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  • [EI7GL] Lots of bursts on 28 MHz from Geminid meteor shower - 14th Dec

    From EI7GL via rec.radio.amateur.moderat@21:1/5 to All on Tue Dec 14 19:35:20 2021
    XPost: rec.radio.amateur.space

    EI7GL....A diary of amateur radio activity

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    Lots of bursts on 28 MHz from Geminid meteor shower - 14th Dec 2021

    Posted: 14 Dec 2021 07:21 AM PST https://ei7gl.blogspot.com/2021/12/lots-of-bursts-on-28-mhz-from-geminid.html



    On the morning of the 14th of December 2021, I noticed a lot of meteor
    scatter bursts of weak signals from G0MBA and G0PKT on 28 MHz. Both
    stations are located about 650kms to the east of me and the bursts were due
    to the Geminid meteor shower.
    They are both sending QRSS signals which is very slow morse code which can
    be decoded visually and they transmit about 400Hz below the WSPR signals on
    28 MHz.
    An example of what the signals should look like is shown below. This is
    from a Sporadic-E opening last May.

    I did note this morning that while I was hearing all of these meteor
    scatter bursts, I was getting no WSPR decodes from either station. This was
    no great surprise as WSPR signals are nearly two minutes in length and only exceptional meteor bursts are that long even on a low frequency like 28 MHz.
    As you can tell from the initial image, signals from meteor scatter look a
    bit of a mess and I'm sure this doesn't help with decoding either.
    I did manage some WSPR decodes from both G0 stations later but I suspect it might have been weak Sporadic-E.UTC (y-m-d) TX txGrid RX rxGrid MHz W SNR
    drift km
    2021-12-14 08:38 G0MBA JO01 EI7GL IO51tu 28.126066 0.2 -19 -1 645
    2021-12-14 09:18 G0MBA JO01 EI7GL IO51tu 28.126067 0.2 -20 -1 645
    2021-12-14 09:38 G0MBA JO01 EI7GL IO51tu 28.126065 0.2 -24 0 645
    2021-12-14 08:08 G0PKT JO01mt EI7GL IO51tu 28.126078 0.2 -22 0 647
    2021-12-14 08:38 G0PKT JO01mt EI7GL IO51tu 28.126077 0.2 -15 -1 647
    2021-12-14 09:18 G0PKT JO01mt EI7GL IO51tu 28.126078 0.2 -18 0 647
    2021-12-14 09:38 G0PKT JO01mt EI7GL IO51tu 28.126075 0.2 -18 0 647
    2021-12-14 12:18 G0PKT JO01mt EI7GL IO51tu 28.126076 0.2 -21 -1 647
    28 MHz Meteor Scatter contacts??? ... I wonder if anyone has tried making meteor scatter contacts on 28 MHz with dedicated MS modes like MSK144? Considering how many bursts there are during major showers, contacts in the range of 500 to 1000kms should be really easy.

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