3 Aug 2014

10m WSPR - early Sunday

10m WSPR was turned on quite early today and the band is already lively with EU Es signals (LB, I and EA). I shall stay on 10m all day all being well, but may have to close early this evening if the shack is being used as a bedroom for our granddaughter.
There is a local (?) interferer low down in the WSPR sub-band pulsing on and off every 5 seconds or so - any idea what this is? It does not seem to be doing anything bad to decodes,which is a relief. It was there last night too I noticed.
Sunspot count today is 178 (good) with blackouts. 20-30MHz forecast is "normal". I'd expect N-S F2 today on 10m.

UPDATE 1045z:  No 10m F2 propagation seen yet.
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5 comments:

  1. David (G0LRD)Sun Aug 03, 02:50:00 pm GMT+1

    Roger,
    I'm possibly receiving the same interferer on 10m. It seems to be a very regular, time-synchronised noise. It comes on +0.5s and off at +8.0s within each 10 second cycle. Does this match what you are getting?
    David

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  2. Roger G3XBMSun Aug 03, 05:06:00 pm GMT+1

    David, see image for my interfering signal's "pattern". Was yours the same?

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  3. Roger G3XBMSun Aug 03, 05:09:00 pm GMT+1

    David, my interfering signal is not there now. If you are seeing it too it may be coming in via Es.

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  4. David (G0LRD)Sun Aug 03, 05:27:00 pm GMT+1

    Roger,
    Yes, it's stopped here too. Whatever it was, it must have covered a wide area.
    David

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  5. David (G0LRD)Sun Aug 03, 07:40:00 pm GMT+1

    Hi Roger,
    The interferer in the 10m WSPR segment came back again this evening. It's rather odd. It is a very stable carrier modulated at about 0.0875Hz (7 tones every 80 seconds). It exhibits signs of long-distance propagation (fading, no doppler). The frequency of the pulsed carrier is precisely 28.126031 Hz.

    It is rather annoying - I hope it doesn't persist.

    David G0LRD

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