Is anybody else hearing some form of data transmission on 7.116MHz?
Its quite wide making 7.114 to 7.118 unusable.
I realise that from 7.1 to 7.2 we are a secondary user so the source may not even be amateur. When working QRP from a summit it makes a QSO very difficult if not impossible.
I get a digital signal centred on 7.118 every day, usually starting about 3pm ish. It builds until the frequency becomes unuseable. Presently the frequency is clear with s2 noise here.
In reply to M6HBS:
9.00PM Sunday and its back worse than before. It makes 7.114 to 7.120 unusable with me and its S8 to S9 tonight far worse than previously.
That’s the blighter. Doesn’t sound like RADAR to me, but I’m happy to stand corrected on that. The clicking sent after the callsign and varying power carrier on the 5MHz beacons sounds more like RADAR.
The QRM stopped at about 2340z, I didn’t hear any more Morse apart from that already mentioned. Two passages around 40 seconds long at about 20wpm at 2243z & 2257z.
I left my recorder running while I had my tea & there was some more readable “Morse” sent at 1744z.
It looks like this is some form of RTTY with 1 KHz shift. The tone you hear most of the time is whatever is sending the RTTY just idling. I have slowed my recording down & the tone cycles between the upper & lower frequency at 25Hz.
The readable “Morse” sent at 1744z indicated that the callsign of the station sending the signal is REA4
I would hazard a guess at this being Russian Military or diplomatic traffic.
The above message was repeated at about 1920z with only one character changed.
This station is REA4 & has been been around in different places for donkey’s years (Google the callsign), & is most often listed as headquarters of the Russian Air Force.