Name this tune

natedawg1604

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So I'm studying for my General license and just starting to dabble with HF listening on a RTL dongle with SDR#. This evening, every few seconds I'm hearing a strong data burst that seems to be bouncing around between 10.4 and 10.8 MHz (see attach audio file). Any ideas on what this might be?

EDIT: After moving my antenna around I'm thinking this could be Intermod from a local DMR or possibly NXDN repeater. When I moved the antenna outside this signal seems to have disappeared and the overall Intermod from AM radio stations seems to have gone down a lot. Hopefully the IC-7300 I'll be getting soon will be a lot more sensitive & selective than my cheapo dongle (which does a damn good job for the price).
 

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dlwtrunked

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Not intermod--a real signal. Definitely USN ROTHR (Relocatable Over the Horizon) radar. current sites are in PR, TX, and VA.
See recent posts by me on such at www.reddit.com in signalidentification (you do not have to log in to see those).
 
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