Friday 3rd May 2019 – Sporadic E opening

Friday was a good day for Sporadic-E, with further opening to South America on 12m and 10m. 6m reception was using the Wellbrook Loop ALA100LN at IO83ls – it’s not designed for it, but it does perform. Changes have been made to the antenna signal distribution system in an attempt to improve reception on 12m and 10m in the light of previous results – it’s too early to draw conclusions.

2 Replies to “Friday 3rd May 2019 – Sporadic E opening”

  1. Hi Geoff

    I was looking at your 10m map for the 3rd of May 2019 and comparing it with my own…

    The one thing I noticed is that you heard very few stations in the skip zone i.e. those in the 200 to 1000 km range. These would be usually very weak signals as they are either aircraft scatter, meteor scatter or backscatter.

    Maybe the loop isn’t hearing the weak signals? It might be worth putting up a simple dipole as an experiment to do a comparison.

    73’s de John, EI7GL

    1. Hi John,

      Thanks for your comment, I enjoy reading your blog. With regard to your suggestion, I’m considering various possibilities – it could be the antenna, which is not designed for these frequencies. Putting up another antenna (perhaps just for 10m) and comparing is a good idea. Another possibility is that I’m receiving on 14 bit ADC SDRs (KiwiSDR and Red Pitaya) and I suspect strong LW/MW signals are limiting their dynamic range. I have a few experiments to perform to see where the problem lies, and I’ll report findings in this blog.

      73 Geoff

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