Military 4780KHz buzz station?

[w1wv]

Monitoring a station transmitting a continuous 'buzz' on 4780Kc (s-6 level) adjacent a SWBC station on 4765 Kc. This is as of 3/6/2022 0340Z. Some what broadband, about 4700-4800 Kc wide. Curious as to what this is (jamming?); anyone else receiving this signal? Curious to know what it could be. Audio in zip file.

Thanks,
Denis

 

[Audiodave1]

Nothing in SE PA

 

[Mophead]

I downloaded your sample and listened to it and I think it sounds electrical and probably local to your QTH.

 

[popnokick]

So it's not this on a new or additional frequency? -
Re : The Buzzer 4.625 mhz....

 

[w1wv]

I believe it is new. The signal on 4780Kc is continuous and lasts for hours on end.

 

[w1wv]

I downloaded your sample and listened to it and I think it sounds electrical and probably local to your QTH.

I traveled to a nearby park with a portable SW RX and I can receive this station in the field. Definitely not local or QTH generated.

I tried to post a video but cannot due to size.

 

[w1wv]

Videos posted on my YouTube Channel. Search: W1WV_Denis or try link below.

https://www.youtube.com/channel/UCBMqoqK4jP1LEZsS1CHQkog

 

[w1wv]

So it's not this on a new or additional frequency? -
Re : The Buzzer 4.625 mhz....

I'm receiving the typical buzzer on 4625Kc presently which is on/off. The 4780Kc is a continuous buzz.

Denis

 

[w1wv]

I downloaded your sample and listened to it and I think it sounds electrical and probably local to your QTH.

Thanks. It's definitely not QTH generated. Been receiving it both home and in the field.

 

[hakwye8518]

I'm receiving it s6-7 02:32utc and I'm out by islip airport long island ny

 

[Token]

Monitoring a station transmitting a continuous 'buzz' on 4780Kc (s-6 level) adjacent a SWBC station on 4765 Kc. This is as of 3/6/2022 0340Z. Some what broadband, about 4700-4800 Kc wide. Curious as to what this is (jamming?); anyone else receiving this signal? Curious to know what it could be. Audio in zip file.

Thanks,
Denis

Based on both your screen shots and your sound file, this is a radar. Which specific radar it is I do not know, but it sounds rather like the Russian Sunflower. However, most of the time I have heard the Sunflower it has not been using a 200 Hz PRI as this recording does.

I would go with almost certainly radar. Normally I would say Sunflower is a leading candidate, but from your location at the times of your videos (outside, daylight, with the portable) I would not expect you to hear any Sunflower, so it has to be some other radar. The Canadians have several radars that could be a candidate, but I don't receive them often enough to have a feel for them.

T!

 

[shortwaver]

I just checked and I am receiving that signal very strong at 4780 at my QTH in southern New England.

Listening with SDR RSP1 and ParElectronics Endfed

 

[radiocacher]

It is very strong here in North Carolina.

 

[522]

Heard that here in Utah this afternoon as well.
Nothing at the moment.