[time-nuts] Loran

Bob Camp lists at rtty.us
Fri Nov 15 18:05:09 EST 2013 

Hi

I would think the old site on the Indiana / Illinois boarder would be a pretty good pick for a single transmitter location. 

Bob

On Nov 15, 2013, at 5:49 PM, paul swed <paulswedb at gmail.com> wrote:

> Gerald
> The new roll of the thing called LORAN has nothing to do with location any
> longer. But we all still call it LORAN. Old habit. Its new purpose if the
> government funds it is PNT dissemination along with some ability to send
> messages. In theory to backup GPS for timing.
> UrsaNAV did pick up at least 1 facility in NJ and they might have purchased
> another 1 or 2 but have no need to purchase all of the old sites.
> They produced a ppt that showed as little as 1 site would cover the US and
> two really would fill in the blanks. some place semi-central.
> 
> For us time nuts even the single central site would be useful as long as
> they stick to the current transmission format. Internationally they might
> have to stick to this modulation method since Europe uses the frequency for
> true eLORAN. I don't really know. But I am not complaining as the old
> receivers have all of there green lock lights on at 1745. Guess no one went
> for beer. Though they might shut down at 0000 utc I have seen them do that.
> 
> The benefit of all of this is as an alternate frequency source that in
> Boston has always been far superior to the 60 Khz WWVB transmission. In
> fairness to WWVB if I had a magical processor as good as the LORAN
> receivers/processors, maybe it would do far better then what I see on the
> wwvb receivers I have. I just do not believe it would equal the LORAN
> quality.
> 
> Currently all of the receivers are saying the signal strength is the same
> as last night. Though in actually listening to the signal I have a healthy
> dose of man made noise today.
> Regards
> Paul
> WB8TSL
> 
> 
> 
> 
> 
> 
> 
> 
> 
> On Fri, Nov 15, 2013 at 4:53 PM, Gerald Chafee <gchafee at gmail.com> wrote:
> 
>> Does anyone know if they are using original antennas for chains that
>> existed during the heyday of LORAN C?
>> 
>> I remember driving past the tower at the Seneca Army Depot in Romulus, NY ,
>> and I was in awe of the size of the tower. I know the Coast Guard, then
>> Homeland Security had control of the site. I am not sure if the tower is
>> still there since some of the sites were decommissioned.
>> 
>> I was wondering if they will be using the Master/Slave system, or do they
>> have a new way to triangulate?
>> 
>> I know the worry of GPS jamming has caused a lot of worry. I was wondering
>> if cell sites that absolutely need super accurate timing will have LORAN as
>> a backup timing source? I know if they lose GPS, they lose their ability to
>> hand off to adjacent working cells (Island Cell Effect?).
>> 
>> 
>> On Fri, Nov 15, 2013 at 4:18 PM, Bill Riches <bill.riches at verizon.net
>>> wrote:
>> 
>>> Hi Paul,
>>> 
>>> I stand corrected!  Wildwood is up at 1615 now - 30/9!  Beer call at
>> 1700!
>>> 
>>> My last comment was in regards to the last evening activity that was not
>>> Wildwood.
>>> 
>>> 73,
>>> 
>>> Bill, WA2DVU
>>> Cape May
>>> 
>>> -----Original Message-----
>>> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
>>> Behalf Of paul swed
>>> Sent: Friday, November 15, 2013 1:49 PM
>>> To: David McGaw; Discussion of precise time and frequency measurement
>>> Subject: Re: [time-nuts] Loran
>>> 
>>> And by the way it is still on as of 2pm est.
>>> Now the real test. They seem to go home for the weekend and beer time is
>>> typically 5pm or so.
>>> Will it still be on at 8pm? Curious minds want to know.
>>> Regards
>>> Paul
>>> WB8TSL
>>> 
>>> 
>>> On Fri, Nov 15, 2013 at 1:47 PM, paul swed <paulswedb at gmail.com> wrote:
>>> 
>>>> I can only go by the press release that was above and would guess its
>>>> wildwood.
>>>> Its clearly not in ma. That used to hit me with a heck of a signal
>>>> 1000uv plus
>>>> 
>>>> 
>>>> On Fri, Nov 15, 2013 at 10:22 AM, David McGaw
>>> <n1hac at alum.dartmouth.org>wrote:
>>>> 
>>>>> Can you tell whether it is coming from Wildwood or another site?
>>>>> 
>>>>> David N1HAC
>>>>> 
>>>>> 
>>>>> 
>>>>> On 11/14/13 9:02 PM, paul swed wrote:
>>>>> 
>>>>>> Sounds pretty good not banging in here like the old chain did.
>>>>>> austron 2100 says 38db
>>>>>> srs700 says 47 rcvr gain and 25 db noise margin.
>>>>>> hp3856b's says -53dbm or 500uv.
>>>>>> 
>>>>>> Regards
>>>>>> Paul
>>>>>> WB8TSL
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> 
>>>>>> On Thu, Nov 14, 2013 at 5:40 PM, J. Forster <jfor at quikus.com> wrote:
>>>>>> 
>>>>>> What's the signal strength like?
>>>>>>> 
>>>>>>> -John
>>>>>>> 
>>>>>>> =======
>>>>>>> 
>>>>>>> 
>>>>>>> 
>>>>>>> Oh that is indeed interesting that they are moving forward.
>>>>>>>> The GRI is 89700.
>>>>>>>> SRS700 locked and looking good.
>>>>>>>> Just brought the Austron 2100 and 2100F on line.
>>>>>>>> The 2100 is tied to the local RB and the f is tied to the HP3801.
>>>>>>>> The SRS700 looks at the RB.
>>>>>>>> I pulled the Austron 2000 out of the rack several months ago.
>>>>>>>> Needed the space.
>>>>>>>> Regards
>>>>>>>> Paul
>>>>>>>> WB8TSL. Near Boston.
>>>>>>>> 
>>>>>>>> 
>>>>>>>> On Thu, Nov 14, 2013 at 2:41 PM, Tom Van Baak <tvb at leapsecond.com>
>>>>>>>> 
>>>>>>> wrote:
>>>>>>> 
>>>>>>>> Well lets see. Just warming up the srs700.
>>>>>>>>>> UrsaNav must have received some support $ Regards Paul WB8TSL
>>>>>>>>>> 
>>>>>>>>> Paul,
>>>>>>>>> 
>>>>>>>>> See below, via Adobe OCR on a JPG press release:
>>>>>>>>> 
>>>>>>>>> ---
>>>>>>>>> 
>>>>>>>>> From: "UrsaNav Press Contact"
>>>>>>>>> Sent: Thursday, November 14, 2013 10:31 AM
>>>>>>>>> Subject: UrsaNav Accepts eLoran Transmitter from Nautel
>>>>>>>>> 
>>>>>>>>> UrsaNav News Release November 14, 2013
>>>>>>>>> 
>>>>>>>>> Two Companies - One Dream
>>>>>>>>> 
>>>>>>>>> UrsaNav Accepts Delivery of First Production Nautel NlAO eLoran
>>>>>>>>> Transmitter
>>>>>>>>> 
>>>>>>>>> Bedford, Massachusetts, USA.- After extensive Final Acceptance
>>>>>>>>> Testing at Nautel's Hackett's Cove, NS facility, UrsaNav has
>>>>>>>>> accepted delivery of the first production NL40 Loran-C and
>>>>>>>>> Enhanced Loran (eLoran) transmitter.
>>>>>>>>> This
>>>>>>>>> seventh generation Loran transmitter technology is the
>>>>>>>>> culmination of over six years of collaborative development
>>>>>>>>> between the two companies.
>>>>>>>>> 
>>>>>>>>> The transmitter successfully met or exceeded all of the
>>>>>>>>> requirements of the u.s. Coast Guard "Specification of the
>>>>>>>>> Transmitted Loran-C Signal".
>>>>>>>>> Testing was conducted into a simulated antenna matching the
>>>>>>>>> characteristics of a u.s. Coast Guard "standard" 625-foot
>>>>>>>>> Top-Loaded Monopole. The NL-Series transmitters are capable of
>>>>>>>>> transmitting Loran-C, eLoran, Chayka, and eChayka in any
>>>>>>>>> combination at power levels exceeding one megawatt.
>>>>>>>>> They
>>>>>>>>> are qualified for today, and prepared for tomorrow.
>>>>>>>>> 
>>>>>>>>> UrsaNav's President, Charles Schue, shown accepting the
>>>>>>>>> transmitter from Nautel's President, Peter Conlon, commented:
>>>>>>>>> "Resilient PNT begins with complementary technologies, layered
>>>>>>>>> one upon the other in such a way that the user is ensured
>>>>>>>>> improved continuity of operations over a sole-source solution.
>>>>>>>>> eLoran is the terrestrial coprimary complement to GNSS, and our
>>>>>>>>> technology makes eLoran the most economical, efficient, and
>>>>>>>>> wide-area alternative when GNSS is not available."
>>>>>>>>> 
>>>>>>>>> UrsaNav provides the world's most advanced solutions for Low
>>>>>>>>> Frequency Alternative Positioning, Navigation, Timing, and Data,
>>>>>>>>> including high-performance eLoran Receiver, Command and Control,
>>>>>>>>> and Differential Loran technology. We are the exclusive, global,
>>>>>>>>> reseller of Nautel's industry-leading, high-power, Low Frequency
>>>>>>>>> transmitters for Loran/eLoran and Chayka/eChayka.
>>>>>>>>> 
>>>>>>>>> ---
>>>>>>>>> _______________________________________________
>>>>>>>>> time-nuts mailing list -- time-nuts at febo.com To unsubscribe, go
>>>>>>>>> to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>>>>>>>>> and follow the instructions there.
>>>>>>>>> 
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>>>>>>>> 
>>>>>>>> 
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>>>>> 
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>>>> 
>>>> 
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