 
 major cost on the systems end, it would take “mandatory use” 
 legislation to get them designed in. Without those design in’s, 
 *having* a backup system is pretty useless. You are talking about billions of 
 dollars and years of effort to hook them up ….

 If you are talking about “infinite budget” military systems, some of 
 that may happen. I notice in the papers that “infinite budget” does 
 not seem to apply to the US DOD these days. For commercial systems, nobody 
 will significantly cut into profits to do something like this.

 Should they do this - sure. Will they do it - nope.

 Bob

 On Jul 14, 2015, at 4:49 PM, paul swed paulsw...@gmail.com wrote:

 Poul-Henning,
 The reason to stay with the LORAN C style pulses is very very simple. 
 It allows our time-nuts Austrons and SRS to work. Its the only way I 
 get any of my tax dollars back. :-) The good news is no official 
 government person reads time-nuts.
 Regards
 Paul


 On Tue, Jul 14, 2015 at 12:16 PM, Poul-Henning Kamp 
 p...@phk.freebsd.dk
 wrote:

 
 In message 55a4ac81.1030...@rubidium.dyndns.org, Magnus Danielson
 writes:

 The safety is
 relative, in that it takes quite a bit of more infrastructure 
 compared to the jamming of GPS, and that lies in the wavelength of 
 the signal than anything else.
 If the goal is a reliable backup for GPS, there are smarter ways to 
 use the 100kHz band than Loran-C pulses, and there really isn't much 
 reason to stay compatible with Loran-C receivers.

 --
 Poul-Henning Kamp   | UNIX since Zilog Zeus 3.20
 p...@freebsd.org | TCP/IP since RFC 956
 FreeBSD committer   | BSD since 4.3-tahoe
 Never attribute to malice what can adequately be explained by incompetence.
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Re: [time-nuts] Loran C returning to a station near you...

[billriches]

Station in Wildwood, California, and mid west are sort of intact.

Bill, WA2DVU

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Dale Cannon
Sent: Wednesday, July 15, 2015 1:18 AM
To: time-nuts@febo.com
Subject: [time-nuts] Loran C returning to a station near you...

Folks,

 

I know that there is a longing for LORAN-C to return, but this weekend, I
did a Google Maps flyover of each of the US LORAN-C stations (takes less
than an hour). Almost all of the antennas are gone and there are no cars in
the parking lots (except at Seneca which became an Army depot). This means
that the equipment is probably gone, too. Or maybe this stuff will show up
at auction or on E-Bay and that would solve the Austron receiver problem..

 

Dale Cannon, KS4FA

 

 

 

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Re: [time-nuts] Thunderbolt Power Supply Suggestions

[billriches]

Meanwell is good - have used several and have had no problems with them.

73,

Bill, WA2DVU
Cape May

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of skipp
Isaham via time-nuts
Sent: Monday, June 08, 2015 6:30 PM
To: time-nuts@febo.com
Subject: [time-nuts] Thunderbolt Power Supply Suggestions

Hello fellow Time Nuts... 

I've obtained a Trimble Thunderbolt (from Ebay) and I'm in the process of
searching out a practical power supply option. I've got the proper plug and
pins already on order from Mouser. 

I've identified the Meanwell T-30B as a decent power supply. I like Meanwell
power supply products quite a bit. 

Anyone have pro or con comments or alternative supply suggestions, else I go
with the t-30b unless something else crosses my radar screen. 

Thank you in advance for your replies 

regards, 

skipp 

skipp025 at ya who period com
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Re: [time-nuts] KS-24361 NO GPS - again

[billriches]

Hi Ulli,

I heard some comments that the short jumper cable between the two units
would make an intermittent connection.  You will notice that some of the
pins in the connector are shorter than the others and hopefully that is the
problem.  I don't know if the plugs are wired 1 to 1, 2 to 2 and so forth
but you could figure that out and make up another cable and try it.
Hopefully your problem will be as simple as a bad cable.  I have had two of
those systems running 24/7 for almost a year and have had no problems.  

73,

Bill, WA2DVU
Cape May


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Re: [time-nuts] eLoran Testing in the US

[billriches]

Here is some info

http://gpsworld.com/exelis-ursanav-to-demo-eloran-with-homeland-security-coa
st-guard/

During the winter they were xmitting from Wildwood (10 miles from me)  Hope
they continue to work on this - if GPS blows up we are in real trouble.

73,

Bill, WA2DVU
Cape May



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Re: [time-nuts] Any reason not to use one power amplifier and splitter for distribution amplifier?

[billriches]

A cheap and dirty equivalent of a pass thru terminator that I use is a BNC t
connector with a 52 ohm bnc terminator.  I guess you could use a CATV 75 ohm
F type with an adapter. Maybe that combination would produce too much
garbage.

73,

Bill, WA2DVU
Cape May



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Re: [time-nuts] Frequency doubler 5/10 and distribution amplifier for Lucent KS-24361

[billriches]

Hi Gerhard,

Wow - what a nice piece of work.  If you or anyone in our group is going to 
make boards or completed units I would be interested in two of them.  I do not 
have the expertise to build them.

73,

Bill, WA2DVU
Cape May, NJ 

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp
Sent: Saturday, January 03, 2015 8:48 AM
To: g...@hoffmann-hochfrequenz.de; Discussion of precise time and frequency 
measurement
Subject: Re: [time-nuts] Frequency doubler 5/10 and distribution amplifier for 
Lucent KS-24361

Hi

So is any of the rest of the family still speaking to you? :) That’s a lot of 
work. Very nicely done and documented !!



Phase noise or ADEV would be well worth checking out. I see no reason why they 
would be a problem, but one never knows until the test is run. 

—

I would suggest *some* resistance to ground on the outputs of the distribution 
amp. Without any R, you can get into ESD issues when you connect a cable. Is it 
a big deal - not really. 

Bob



 On Jan 2, 2015, at 8:43 PM, Gerhard Hoffmann dk...@arcor.de wrote:
 
 Hi, all,
 
 over the Christmas season, I have designed and built a frequency 
 doubler from 5 to 10 MHz and a distribution amplifier for the Lucent 
 KS-24361. A preliminary writeup is under
 
  http://www.hoffmann-hochfrequenz.de/downloads/DoubDist.pdf 
 
 It features  4 or 5   10 MHz 10 dBm outputs and an optional 1PPS on SMA with 
 CMOS levels into 50 Ohm.
 It is a small board to be mounted inside the KS-24361.
 
 Comments invited.
 
 regards,
 
 Gerhard
 
 
 
 
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Re: [time-nuts] New GPSDO on EBAY From China

[billriches]

Hi Dave,

Bite the bullet and spring for the Lucent pair on Ebay - $150 , new, and the
pair work fine.  Lots of info on the list about them.  

73,

Bill, WA2DVU
Cape May

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of David Smith
Sent: Sunday, December 28, 2014 10:25 AM
To: time-nuts@febo.com
Subject: [time-nuts] New GPSDO on EBAY From China

Hello Friends,
I found this new inexpensive GPSDO on ebay listed from a seller from China:
http://www.ebay.com/itm/GPS-DISCPLINED-CLOCK-GPSDO-10M-OUTPUT-SQUARE-WAVE-/1
11514491254?pt=LH_DefaultDomain_0hash=item19f6c81976

Dave - W6TE   
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Re: [time-nuts] Connections for FE-5680A rubidium sources

[billriches]

Hi Dave,

The ones I have use the following pin out   

1 - 15 v
2 - ground
4 - 5 v
5 - ground
7 - 10 mhz

The pot on the side does nothing.

Look in the archives for my and other folks addition of an adjustment pot.
You can also adjust fx via software.  Pot is easier.

73,

Bill

I have a couple of Rb sources bought from China or Hong Kong a year or two
ago. I'd like to fix these up. Initially in a box where I can adjust them to
frequency manually, but perhaps later lock them to GPS.
Looking around the web, there are countless options on these things, and
different connection diagrams. Can anyone tell me what these are.
I have attached a picture of one. I have doctored the picture ab bit so
there are large arears of one shade, so the images compress quite a bit.
Essentially they are rather dirty looking metal boxes with rather dirty
white labels on, but such detail is not needed.

The big label says:

FE-5680A
FEI P/N 217400-303520-1

The smaller label with the barcode differs a bit between the two units.

1)  FE-5680A UN 61391 S/N 02444-57246 (on the one I photographed)
2)  FE-??80A UN 66794 S/N 0340-66253 (can't quite read all of it, but I
assume the missing characters are 56.

There is a small adjustment screw on the right, and a 9-pin D-connector,
with the lead cut at about 40 mm from the connector.

I can open one up and take a picture internally if need be.

Dave


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[time-nuts] FW: Z3810 Correction

[billriches]

Correction of post sent about 5 min ago.

 

I had TX- going to pin 7. It should go to Pin 8 of Z3810.

 

Bill Riches

 

 

I finally got my 3810 talking with my windows 7 64 bit pc.

 

1. Ordered a Gearmo GM-485422 USB to RS-485-422 interface converter from
Amazon - 39.95.

 

 
http://www.amazon.com/GearMo%C2%AE-5ft-RS485-RS422-FTDI/dp/B005CPLOVW/ref=sr
_1_8?ie=UTF8
http://www.amazon.com/GearMo%C2%AE-5ft-RS485-RS422-FTDI/dp/B005CPLOVW/ref=s
r_1_8?ie=UTF8qid=1417918933sr=8-8keywords=gearmo+usb+rs-232+serial+adapte
r qid=1417918933sr=8-8keywords=gearmo+usb+rs-232+serial+adapter

 

The driver disk that came with this unit does not have 422 drivers on it
-only rs-232 drivers.  I went to gearmo.com and downloaded the correct
drivers and a correct manual.  Installed drivers and it works fine.

 

2. Downloaded and installed Z3811.exe. Opened program and I am getting more
info from the boxes than I will ever need.

 

3. Pin out that worked for me:

 

CONVERTER Z3810

 

TX +4

TX- 8

RX+5

RX- 9

GND   7

 

73,

 

Bill, WA2DVU

Cape May, NJ

 

  _  


 http://www.avast.com/ 

This email has been checked for viruses by Avast antivirus software. 
www.avast.com http://www.avast.com/  

 



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[time-nuts] LTE-Lite

[billriches]

I have for sale a 2 week old 10 Mhz LTE-Lite with power supply, right angle
jumpers, and antenna as shipped from Said. An excellent unit - in about 15
minutes it will be within a few parts of 10e10.  I am selling it as it would
not work out for a project I was working on.  $ 175.00 including shipping to
lower 48.

73,

Bill, WA2DVU
Cape May, NJ


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[time-nuts] Distribution Amp

[billriches]

Any of the group using the TADD-1 from TAPR.  Perhaps that unit along with
double shielded cables would work for most folks.  Looking at the past
threads are we trying to reinvent the wheel for a distribution solution?

 

73,

 

Bill, WA2DVU

Cape May



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[time-nuts] 10811

[billriches]

Said,

Patiently waiting for my 10 mhz unit.  What are your ideas on using it to
control a 10811 instead of the built in 10 mhz osc?  Will there be enough
control voltage for the 10811?

Regards,

Bill Riches
Cape May, NJ

-Original Message-
From: time-nuts [mailto:time-nuts-boun...@febo.com] On Behalf Of S. Jackson
via time-nuts
Sent: Monday, November 17, 2014 6:40 PM
To: j...@jtmiller.com; time-nuts@febo.com
Subject: Re: [time-nuts] LTE Lite Came!!

Hi Jim,
 
thanks for your question. The reason we put that note in there is  two-fold:
 
1) On these 20MHz units the TCXO output in fact can drive 50 Ohms inputs as
we put a strong buffer on the board, but the synthesized RF output and the
1PPS output cannot drive 50 Ohms. Those two are CMOS 1M Ohms input  only.
 
Using 50 Ohms impedance on the TCXO output will however heavily tax  the
internal power supply and CMOS buffer, and create heating on the board
right next to the TCXO which will affect stability somewhat. So can it be
done? 
Yes. Should it be done? That's up to the user to decide.
 
2) On the next batch of 10MHz DIP-14 TCXO units the external TCXO itself
drives the output directly without a buffer. That TCXO is not capable of
driving  50 Ohms inputs, only CMOS 1M Ohms inputs. So a buffer is required
on these  10MHz units if 50 Ohms test equipment is to be used.
 
Hope that explains it,
bye,
Said
 
 
In a message dated 11/17/2014 15:27:21 Pacific Standard Time,
j...@jtmiller.com writes:

 
Hello Said


I got a nice surprise in my mail today: LTE-Lite!


There was a note with it that said (in effect) none of the outputs are  
50ohm capable. So it looks like I should build up a little board with the  
divide by two and incorporate on that a 50ohm capable buffer for clock  
transmission to the rest of my system?


BTW, you're welcome to answer via Timenuts as I'm sure others will have  
the same question.


Thanks!


Jim AB3CV


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Re: [time-nuts] 10811's

[billriches]

Does anyone have a working oven controller board for a 10811 that they would
wish to sell?  I have a good osc but the oven board is bad.  

73,

Bill, WA2DVU
Cape May



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Re: [time-nuts] FS700 Loran-C Frequency Standard Schematics

[billriches]

For large copies I have taken them to the county clerk's office or a
surveyor's office.  They can make a copy for you at a reasonable price or
free most of the time.  Take them donuts!73,

Bill, WA2DVU
Cape May

-Original Message-
From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On
Behalf Of Magnus Danielson
Sent: Sunday, April 20, 2014 2:29 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] FS700 Loran-C Frequency Standard Schematics

Nigel,

On 04/20/2014 03:43 PM, gandal...@aol.com wrote:
 Hi Magnus

 Thanks for the reply.

 I was aware of that, and the $35 previously mentioned in the time-nuts
 archives for an original manual from SRS doesn't sound too bad, but  they
don't
 seem to list the FS700 these days and for some other  kit they now have
the
 manuals priced at $100 each.

 I was hoping to find a less expensive option:-)

Let's see if there is a scanner available to handle the fold-outs.

My HP5370C scanner (read that number once more!) doesn't do that size 
and I have not figured out a good way to have schematics partially 
scanned and joined together. The one program, hugin, that seems to join 
photos doesn't work with scanned schematics.

Cheers,
Magnus
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