HFU HF Underground
Loggings => Shortwave Broadcast => Topic started by: 4405486 on June 27, 2010, 2340 UTC
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Can anybody Identify this? +/- 35 wpm Morse Code too fast for me to copy under poor conditions.
Is this some Amateur Frequency in another ITU Region? or Coastal Maritime "Marker"?
Could only copy bits and pieces CQ ? BT K could not make out a call sign.
Co-channel with at least two other distorted Spanish Language Broadcasters. Through strong atmospheric and "buzzing" continuum
noise and turbulence. I've noticed this before on Saturdays (local) and wondered why CW was on this frequency?
Possibly Tone Modulated- it's not the Cubans, they can't send that fast- neither can I.
Geo-Mag Storm due to Coronal Hole WWV @ 0218 UTC reported SFI: 75 A: 14 K: 3
When the event is caused by Coronal Hole, seems to be some lack of correlation between Indices and the severity of the storm; or
so it seems to me.
At any rate I'll go google ITU Regions. Cheers
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OOPS! Mystery Solved. These are image signals from the 40m Amateur Bands. Past Saturday propagation was fairly good and was observing a number of CW signals in this Broadcast Segmant. Assuming a Receiver IF Frequency of 455 KHz; double that value giving you 910 KHz. Your Receiver (if it's cheap like mine) might pick up image signals 910 KHZ above or below a strong signal on a Fundamental Frequency. For example I noticed CW pile-ups on 6140 KHz (Broadcast Segment of the Band); Thus: 6140 + 910 = 7050 KHz. When I tuned to 7050 KHz (CW portion of the 40m Amateur Band) I heard these same CW pile-ups in thier proper location and much stronger. In my case there were no Image signals 910 KHz above; say, 7050 KHz at 7960 KHz. Cheap Radio with Poor IF Filtration. Cheers