{"height":"190","author_url":"https://blog.hatena.ne.jp/JH1LHV/","published":"2026-01-24 16:03:21","provider_url":"https://hatena.blog","provider_name":"Hatena Blog","title":"430MHz\u306e\u4ea4\u4fe1\uff1a\u30a2\u30f3\u30c6\u30ca\u3092\u9ad8\u304f\u3059\u308b\u3068S\u30e1\u30fc\u30bf\u306f\u3069\u308c\u304f\u3089\u3044\u4e0a\u304c\u308b\uff1f","blog_title":"JH1LHV\u306e\u96d1\u8a18\u5e33","image_url":"https://cdn.user.blog.st-hatena.com/default_entry_og_image/90497257/1753059143717722","blog_url":"https://www.jh1lhv.tokyo/","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.jh1lhv.tokyo%2Fentry%2F2026%2F01%2F24%2F160321\" title=\"430MHz\u306e\u4ea4\u4fe1\uff1a\u30a2\u30f3\u30c6\u30ca\u3092\u9ad8\u304f\u3059\u308b\u3068S\u30e1\u30fc\u30bf\u306f\u3069\u308c\u304f\u3089\u3044\u4e0a\u304c\u308b\uff1f - JH1LHV\u306e\u96d1\u8a18\u5e33\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","type":"rich","author_name":"JH1LHV","version":"1.0","categories":["\u30cf\u30e0\u96d1\u8a18"],"width":"100%","url":"https://www.jh1lhv.tokyo/entry/2026/01/24/160321","description":"\u524d\u56de\u306e\u8a18\u4e8b\u3067\u306f\u3001430MHz \u5e2f\u306e\u3088\u3046\u306a\u898b\u901a\u3057\u901a\u4fe1\u306b\u304a\u3044\u3066\u300c\u9001\u4fe1\u51fa\u529b\u3092\u4e0a\u3052\u3066\u3082\u3001\u76f8\u624b\u5c40\u306e S \u30e1\u30fc\u30bf\u306f\u601d\u3063\u305f\u307b\u3069\u632f\u308c\u306a\u3044\u300d\u3068\u3044\u3046\u8a71\u3092\u3057\u307e\u3057\u305f\u3002 \u51fa\u529b\u30922\u500d\u306b\u3057\u3066\u3082\u3001S \u30e1\u30fc\u30bf\u306e\u91dd\u306f1\u672c\u52d5\u304f\u304b\u3069\u3046\u304b\uff08+3dB\uff09 \u51fa\u529b\u30924\u500d\u306b\u3057\u3066\u3001\u3084\u3063\u3068 S \u30e1\u30fc\u30bf\u304c\u7d041\u301c2\u672c\u52d5\u304f\uff08+6dB\uff09 \u203b S \u304c\u632f\u308c\u3084\u3059\u3044\u6a5f\u7a2e\uff081\u76ee\u76db = 3dB \uff5e 4dB\uff09\u3092\u524d\u63d0\u4eca\u56de\u306f\u305d\u306e\u7b2c2\u5f3e\u3068\u3057\u3066\u3001\u300c\u3058\u3083\u3042\u3001\u30a2\u30f3\u30c6\u30ca\u3092\u9ad8\u304f\u3057\u305f\u3089\u3069\u3046\u306a\u308b\u306e\uff1f\u300d\u3068\u3044\u3046\u3053\u3068\u306b\u3064\u3044\u3066\u3001\u6280\u8853\u7684\u306a\u7406\u5c48\uff08\u5c11\u3057\u3060\u3051\u6570\u5f0f\uff09\u3092\u4ea4\u3048\u3066\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002\u7d50\u8ad6\u304b\u3089\u5148\u306b\u8a00\u3046\u3068\u3001 \u9ad8\u3055\u30922\u500d\u306b\u3059\u308b\u3053\u3068\u306f\u3001\u51fa\u529b\u30924\u500d\u306b\u3059\u308b\u306e\u3068\u540c\u3058\u52b9\u679c\u304c\u3042\u308a\u307e\u3059\u3002 \u4eca\u56de\u3082\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u56f3\u306b\u307e\u3068\u3081\u3066\u2026"}