Messages

1

Other / Re: Mystery Signal On Multiple Bands

« on: May 23, 2014, 1439 UTC »

I suspected something like that as I saw a few cases of ionospheric sounder scans originating from them. It is surprising how prevalent these things are on the HF bands.

Thanks,


Warkite
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ANAN 200D
Skanti TRP 8000
43 ft Non Resonant Vertical
Pixel Tech Pro 1B Mag Loop

2

Other / Mystery Signal On Multiple Bands

« on: May 22, 2014, 1413 UTC »

Hello All,

I've been seeing a strange signal showing up on multiple bands. I'm seeing this on the waterfall of my ANAN SDR. It is very strong from the Gulf Coast region of the US.

Listening on SSB (see attached video), it sounds like a low note on a big church organ and each block has a different note. The blocks last from 200 ms to 2 seconds and is about 10khz wide. Sometimes it's preceded by 3 continuous wave (CW) tones.  I've also heard it on my backup radio. A buddy across town has heard it so it's not some type of smart sensor at my location.

The frequencies I've seen it on are 11.4 Mhz, 13.8 Mhz, 19.3 Mhz, 27.6 Mhz among others. It's intermittent and frequency hops 50 or 100 Khz. It may also be different stations on nearby frequencies.

Here is a movie version of the signal:

https://drive.google.com/file/d/0B9ZaiT30jqAXNVZ0cnBuVlRjelU/edit?usp=sharing


Thanks for your help,

Warkite