• 2 The ARRL Letter for September 21, 2017

    From mark lewis@1:3634/12.73 to all on Fri Sep 22 14:07:18 2017
    Gray said he was influenced by his utility technician father's curiosity about,
    and experiments with, electricity that led him into his own interest in radio, starting with a crystal radio and later a regenerative receiver built during World War II when Amateur Radio was suspended for the duration. Gray said he entered high school "with the conviction I was going to study electrical engineering."

    According to MIT, Gray, as a professor, was part of a 1960s effort "to overhaul
    the way electrical engineering was taught, moving the focus away from vacuum tubes and squarely onto semiconductor electronics." Working with colleagues at MIT, Stanford, UC Berkeley, Raytheon, and IBM, he wrote seven textbooks and other materials. Gray was a life fellow of the Institute of Electrical and Electronics Engineers, and a member of the National Academy of Engineering.

    Gifts in Gray's memory may be made to MIT's Aging Brain Initiative to support research on Alzheimer's disease. Read more. -- Thanks to MIT; Mike Keane, K1MK,
    and media accounts

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    In Brief...

    Hurricane Damage Forces Changes to Planned DX Operations: Members of Argentina's Yaguarete DX Group, expected to be active as PJ7T from Sint Maarten
    from October 24 through November 4, have cancelled their plans due to Hurricane
    Irma damage. "Hurricane Irma destroyed 95% of infrastructure on the island, and
    it will be impossible to arrive and live there for a long time," the group said
    in its announcement. It has changed the destination for its fall DXpedition to San Andres Island and is in the process of working out the formalities. Meanwhile, the PJ7TM station of Tom Metz, K2GSJ, is said to have been "wiped out," and Metz is heading there in October to repair the damage. Post-Hurricane
    Irma drone and ground video in Sint Maarten is available on YouTube. W3HNK and K3NK also have dropped plans to operate from Guadeloupe and Sint Maarten from October 23 until November 1, including the CQ World Wide DX SSB Contest. The Polish team's mid-November TO2SP DXpedition to St. Barthelemy Island is still a
    go, however, "barring any further surprises," a team spokesperson said. -- Thanks to The Daily DX for some information


    AMSAT 2017 Annual Meeting and Space Symposium Issues Second Call for Papers: The AMSAT 2017 Annual Meeting and Space Symposium has issued a second call for papers. The event takes place the weekend of October 27-29 in Reno, Nevada. AMSAT invites proposals for papers, symposium presentations, and poster presentations are invited on any topic of interest to the Amateur Satellite community. Tentative presentation titles are requested as soon as possible, with a final copy due by October 6 for inclusion in the printed proceedings. Send abstracts and papers to Dan Schultz, N8FGV. -- Thanks to AMSAT News Service via Dan Schultz, N8FGV

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    The K7RA Solar Update

    Tad Cook, K7RA, Seattle, reports:Over the past week, solar indices declined. Lower activity persists, and the uptick in solar activity on September 2-10, when sunspot numbers were 71, 96, 122, 122, 79, 94, 89, 49, and 38 and solar flux was 100, 120, 140, 121, 133, 129, 117, 107, and 100 will probably not be seen again until the upside after solar minimum, perhaps in 2021 or 2022.

    But perhaps we will be surprised again.

    Average daily sunspot numbers declined over the past few weeks from 87.3 to 45 and 13.6, and average daily solar flux from 114.1 to 97.6 and 72.6.

    Average daily planetary A index was 18, 27.3, and 21.1, while average mid-latitude A index (measured in Virginia, at a magnetometer on Wallops Island) was 16.7, 18.3, and 17.1.

    Predicted solar flux is 74, 73, 80, and 85 on September 21-25; 90 on September 26-27; 105 on September 28; 115 on September 29-October 6; 110, 85, 76, 75, 74,
    and 73 on October 7-12; 72 on October 13-14; 75 on October 15-19; 95 on October
    20; 110 on October 21-25, and 115 on October 26 through November 2.

    Predicted planetary A index is 8, 5, 8, 12, 16, 8, and 35 on September 21-27; 20 on September 28-29; 18, 15, 12, and 8 on September 30-October 3; 5 on October 4-10; 25 on October 11-13; 20, 15, 12, and 10 on October 14-17; 5 on October 18-19; 8, 18, 12, and 8 on October 20-23; 20 on October 24-26; 18, 15, 12, and 8 on October 27-30, and 5 October 31-November 4.

    Sunspot numbers for September 7-13, 2017 were 94, 89, 49, 38, 23, 11, and 11, with a mean of 45. The 10.7-centimeter flux was 128.5, 116.8, 107.2, 100.2, 79.9, 75.5, and 75.1, with a mean of 97.6. Estimated planetary A indices were 38, 96, 6, 7, 11, 18, and 15, with a mean of 27.3. Estimated mid-latitude A indices were 23, 50, 6, 12, 8, 16, and 13, with a mean of 18.3.

    Send me your reports or observations.

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    Just Ahead in Radiosport

    * September 23 -- AGCW VHF/UHF Contest (CW)
    * September 23-24 -- CQ Worldwide DX Contest (RTTY)
    * September 23-24 -- Maine QSO Party (CW, phone)
    * September 23-24 -- Texas QSO Party (CW, phone, digital)
    * September 27 -- SKCC Sprint (CW)
    * September 27 -- UKEICC 80-Meter Contest (CW)
    * September 27 -- RSGB 80-Meter Autumn Series (Data)

    See the ARRL Contest Calendar for more information. For in-depth reporting on Amateur Radio contesting, subscribe to The ARRL Contest Update via your ARRL member profile e-mail preferences.

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    Upcoming ARRL Section, State, and Division Conventions

    * September 22-23 -- W4DXCC/SEDCO Convention, Pigeon Forge, Tennessee
    * September 23 -- Iowa State Convention, Sergeant Bluff, Iowa
    * September 23 -- Washington State Convention, Spokane Valley, Washington
    * September 29-30 - Wisconsin State Convention, Milwaukee, Wisconsin
    * September 30 -- North Dakota State Convention, West Fargo, North Dakota
    * October 6-8 -- Mid-Atlantic States VHF Conference, Bensalem,
    Pennsylvania
    * October 7 -- South Carolina Section Convention, Rock Hill, South
    Carolina
    * October 7-8 -- Great Lakes Division Convention, Brooklyn, Michigan
    * October 13-14 -- Florida State Convention, Melbourne, Florida
    * October 14 -- Pacific Northwest VHF Society Conference, Moses Lake,
    Washington
    * October 20-22 -- Pacific Division Convention, San Ramon, California
    * October 21 -- Wisconsin ARES/RACES Conference, Wisconsin Rapids,
    Wisconsin
    * October 22 -- Connecticut State Convention, Meriden, Connecticut
    * October 28 -- Arizona State Convention, Maricopa, Arizona
    * November 4-5 -- Georgia State Convention, Lawrenceville, Georgia
    * November 11 -- HamJam Convention, Alpharetta, Georgia
    * November 18-19 -- Indiana State Convention, Fort Wayne, Indiana

    Find conventions and hamfests in your area.

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    )\/(ark

    Always Mount a Scratch Monkey
    Do you manage your own servers? If you are not running an IDS/IPS yer doin' it wrong...
    ... Every 7 minutes.... someone in aerobics class pulls a hamstring.
    ---
    * Origin: (1:3634/12.73)