{"type":"rich","height":"190","title":"430MHz\u306e\u4ea4\u4fe1\uff1a\u9001\u4fe1\u51fa\u529b\u3067S\u30e1\u30fc\u30bf\u306f\u3069\u3053\u307e\u3067\u52d5\u304f\uff1f","provider_name":"Hatena Blog","author_url":"https://blog.hatena.ne.jp/JH1LHV/","published":"2026-01-18 20:10:55","width":"100%","provider_url":"https://hatena.blog","version":"1.0","categories":["\u30cf\u30e0\u96d1\u8a18"],"blog_url":"https://www.jh1lhv.tokyo/","description":"\u5148\u65e5\u306e QSO \u30d1\u30fc\u30c6\u30a3\u3067\u3001 430MHz \u306e\u898b\u901a\u3057\u306e\u826f\u3044\u76f4\u63a5\u6ce2\u3067\u9001\u4fe1\u51fa\u529b\u3092\u4e0a\u3052\u308b\u3068\u3001\u76f8\u624b\u5c40\u306e S \u30e1\u30fc\u30bf\u306f\u3069\u308c\u307b\u3069\u5909\u5316\u3059\u308b\u306e\u304b \u3068\u8a00\u3063\u305f\u3053\u3068\u304c\u8a71\u984c\u306b\u306a\u3063\u305f\u306e\u3067\u3001\u4eca\u56de\u3001\u5177\u4f53\u7684\u306a\u6570\u5024\u3092\u6c7a\u3081\u3066\u3001\u9001\u4fe1\u51fa\u529b\u3068 S \u30e1\u30fc\u30bf\u306e\u95a2\u4fc2\u3092\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u307e\u3068\u3081\u3066\u307f\u307e\u3057\u305f\u3002 S\u30e1\u30fc\u30bf\u306e\u57fa\u6e96 \u4e00\u822c\u7684\u306b\u8a00\u308f\u308c\u3066\u3044\u308b\u76ee\u5b89\u306f\u6b21\u306e\u901a\u308a\u3067\u3059\u3002 S9 = 50\u00b5V \u96fb\u529b\u304c 2\u500d \u2192 +3 dB \u96fb\u529b\u304c 4\u500d \u2192 +6 dB \u8ddd\u96e2\u304c 2\u500d \u2192 \u22126 dB VHF/UHF \u3067\u306f\u300c1S \u2252 3dB\u300d\u304f\u3089\u3044\u306e\u611f\u899a\u3067\u52d5\u3044\u3066\u3044\u308b\u7121\u7dda\u6a5f\u304c\u591a\u3044\u3088\u3046\u3067\u3059\u3002 \u9001\u4fe1\u51fa\u529b\u3092\u5909\u3048\u308b\u3068\u3001S\u30e1\u30fc\u30bf\u306f\u3069\u3046\u306a\u308b\uff1f 10W \u2192 1W \u306b\u4e0b\u3052\u305f\u5834\u5408 \u51fa\u529b\u306f 1/10\u2026","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fwww.jh1lhv.tokyo%2Fentry%2F2026%2F01%2F18%2F201055\" title=\"430MHz\u306e\u4ea4\u4fe1\uff1a\u9001\u4fe1\u51fa\u529b\u3067S\u30e1\u30fc\u30bf\u306f\u3069\u3053\u307e\u3067\u52d5\u304f\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>","url":"https://www.jh1lhv.tokyo/entry/2026/01/18/201055","blog_title":"JH1LHV\u306e\u96d1\u8a18\u5e33","author_name":"JH1LHV","image_url":"https://cdn.user.blog.st-hatena.com/default_entry_og_image/90497257/1753059143717722"}