Loggings > HF Mystery Signals

UNID 5100-5140, 320z Strange data transmission

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Josh:
I know a guy who worked at haarp and is at the uni, I'll see if he will give me the dope on perturbing the ionosphere.

Josh:
My guy said the last he heard they have slated a minimalist campaign sometime in November and are in the process of reassembling the transmitters.

Josh:
When asked if the array was still intact, this was his response;
The array is still intact, but they had removed all the control circuitry and instrumentation. There's one lady there who's reinstalling all the 4CX10,000s....all 720 of them. She's got her work cut out!

foxd:
I saw something like this recently and the nearest thing I could find that fit the description was CODAR.

https://en.wikipedia.org/wiki/Coastal_ocean_dynamics_applications_radar

Token:

--- Quote from: foxd on August 01, 2016, 1801 UTC ---I saw something like this recently and the nearest thing I could find that fit the description was CODAR.

https://en.wikipedia.org/wiki/Coastal_ocean_dynamics_applications_radar

--- End quote ---

The signal being discussed here is not CODAR.  The signal was much too strong, heard over too wide an area, and does not use the same waveform as CODAR.  (edit) Let me rephrase that a bit, one of the waveforms observed, the 1 sweep per second LFMCW (Linear Frequency Modulated Continuous Wave), was similar and could be mistaken for CODAR, the other waveforms were not similar.  Even the 1 second sweep rate waveform, while similar to CODAR, was incorrect though, as CODAR uses LFMOP (Linear Frequency Modulation On Pulse) and this was LFMCW.  It was more similar to WERA, which is like CODAR (and does an almost identical job) but using LFMCW, however this was not WERA.

CODAR can have different widths and repetition speeds, but this video is pretty representative of CODAR:
https://www.youtube.com/watch?v=zupfLO1PjrA

T!

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