Discussion in 'Ham Radio Discussions' started by K7WFM, Oct 31, 2013.
It seems to be centered on 7.040
I hear it here
I think it is the Russians, every time we hear it down on seventy-five we can find Russian fishing boats talking to each other.
I can hear a very weak pulse transmission on 7040 - but IMO that is not a woodpecker- the woodpecker was very wide-hundreds of Kcs at times.
I suspect you are hearing the Russian OTHR, (Over The Horizon Radar, see http://en.wikipedia.org/wiki/Over-the-horizon_radar), station that runs in the 40 Meter band, (elsewhere as well), it pretty well follows the MUF. The Wiki article does not talk about THIS one, just OTHR in general. The Woodpecker refers to another OTHR station the Russians used about 40 years ago, that literately wiped out the entire band when it was running for entire planet at once. Not kidding about that, I remember when it started, DX and normal QSO's were over... They ran about 50 MW to a truly massive antenna array...
Fortunately for us they have reduced the bandwidth in the previous 40 years... Look here (http://en.wikipedia.org/wiki/Russian_Woodpecker) for more on the Woodpecker, and to see the antenna array. I use the current OTHR to tell where the MUF is... Also on 40 listen at 7.0395 and you will hear a number of stations all sending single letters in Morse Code... They are from the Russians as well... That is how I check 40 to see if it is open to Asiatic Russia at night. See here, (http://en.wikipedia.org/wiki/Letter_beacon), for more information on the Letter Stations.
Thanks for the info. I do remember the old Russian woodpecker.
Likewise it I remember it only too well. Hard to work with even on CW.
However even allowing for the more sophisticated stuff of today...what I could hear here in the UK did not sound like OTHR
Wider than CODAR?
To me it sounded like the old Russian wp but, at a quicker interval.