[time-nuts] Re: UTC Backbone in Europe

[Bob Camp]

Hi

Something like this is designed to take out a Loran (or similar :) :) :) ) system over a large area (like an entire country). 

To “mess things up” for a timing system, you don’t need to take things out over an entire country. You likely know exactly where the timing hubs you are after are. All you need to do is mess things up in the vicinity of that building. For Loran or for GPS, it does not take a lot to do that. 

The era of broadband jamming seems to be long gone. The approach for decades has been to “spoof” the system and get your result that way. Loran or GPS, the system is not delivering megawatts to your receiver. Unless the Loran is in your back yard (yes that might be the case :) ), you will be well below the milliwatt level … A near field setup is all you need. 

Bob

> On Nov 24, 2024, at 11:14 AM, Magnus Danielson via time-nuts <time-nuts at lists.febo.com> wrote:
> 
> Hi again,
> 
> On 2024-11-21 23:37, Poul-Henning Kamp via time-nuts wrote:
>> Amazingly Sweden did build a VLF jammer and tried to hide it.
>> 
>> They built the "RT-02" aka "Frederiksson" "Chayka" (= USSR Loran-C)
>> jamming system and put fake parabolic antenna on the transmitter
>> masts, to make it look like a microwave-link.
>> 
>> The only credible source is in swedish:
>> 
>> 	https://www.fht.nu/fv_bilder_radio_rasandare_rt_02.html
>> 
> This source is not only credible, but I know several of the people who wrote it, and one of them was responsible for it during it's operation. He initiated that material was declassified such that this public report could be written. The introduction shows that it was reviewed rigorously to ensure it did not contain any classified information. Back in the day, it was operated intentionally so it would not look like a military installation, so it was forbidden to drive up to the stations in any military vehicle. It was operated by Televerket Radio for all what people saw. Then again, information leaked from espionage, this is known. Exactly how much it was considered is another thing. You get to enjoy seeing the classification stamping on the material too.
> 
> As people ask about using LORAN-C I need to inform them about these things. Yes, these towers are far from discrete, but it has been done.
> 
> Cheers,
> Magnus
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