[RFI] 30M OTH Radar?

[Pete Smith N4ZR]

Thanks, Don and Jim for the confirmation - glad it's gone, though it's 
interesting that FT8 continued to work through it.  I had the same 
thought about the 50-Hz spacing.

73, Pete N4ZR

On 10/10/2023 11:24 PM, Don Kirk wrote:
> Hi Pete,
>
> Looking at the RF spectrum that signal occupied a total of 20 KHz 
> (10.135 to 10.155 MHz) with lines every 50 Hz within.  It did indeed 
> look like the typical OTH radar signal to me and a quick check of 
> heading using the portable flag indicated it's heading was 
> approximately 47 degrees from my QTH near Indianapolis.  Also checked 
> using some web based SDR receivers and it was very strong in Europe 
> too.  A heading of 47 degrees from my QTH put it on a line right 
> through England, Belgium, bottom corners of Austria and Germany as 
> well as Israel (which was probably just a coincidence) and Saudi 
> Arabia, as well as the bottom of Newfoundland.  Since it was a Skywave 
> signal and I just did a real quick heading check my 47 degree reported 
> heading is just a ballpark value so take it with a grain of salt.  It 
> was on at 0224 UTC when I first checked but it's now 0300 UTC and it's 
> no longer present.
>
> Just FYI,
> Don wd8dsb
>
> On Tue, Oct 10, 2023 at 9:54 PM Pete Smith N4ZR <pete.n4zr at gmail.com> 
> wrote:
>
>     at 0114Z, a signal suddenly appeared in the FT8 segment of 30M,
>     every 50
>     Hz from top to bottom.  As I write this it's still there.  I presume
>     another radar?
>
>     -- 
>     73, Pete N4ZR
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