• ARLP028 Propagation de K7RA

    From CX2SA@21:5/101 to PROP on Fri Jul 12 23:00:12 2019
    R:190712/2151Z 25243@LU3DVN.USH.TDF.ARG.SOAM LinBPQ6.0.17
    R:190712/2150Z 8015@PY2BIL.SP.BRA.SOAM LinBPQ6.0.18
    R:190712/2149Z 4319@CT1ENI.CT1ENI.CTST.PRT.EU LinBPQ6.0.18
    R:190712/2149Z 33701@F1OYP.FAQI.FRA.EU BPQK6.0.18
    R:190712/2146Z 24000@N9PMO.#SEWI.WI.USA.NOAM BPQ6.0.18
    R:190712/2145Z @:CX2SA.SAL.URY.SOAM #:9980 [Salto] FBB7.00e $:ARLP028

    From: CX2SA@CX2SA.SAL.URY.SOAM
    To : PROP@ARL


    ZCZC AP28
    QST de W1AW
    Propagation Forecast Bulletin 28 ARLP028
    From Tad Cook, K7RA
    Seattle, WA July 12, 2019
    To all radio amateurs

    SB PROP ARL ARLP028
    ARLP028 Propagation de K7RA

    Like June 24 to 27, July 7 had a new spot from cycle 25, according
    to the magnetic signature. This week's brief appearance was last
    Sunday with a daily sunspot number of 12.

    Average daily solar flux declined marginally from 67.5 to 67.1.

    Predicted solar flux for the next 45 days is 67 on July 12 through
    August 25. That's right, 67 on every day.

    Predicted planetary A index is 8 on July 12, 5 on July 13 to 15,
    then 12 and 8 on July 16 and 17, 5 on July 18 to 27, 8 on July 28, 5
    on July 29 through August 4, then 12, 15 and 12 on August 5 to 7, 5
    on August 8 to 23, 8 on August 24 and 5 on August 25.

    Interesting article on space weather:

    https://bit.ly/2G7Oz5g

    A recent video from Tamitha Skov:

    https://youtu.be/q066gUaSsAU

    OK1HH is taking a week off from his geomagnetic forecast, and will
    return next week.

    On Thursday night as I put this bulletin to bed, I am enjoying
    monitoring remote receivers around the world, via
    https://sdr.hu/?q=kiwisdr . Currently listening to European CW
    traffic on 40 meters from a receiver in Ukraine.

    If you would like to make a comment or have a tip for our readers,
    email the author at, k7ra@arrl.net.

    For more information concerning radio propagation, see the ARRL
    Technical Information Service at
    http://arrl.org/propagation-of-rf-signals. For an explanation of
    numbers used in this bulletin, see http://arrl.org/the-sun-the-earth-the-ionosphere.

    An archive of past propagation bulletins is at http://arrl.org/w1aw-bulletins-archive-propagation. More good
    information and tutorials on propagation are at http://k9la.us/.

    Monthly propagation charts between four USA regions and twelve
    overseas locations are at http://arrl.org/propagation.

    Instructions for starting or ending email distribution of ARRL
    bulletins are at http://arrl.org/bulletins.

    Sunspot numbers for July 4 through 10, 2019 were 0, 0, 0, 12, 0, 0,
    and 0, with a mean of 1.7. 10.7 cm flux was 67.8, 67.5, 66.5, 67.3,
    66.5, 66.8, and 67.6, with a mean of 67.1. Estimated planetary A
    indices were 5, 5, 3, 5, 9, 17, and 15, with a mean of 8.4. Middle
    latitude A index was 8, 6, 5, 5, 7, 16, and 13, with a mean of 8.6.
    NNNN



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