Is this with approval from the USAF? You said you thought it wasn't from the US, but another country. Or, is this somewhat of intentional interference? Why don't they just move to a different frequency? Or am I really missing something!
Keep in mind that I have no hard evidence of the source of this signal.
Based on were it is being received most consistently and the strongest (do not confuse this with most often reported from) I suspect outside the US as the source. I have been checking it with multiple remotes for the last 48 hours, about once an hour, and it is most often the strongest, regardless of propagation conditions, in Iceland. If it was a US mode I would expect it to be most received in the US and most often strong in the US. Every other US mode is, after all, mostly consistently received in the US. This is what leads me to think it is not US mil, it is not proof at all, but an indicator.
I doubt it is intentional interference, as it would not be a very efficient or affective jammer.
Is it with the approval of the USAF, and why don't they just move to another frequency? If it is a foreign source why should they care if the USAF approves or not? And again, does the USAF "own" that frequency internationally?
It is very likely whoever is the source of that transmission selected 11174.6 kHz without worrying about the USAF, maybe even without being aware the USAF uses 11175. As it is a digital signal it is very likely no one in the network actually listens to the audio on a regular basis so they may not be aware that 11175 USB is being used by someone else. And when you look at the overlap, the 11175 kHz USAF audio does not start until about 11175.3 kHz, the digital signal may not be receiving as much interference from the USAF audio as the USAF audio does from the digital sig.
The only thing you might be missing, if you are missing anything at all, is to think a little less US centric. And to remember that the HF spectrum is used World wide and sometimes not very well coordinated. Some nations do not even have a frequency coordinating entity, or might have one in name only, and that can end up with people/functions on any frequency they want, for whatever reason they want, often determined by whatever equipment they have on hand.
T!
