[time-nuts] 1900kHz radiolcation testing on east coast US?

Graham planophore at aei.ca
Mon Dec 8 05:30:22 EST 2014


Radiolocation may be a bit misleading.

Some first thought that this was CODAR but it is not, at least not what 
I am familiar with but it may be another variation of an ocean surface 
wave RADAR type of system but it is certainly not like one I have heard 
before.

cheers, Graham ve3gtc

On 2014-12-07 20:03, paul swed wrote:
> Not aware of any testing plus it makes no sense these days. LORAN long ago
> abandoned and was in that range and Loran C in the US dead. UrsaNav has
> been quite for quite a while.
> Regards
> Paul
> WB8TSL
>
> On Sun, Dec 7, 2014 at 7:09 PM, Bob Camp <kb8tq at n1k.org> wrote:
>
>> Hi
>>
>> 120 Hz sub structure suggests a (much lower power) switching power supply
>> run amok. I certainly would not design a system that would have virtually
>> no immunity to power line noise …..
>>
>> Bob
>>
>>> On Dec 7, 2014, at 6:28 PM, Tim Shoppa <tshoppa at gmail.com> wrote:
>>>
>>> Would any time-nuts know of radiolocation-type testing going on, on east
>>> coast of US, maybe around Maine? There is a very strong wideband signal
>> on
>>> 1900-1920kHz, with a 120Hz substructure and a 4Hz rep-rate, likely
>> megawatt
>>> power range.
>>>
>>> Sound sample (recorded with 2400Hz receiver bandwidth, although the whole
>>> signal is far far wider bandwidth) at
>>> http://www.trailing-edge.com/1910-intruder.wav
>>>
>>> Pics of the waveform at http://www.trailing-edge.com/1910-intruder-1.png
>> and
>>> zoomed in at http://www.trailing-edge.com/1910-intruder-2.png
>>>
>>> Tim N3QE
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