[time-nuts] eLORAN in the Antipodes ? (was: Re: eLORAN will be on the air GRI 99600)

[Gilles Clement]

Would’nt 100khz carrier propagate mostly by ground wave (during day time) ? So following earth curvature ?
Gilles.


> Le 7 août 2020 à 21:34, paul swed <paulswedb at gmail.com> a écrit :
> 
> Taka
> Yes it does. More ionosphere than air. It would be skywave or indirect
> path. I mentioned that earlier.
> Now silly thought would a huge antenna work especially if you are at the
> antipode. Further would it be gray line propagation.
> Thats just silly talk. But something to think about.
> Regards
> Paul.
> 
>> On Fri, Aug 7, 2020 at 2:01 PM Taka Kamiya via time-nuts <
>> time-nuts at lists.febo.com> wrote:
>> 
>> Wouldn't such a long distance propagation result in less precision?  The
>> signal will have to go through distance through air which isn't constant in
>> dialectic values.  Wouldn't it be problematic for level of accuracy we
>> pursue?
>> 
>> ---------------------------------------
>> (Mr.) Taka Kamiya
>> KB4EMF / ex JF2DKG
>> 
>> 
>>    On Friday, August 7, 2020, 9:14:23 AM EDT, paul swed <
>> paulswedb at gmail.com> wrote:
>> 
>> I believe South Korea is indeed building new eLORAN chains. I have seen
>> mention of it.
>> With respect to distance In the US I could occasionally receive the
>> European West chain at night and in the winter. Thats about 3200 miles. It
>> would also be by skywave so that deteriorates accuracy.
>> Regards
>> Paul
>> WB8TSL
>> 
>>> On Fri, Aug 7, 2020 at 5:26 AM Björn <bg at lysator.liu.se> wrote:
>>> 
>>> Are not South Korea are building one? new eLoran chain?  Are they
>>> transmitting? But don’t underestimate the distances from south east Asia
>> to
>>> the far side of Australia.
>>> 
>>> /Björn
>>> 
>>> Sent from my iPhone
>>> 
>>>> On 7 Aug 2020, at 10:24, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:
>>>> 
>>>> --------
>>>> Hugh Blemings writes:
>>>> 
>>>>> Been following this thread with the usual mixture of joy, awe and
>>> wonder
>>>>> (truly!) - fantastic stuff :)
>>>>> 
>>>>> My read of the situation is that there is next to no chance of
>>> receiving
>>>>> any meaningful signal at the VLF frequencies in question down here in
>>>>> Melbourne - a great circle path of some 10,000 mi / 16000 km ?
>>>> 
>>>> You might be able to pick out the Chinese Loran chains, I believe
>>> they're still up.
>>>> 
>>>> (Use sdr.dh web-sdr's to find out ?)
>>>> 
>>>> --
>>>> Poul-Henning Kamp      | UNIX since Zilog Zeus 3.20
>>>> phk at 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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