{"id":178,"date":"2010-09-24T14:16:35","date_gmt":"2010-09-24T06:16:35","guid":{"rendered":"https:\/\/swf.com.tw\/?p=178"},"modified":"2010-09-24T14:17:25","modified_gmt":"2010-09-24T06:17:25","slug":"%e4%bd%8e%e6%88%90%e6%9c%ac%e3%80%81%e8%b6%85%e7%b0%a1%e5%96%ae%e4%b9%8bdvb-t%e6%95%b8%e4%bd%8d%e9%9b%bb%e8%a6%96%e5%a4%a9%e7%b7%9a%e8%a3%bd%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/swf.com.tw\/?p=178","title":{"rendered":"\u4f4e\u6210\u672c\u3001\u8d85\u7c21\u55ae\u4e4bDVB-T\u6578\u4f4d\u96fb\u8996\u5929\u7dda\u88fd\u4f5c"},"content":{"rendered":"<p><strong>\u4f4e\u6210\u672c\u3001\u8d85\u7c21\u55ae\u4e4bDVB-T\u6578\u4f4d\u96fb\u8996\u5929\u7dda\u88fd\u4f5c <\/strong><br \/>\u6587\u2215\u8d99\u82f1\u5091 <\/p>\n<p>\u62dc\u8b80Mobile01\u7db2\u7ad9\u4e0a\u7684<a href=\"http:\/\/www.mobile01.com\/topicdetail.php?f=496&amp;t=99913\" target=\"_blank\">DIY\u6578\u4f4d\u96fb\u8996\u5929\u7dda\u6559\u5b78<\/a>\u4e4b\u5f8c\uff0c\u6211\u4e5f\u8d81\u8457\u4e2d\u79cb\u5047\u671fDIY\u4e86\u4e00\u500b\u96d9\u83f1\u5f62\u5929\u7dda\u3002\u88fd\u4f5c\u539f\u7406\u548cMobile01\u7684\u5927\u5927\u76f8\u540c\uff0c\u53ea\u662f\u8a08\u7b97\u6578\u64da\u4e0d\u592a\u4e00\u6a23\u3002 <\/p>\n<h4>\u6578\u4f4d\u96fb\u8996\u5929\u7dda<\/h4>\n<p>\u5929\u7dda\u7684\u4f5c\u7528\u662f\u6355\u6349\u7279\u5b9a\u983b\u7387\u7684\u96fb\u6ce2\u3002\u7576\u5929\u7dda\u7684\u9577\u5ea6\u7b49\u65bc\u96fb\u6ce2\u7684\u6ce2\u9577\u6642\uff0c\u5929\u7dda\u5c07\u548c\u96fb\u6ce2\u9054\u6210\u5171\u632f\uff0c\u6536\u8a0a\u6548\u679c\uff08\u611f\u5ea6\uff09\u6700\u597d\u3002 <\/p>\n<p>\u4e0d\u904e\uff0c\u5929\u7dda\u7684\u9577\u5ea6\u901a\u5e38\u4e0d\u53d6\u5168\u6ce2\u9577\uff0c\u800c\u662f\u6ce2\u9577\u7684\u4e00\u534a\u6216\u56db\u5206\u4e4b\u4e00\u7b49\u6578\u503c\uff0c\u4ee5\u4fbf\u6e1b\u5c11\u5929\u7dda\u7684\u9ad4\u7a4d\u3002\u4f8b\u5982\uff0c\u5728\u6709\u7dda\u96fb\u8996\u666e\u53ca\u4e4b\u524d\uff0c\u5bb6\u5bb6\u6236\u6236\u6a13\u9802\u7684\u96fb\u8996\u5929\u7dda\uff08\u4ea6\u5373\uff1a\u9b5a\u9aa8\u5929\u7dda\uff09\uff0c\u5c31\u662f\u63a1\u534a\u6ce2\u9577\u3002 <\/p>\n<p>\u7136\u800c\uff0c\u6bcf\u500b\u96fb\u8996\u983b\u9053\u7684\u767c\u5c04\u983b\u7387\u2215\u6ce2\u9577\u90fd\u4e0d\u540c\uff0c\u5929\u7dda\u7684\u9577\u5ea6\u7406\u7576\u96a8\u4e4b\u6539\u8b8a\u3002\u90a3\u9ebc\uff0c\u6536\u899610\u500b\u983b\u9053\u5c31\u8981\u6e96\u509910\u652f\u9577\u77ed\u4e0d\u4e00\u7684\u5929\u7dda\uff0c\u6beb\u7121\u5be6\u7528\u6027\u53ef\u8a00\u3002 <\/p>\n<h4>\u8a08\u7b97\u983b\u7387\u8207\u6ce2\u9577 <\/h4>\n<p>\u5728\u5be6\u4f5c\u4e0a\uff0c\u5929\u7dda\u7684\u9577\u5ea6\u901a\u5e38\u53d6\u6536\u8996\u983b\u7387\u7bc4\u570d\u7684\u4e2d\u9593\u503c\u3002\u4ee5\u53f0\u7063\u7684DVB-T\u6578\u4f4d\u983b\u9053\u70ba\u4f8b\uff0c\u6839\u64da\u300cDTVC \u793e\u5718\u6cd5\u4eba\u53f0\u7063\u6578\u4f4d\u96fb\u8996\u5354\u6703\u300d\u7684<a href=\"http:\/\/www.dtvc.org.tw\/knowledge_03.html\" target=\"_blank\">\u983b\u7387\u8868\u6578\u64da<\/a>\uff0c\u6700\u4f4e\u983b\u7387\u70ba530MHz\uff0c\u6700\u9ad8\u5247\u662f596MHz\uff0c\u56e0\u6b64\uff0c\u4e2d\u9593\u7684\u983b\u7387\u503c\u70ba566MHz\uff1a <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"\/images\/hardware\/HDTV\/middle_frequency.png\" width=\"330\" height=\"128\" alt=\"\u4e2d\u9593\u7684\u983b\u7387\u503c\u70ba566MHz\" \/><\/p>\n<p>\u96fb\u78c1\u6ce2\u7684\u901f\u5ea6\u7b49\u65bc\u5149\u901f\uff0c\u6bcf\u79d229.97925\u842c\u516c\u91cc\uff0c\u5927\u7d04\u662f30\u842c\u516c\u91cc\u2215\u79d2\uff0c\u5728\u9019\u500b\u901f\u5ea6\u4e0b\uff0c\u6bcf\u79d2\u7d04\u53ef\u7e5e\u884c\u5730\u7403\u4e03\u5708\u534a\u3002\u96fb\u6ce2\u5728<strong>\u771f\u7a7a\u4e2d<\/strong>\u7684<strong>\u6ce2\u9577<\/strong>\u8a08\u7b97\u516c\u5f0f\u70ba\u300c<strong>\u5149\u901f\uff08Km\uff09\u9664\u4ee5\u983b\u7387\uff08MHz\uff09<\/strong>\u300d\uff1a <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"\/images\/hardware\/HDTV\/wavelength.png\" width=\"227\" height=\"63\" alt=\"\u96fb\u6ce2\u5728\u771f\u7a7a\u4e2d\u7684\u6ce2\u9577\u8a08\u7b97\u516c\u5f0f\" \/><\/p>\n<p>\u5929\u7dda\u672c\u9ad4\u9700\u7528<strong>\u5c0e\u96fb\u6027\u826f\u597d\u7684\u91d1\u5c6c<\/strong>\u88fd\u4f5c\uff0c\u4f8b\u5982\uff0c\u9285\u548c\u92c1\u3002\u4e0d\u5efa\u8b70\u4f7f\u7528\u8863\u67b6\uff0c\u56e0\u70ba\u8863\u67b6\u7684\u91d1\u5c6c\u542b\u9435\uff0c\u963b\u6297\u8f03\u9ad8\u4e14\u5bb9\u6613\u751f\u93fd\u3002 <\/p>\n<h4>\u901f\u5ea6\u4fc2\u6578\uff08velocity factor\uff09\u6216\u6ce2\u9577\u77ed\u7e2e\u7387\uff08wavelength shortening  rate\uff09\u7684\u8003\u91cf <\/h4>\n<p>\u96fb\u6ce2\u5728\u7a7a\u6c23\u6216\u91d1\u5c6c\u5c0e\u9ad4\u7684\u50b3\u64ad\u901f\u5ea6\u8f03\u6162\uff0c\u5728\u8a08\u7b97\u6ce2\u9577\u6642\uff0c\u8981\u628a\u9019\u500b\u56e0\u7d20\u8003\u91cf\u9032\u53bb\u3002\u96fb\u78c1\u6ce2\u5728\u5be6\u969b\u74b0\u5883\u4e2d\u7684\u50b3\u64ad\u901f\u5ea6\uff0c\u548c\u771f\u7a7a\u4e2d\u7684\u50b3\u64ad\u901f\u5ea6\u7684\u6bd4\u4f8b\uff0c\u7a31\u70ba<strong>\u901f\u5ea6\u4fc2\u6578\uff08velocity factor\uff09<\/strong>\u6216\u8005\u300c\u901f\u5ea6\u56e0\u5b50\u300d\uff0c\u5728\u4f7f\u7528\u9285\u7dda\u7684\u5834\u5408\uff0c<strong>\u901f\u5ea6\u4fc2\u6578\u7684\u503c\u901a\u5e38\u63a10.95\u62160.97\u3002 <\/strong><\/p>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"\/images\/hardware\/HDTV\/velocity-factor.png\" width=\"341\" height=\"38\" alt=\"\u901f\u5ea6\u4fc2\u6578\uff08velocity factor\uff09\" \/><\/p>\n<p>\u6709\u4e9b\u7db2\u53cb\u5f15\u7528\u7684\u4fc2\u6578\u662f\u300c<strong>\u77ed\u7e2e\u7387<\/strong>\u300d\uff0c\u6b64\u70ba\u96fb\u78c1\u6ce2\u5728\u5be6\u969b\u74b0\u5883\u4e2d\u50b3\u64ad\u7684\u6ce2\u9577\uff0c\u548c\u5728\u771f\u7a7a\u4e2d\u50b3\u64ad\u7684\u6ce2\u9577\u7684\u6bd4\u503c\uff0c\u7a31\u70ba<strong>\u6ce2\u9577\u77ed\u7e2e\u7387\uff08wavelength shortening rate\uff09<\/strong>\u3002\u5169\u8005\u7684\u9053\u7406\u76f8\u901a\u3002 <\/p>\n<h4>\u81ea\u88fd\u96d9\u83f1\u5f62\u5929\u7dda\uff08double-quad antenna\uff09 <\/h4>\n<p>\u672c\u6587\u81ea\u88fd\u7684\u5929\u7dda\u5f62\u5f0f\u7a31\u70ba<strong>\u96d9\u83f1\u5f62\u5929\u7dda<\/strong>\uff0c\u63a1\u56db\u5206\u4e4b\u4e00\u6ce2\u9577\uff0c\u56e0\u6b64\u5929\u7dda\u7684\u55ae\u908a\u9577\u5ea6\u8a08\u7b97\u65b9\u5f0f\u5982\u4e0b\uff1a <\/p>\n<p><img decoding=\"async\" loading=\"lazy\" src=\"\/images\/hardware\/HDTV\/antenna-length.png\" alt=\"\u5929\u7dda\u7684\u55ae\u908a\u9577\u5ea6\u503c\" width=\"395\" height=\"54\" \/><\/p>\n<p>\u96d9\u83f1\u5f62\u5929\u7dda\u7684\u7d44\u88dd\u5716\u5982\u4e0b\uff1a <\/p>\n<p align=\"center\"><img decoding=\"async\" loading=\"lazy\" src=\"\/images\/hardware\/HDTV\/double-quad-antenna.png\" width=\"445\" height=\"505\" alt=\"\u81ea\u88fd\u96d9\u83f1\u5f62\u5929\u7dda\uff08double-quad antenna\uff09\u7684\u7d44\u88dd\u5716\" \/><\/p>\n<p>\u6211\u5011\u4f4f\u5bb6\u9644\u8fd1\u7684\u4e94\u91d1\u884c\u8ca9\u8ce3\u7684\u55ae\u82af\u9285\u7dda\uff08\u5c31\u662f\u4e00\u822c\u6c34\u96fb\u7528\u7684\u96fb\u7dda\uff09\uff0c\u67091.6mm\u548c2.0mm\u5169\u7a2e\u898f\u683c\uff0c\u6211\u9078\u7528\u662f1.6mm\uff0c\u4e00\u7c73\u65b0\u53f0\u5e6313\u5143\uff0c\u6211\u8cb71.5\u7c73\u3002\u540c\u8ef8\u96fb\u7e9c\u7dda\u662fN\u5e74\u524d\u63a5\u7b2c\u56db\u53f0\u6642\u7684\u5269\u9918\u7dda\u6750\uff0c\u5916\u52a0\u4e00\u500b5C\u96fb\u7e9c\u63a5\u982d\uff0c\u6210\u672c\u53ea\u898125\u5143\u3002 <\/p>\n<p>\u5e95\u4e0b\u662f\u6298\u597d\u83f1\u5f62\uff08\u5169\u500b\u6b63\u65b9\u5f62\uff09\uff0c\u518d\u8207\u540c\u8ef8\u96fb\u7e9c\u7dda\u710a\u63a5\u5f8c\u7684\u6a23\u5b50\uff1a <\/p>\n<p align=\"center\"><img decoding=\"async\" loading=\"lazy\" src=\"\/images\/hardware\/HDTV\/double-quad-antenna-1.jpg\" alt=\"\u710a\u63a5\u5929\u7dda\u8207\u540c\u8ef8\u96fb\u7e9c\" width=\"440\" height=\"299\" \/><\/p>\n<p>\u540c\u8ef8\u96fb\u7e9c\u5167\u90e8\u7684\u63a5\u5730\uff0c\u63a1\u7528\u934d\u92c5\u9285\u6216\u92fc\u8cea\u7de8\u7e54\u7db2\uff0c\u4e0d\u5bb9\u6613\u710a\u63a5\u3002\u6211\u662f\u5148\u526a\u4e00\u6bb5\u9285\u7dda\u5c07\u5b83\u63d2\u5165\u7de8\u7e54\u7db2\u5f8c\uff0c\u518d\u710a\u63a5\u5230\u5929\u7dda\u3002\u4e0b\u5716\u662f\u6700\u5f8c\u505a\u7d55\u7de3\u5305\u8986\u7684\u6a23\u5b50\uff1a <\/p>\n<p align=\"center\"><img decoding=\"async\" loading=\"lazy\" src=\"\/images\/hardware\/HDTV\/double-quad-antenna-2.jpg\" alt=\"\u7d55\u7de3\u8655\u7406\" width=\"440\" height=\"280\" \/><\/p>\n<p>\u6574\u500b\u5929\u7dda\u4e26\u4e0d\u5927\uff1a <\/p>\n<p align=\"center\"><img decoding=\"async\" loading=\"lazy\" src=\"\/images\/hardware\/HDTV\/double-quad-antenna-3.jpg\" alt=\"\u81ea\u88fd\u96d9\u83f1\u5f62\u5929\u7dda\u7684\u6574\u9ad4\u5916\u89c0\" width=\"330\" height=\"423\" \/><\/p>\n<h4>\u5f8c\u8a18<\/h4>\n<p>DIY\uff0c\u6709\u6642\u5019\u662f\u70ba\u4e86\u4eab\u53d7\u81ea\u5df1\u52d5\u624b\u505a\u7684\u904e\u7a0b\uff0c\u6700\u597d\u9084\u53ef\u4ee5\u6eff\u8db3\u7279\u5b9a\u7684\u9700\u6c42\uff0c\u5c31\u50cf\u7d44\u5408\u50a2\u4ff1\u548c\u6539\u9020\u96fb\u5b50\u5c0f\u73a9\u610f\u4e00\u6a23\u3002\u505a\u597d\u6578\u4f4d\u5929\u7dda\u4e26\u8208\u6c96\u6c96\u5730\u6e2c\u8a66\u6536\u8996\u4e4b\u5f8c\uff0c\u6211\u958b\u59cb\u61f7\u7591\u88fd\u4f5c\u9019\u5929\u7dda\u7684\u76ee\u7684\uff0c\u597d\u50cf\u53ea\u662f\u70ba\u4e86\u9a57\u8b49\u5929\u7dda\u7684\u88fd\u4f5c\u539f\u7406\u7121\u8aa4\u3002 <\/p>\n<p>\u6578\u4f4d\u96fb\u8996\u7bc0\u76ee\u7684\u5167\u5bb9\uff0c\u6709\u7dda\u96fb\u8996\u4e5f\u770b\u5f97\u5230\uff1b\u6709\u7dda\u96fb\u8996\u53f0\u770b\u4e0d\u5230\u7684\u516c\u5171\u96fb\u8996HiHD\u9ad8\u756b\u8cea\u7bc0\u76ee\uff0c\u6211\u5011\u5bb6\u4e5f\u6536\u4e0d\u5230\uff08\u56e0\u70ba<a href=\"http:\/\/zh.wikipedia.org\/zh-tw\/HiHD\">HiHD\u8a66\u64ad\u8a0a\u865f\u8f49\u64ad\u7ad9<\/a>\u7684\u7b2c\u4e00\u671f\u5de5\u7a0b\uff0c\u96c6\u4e2d\u5728\u53f0\u7063\u5317\u90e8\u548c\u5357\u90e8\uff09\u3002 <\/p>\n<p>\u770b\u6a23\u5b50\uff0c\u60f3\u6b23\u8cde\u9ad8\u756b\u8cea\u96fb\u8996\u7bc0\u76ee\uff0c\u9664\u4e86\u85cd\u5149\u5f71\u7247\u4e4b\u5916\uff0c\u7565\u904e\u885b\u661f\uff08\u88dd\u6a5f\u8cbb\u548c\u6708\u79df\u8cbb\u90fd\u4e0d\u4fbf\u5b9c\uff09\u548c\u6709\u7dda\u96fb\u8996\uff0c\u76f4\u63a5\u8d70\u5411\u7db2\u8def\u96f2\u7aef\u6bd4\u8f03\u5be6\u969b\u3002 <\/p>\n<p><strong>\u5ef6\u4f38\u95b1\u8b80 <\/strong><\/p>\n<ul>\n<li><a href=\"http:\/\/bv3fg.tripod.com\/cqm\/24\/24068.htm\">CQ\u696d\u9918\u7121\u7dda\u96fb\u96dc\u8a8c\uff1a\u96fb\u7e9c\u7684\u901f\u5ea6\u4fc2\u6578<\/a><\/li>\n<li><a href=\"http:\/\/bv3fg.tripod.com\/cqm\/36\/36086.htm\">CQ\u696d\u9918\u7121\u7dda\u96fb\u96dc\u8a8c\uff1a\u4e03\u5341\u4e94\u5e74\u7684\u56de\u61b6<\/a><\/li>\n<li><a href=\"?p=176\">\u5ef6\u9577iPhone \/ iPod Touch FM\u7acb\u9ad4\u8072\u767c\u5c04\u5668\u7684\u767c\u5c04\u8ddd\u96e2<\/a><\/li>\n<li><a href=\"?p=152\">\u6bd4\u8f03Full HD\u9ad8\u756b\u8cea\u6578\u4f4d\u651d\u5f71\u6a5f\uff1aSony HDR-XR500\u8207Canon HF S10<\/a><\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\u62dc\u8b80Mobile01\u7db2\u7ad9\u4e0a\u7684<a href=\"http:\/\/www.mobile01.com\/topicdetail.php?f=496&amp;t=99913\" target=\"_blank\">DIY\u6578\u4f4d\u96fb\u8996\u5929\u7dda\u6559\u5b78<\/a>\u4e4b\u5f8c\uff0c\u6211\u4e5f\u8d81\u8457\u4e2d\u79cb\u5047\u671fDIY\u4e86\u4e00\u500b\u96d9\u83f1\u5f62\u5929\u7dda\u3002\u88fd\u4f5c\u539f\u7406\u548cMobile01\u7684\u5927\u5927\u76f8\u540c\uff0c\u53ea\u662f\u8a08\u7b97\u6578\u64da\u4e0d\u592a\u4e00\u6a23\u3002 <\/p>\n<p align=\"center\"><img loading=\"lazy\" decoding=\"async\" src=\"\/images\/hardware\/HDTV\/double-quad-antenna.png\" width=\"445\" height=\"505\" 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