[time-nuts] eLoran test 6 Feb for almost 2 months

[Bob Camp]

Hi

Loran C is a pulse based system. All transmitters world wide run on the same 100 KHz frequency. The thing that 
distinguishes one transmission from another is the repetition rate of the signal. If you have a spectrum analyzer
and hook up a piece of wire near one of the transmitters, the signal shows up over many 10’s of KHz of 
bandwidth each side of 100 KHz. With reasonable gear, you can pick up the European Loran chains in the US
on a regular basis. You can also pick up the Russian system that runs on the same frequency. The gotcha there
is that you are looking at “skywave” rather than “ground wave” signals to some degree. That degrades their value
for timing or for navigation. (Yes, it is all a lot more complicated that than very simple / quick summary). 

Bob

> On Feb 3, 2017, at 1:20 AM, John Marvin <jm-tnut at themarvins.org> wrote:
> 
> I don't have a Loran receiver, and I live in Colorado. But I'd still like to check late at night to see if I can see a signal on my SDR receiver. I tried looking at old posts, and did some research online, but the best I can tell is that Loran C (and I assume eLoran) is transmitted at around 100 Khz. Anyone know precisely what frequency(s) are used by the Wildwood eLOran station?
> 
> Regards,
> 
> John
> 
> 
> On 2/2/2017 11:59 AM, paul swed wrote:
>> Well this is nice almost a 2 month long test.
>> So if you thought about seeing if you could receive eLoran on your Loran C
>> receiver this is a good opportunity. With respect to the data channel
>> pretty sure none of the receivers we have know or care about it.
>> 
>> The Wildwood, NJ eLoran transmitter will be continuously broadcasting from
>> 0900 (EST) on 06 February 2017 through 1200 (EST) on 31 March 2017.
>> Wildwood will be broadcasting as 8970 Master and Secondary most of the time
>> but occasionally may operate at other rates.
>> 
>> 
>> 
>> Please note that the Loran Data Channel (LDC) will be undergoing testing
>> and may be unavailable or unreliable for short periods of time
>> 
>> from 06-10 February 2017.
>> 
>> Regards
>> Paul
>> WB8TSL
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