{"id":10138,"date":"2019-12-31T22:00:41","date_gmt":"2019-12-31T13:00:41","guid":{"rendered":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=10138"},"modified":"2019-12-31T22:00:41","modified_gmt":"2019-12-31T13:00:41","slug":"%e3%81%8a%e4%b9%85%e3%81%97%e3%81%b6%e3%82%8a%e6%a4%9c%e7%b4%a2%e3%82%b9%e3%82%af%e3%83%aa%e3%83%97%e3%83%88%e3%82%92%e4%bd%9c%e3%82%8b%e3%81%9e","status":"publish","type":"post","link":"https:\/\/je1sgh.mydns.jp\/je1sghblog\/?p=10138","title":{"rendered":"\u304a\u4e45\u3057\u3076\u308a\u691c\u7d22\u30b9\u30af\u30ea\u30d7\u30c8\u3092\u4f5c\u308b\u305e"},"content":{"rendered":"\n

FT8\/FT4を運用してまず気がつくのは，1st QSOの人が非常に多いこととです．いままで40年以上アマチュア無線やっていて，国内外で一度も交信したことがない人がこんなにもいるものなのだなと感心しています．<\/p>\n\n\n\n

加えて，何十年ぶりに交信する人がけっこう多いことにも驚きます．ただ，交信の際にこれを伝える術があるようなないようなで，ちょっともどかしいです．網羅的に調べているわけではないので，ものすごく久しぶりでありながら気がつかないことも多数あるはずです．<\/p>\n\n\n\n

気がついた例をいくつか掲示します．<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

実に，39年前と37年前に，SSBで交信して以来です．QRZ.COM調べで，名前はAlで一致していますが，QTHはHamilton近くですがちょっと違っています．まず，同じ人で間違いないと思います．<\/p>\n\n\n\n

ちなみに青字の住所は交信時の筆者の設置場所です．<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

こちらは，さらに上を行く，40年ぶりの交信です．40年前にコピーしたお名前と住所がQRZ.COMのデータと一致します．現在では，あまり国内との交信にはご興味がないのかなと言う印象でした．<\/p>\n\n\n\n

そんなこんなで，せっかく交信データをMySQLコンパチのMariaDBに保存しているのだから，今度網羅的に調べてみることにします．<\/p>\n\n\n\n

  1. 1st QSOから時間が経っている<\/li>
  2. 最後のQSOから時間が経っている<\/li><\/ol>\n\n\n\n

    この2条件について，約10万件の交信レコードから抽出するスクリプトを作ってみることにします．<\/p>\n\n\n\n

    交信しているときにいつもこのことを思うのですがすぐ忘れてしまうので，To Doのメモ的な意味で記事にしました．<\/p>\n","protected":false},"excerpt":{"rendered":"

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