Who knows what does this noise is? Strange noise heard on shortwave. 27mHz 11m

[BsoxFireCaphs]

it can be russian horizont radar

[mrmanxelmer]

Packet is NOT just used by Ham operators. Get packet software, build the box, wire up the radio and you can use anything to play Packet. Plenty of 27mhz activity using packet - plenty of packet activity on the Free to Air PMR as well. Try listening to a packet signal on vhf or uhf - and then switch to sideband.

[kristinloveschevys]

27.935 USGOV

27.940 94 AU MARITIME

27.945

27.950 95 PNG MARITIME/USGOV

27.955

27.960 96 AU MARITIME/USGOV

27.965 MARS

27.970 97 PNG MARITIME

27.975 MARS

[reddog694uk]

It's a dog barking !!

[alotito]

HAARP uses frequencies between 2,8 e 10 MHz.

[endrizo]

HAARP ?

[mrmanxelmer]

Put in AM or FM - its 11m (CB) packet stations.

[alotito]

@mrmanxelmer CB dont transmits packet. Packet is a mode used by Amateur Radio. As other comments said, it is OTHR. Over The Horizon Radar. Note that the frequency changes.

[mnpd007]

Some kind of a radar would be my guess. You are right in that it is not a data burst of any kind. It also is too intermittent to be a jammer.

[roolpeiniger]

This is OTHR!

The operation is between 27.000 and 29.950

Most operations were spotted between 27.400 and 28.400

The mystery on that opertions is the copy around the world

On a QSO with an station from canada he told me to have the OTHR with 5/9

At the same time here in germany i had the same 5/9

20 min later a station from texas told the same

another 30 mins later the same report from poland and russia

seems to be an radar network but wich country is still unknown

[roolpeiniger]

@roolpeiniger and the best is

an few nights ago is have a good copy on a numberstaion on 27.800 USB

sounds same like the andrews AFB station on 4.724 USB

it's very mysterious to have all these copys in the 11 and 10m band

a friend of mine told me that can be a great military exercise with the US/Nato early warning unit in poland and germany

[alotito]

@roolpeiniger It is very interesting.

[alotito]

@roolpeiniger Many people is telling me it is in US. It is very interesting what you said because it is heard worldwide.

[SargonAnkro]

0:24 - wow! First time in HAM history when dog is used as a jammer. Strong signal, nice catch! ;] ;]

[MultiSwl]

it's possible georadar tx , also here in south europe it's possible copy this tipe of signal on 11 meters band, and not only on this frequency, in special mode when the propagation it's open

[fredturd]

Easy...it's a dog barking.

[toughcookie128]

Finally, I think it's the OTH radard in california: search in google for: SRI International then click on the company web site then Engineering systems link then the Over the horizon radar and you'll see the California OTH radar page. Wow, it's a 20MW transmitter.

[alotito]

@toughcookie128 I´ve found the site. Very good.

[kristinloveschevys]

@alotito also, search "horizontal radar" on you tube. One should come up immediately with some sort of finnish othr if u want to hear what they sound like

[toughcookie128]

I heard the exact same noise here in Canada. This noise changes frequency every 2 or 3 secs. Always between 27.425 and 27.990mhz. I never heard it on the 10 meter band though.

[Starbuckin]

Thanks for the vid response... I'm approving it. It's the same as on mine OTH Radar, AND on 27 MHz!!!!!! Wow!

[SWL1409]

It sounds like an OTH radar.

[alotito]

@SWL1409 Do you know who uses such kind of radar?

What is the use and what is the objective?

[SWL1409]

@alotito Well I think that military are using it. I think that it is used to scan ocean surface.