[RFI] 8982 KHz RFI?

[Gedas]

So for what it is worth I monitor these frequencies a good deal of the 
time, like right now and have heard numerous transmissions from Andrews 
AFB (Mainsail), Puerto Rico, and the west coast, as well as unknown 
aircraft requesting radio checks.

All 3 primary channels are clear of any RFI or interference and have 
been for me. I will continue monitoring and will report back if I start 
hearing any interference. It should be noted that here in Indiana late 
at night only the lower frequencies have any propagation. So when the OP 
stated he hears it at night I do not think it is coming from Russia esp 
on 15 MHz or even 11 MHz. I use several outdoor antennas for the various 
frequencies, like 40m dipole and 75m inv-v both with feedpoints at 70'. 73

Gedas, W8BYA EN70JT

Gallery at http://w8bya.com (under repair)
Light travels faster than sound....
This is why some people appear bright until you hear them speak.

On 9/23/2021 12:37 PM, KD7JYK DM09 wrote:
>> Is the propagation to you ionospheric, or local line-of-sight?
>> IOW, can you detect any fading, or frequency selective fading?
>
> From what the fellow says, "The noise comes in with the darkness".
>
> Here is his initial post:
>
> "The last couple days I have been hearing this oddball jamming.  I am
> using several HF radios here on different frequencies. The jamming is
> drifting into each radio. Talk about annoying.  It can be seen on an SDR
> screen. I guess its Russia as it comes in on the gray line lasting most
> of the night."
>
> Could be odd RFI, strange that it's on, at least, the three primary 
> frequencies he monitors, they are military frequencies, show up on the 
> east, and west coasts, and from snooping around SDRs, on the east 
> earlier, then gone (he says most of the night, but I can't find it on 
> several receivers hours later).  When I saw/heard it on a west coast 
> SDR, the sound and image on the waterfall matched what the fellow had 
> sent me earlier, from the east coast.
>
> I'll have to watch/listen more to get a feel for it, checking here, if 
> anyone knew of anything.
>
> Kurt
>
>
>
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