{"id":281,"date":"2020-10-09T11:46:47","date_gmt":"2020-10-09T02:46:47","guid":{"rendered":"http:\/\/www.tmele.jp\/en2020\/?post_type=case&#038;p=281"},"modified":"2021-01-09T07:56:36","modified_gmt":"2021-01-08T22:56:36","slug":"am-fm%e3%83%a9%e3%82%b8%e3%82%aa%e5%86%8d%e9%80%81%e4%bf%a1%e3%82%b7%e3%82%b9%e3%83%86%e3%83%a0","status":"publish","type":"case","link":"https:\/\/www.tmele.jp\/en2020\/case\/281\/","title":{"rendered":"AM\/FM Radio Broadcast"},"content":{"rendered":"<div class=\"inside fields flexs nowrap justify\">\n<div>\n<p>The retransmission device is installed in tunnel to redelivery AM\/FM radio waves.<br \/>\nFM radio uses LCX(*) for receiving antenna, but LCX has large transmission loss in the long-distance tunnel.<br \/>\nTo solve this problem when FM radio is used for long-distance tunnels, it uses optical relay.<br \/>\nWe provide high-frequency products that are RoF(*), Transmission\/Reception amplifiers, etc. for optical relay.<\/p>\n<p><small>(*) LCX \uff1a Leaky CoaXial cable<br \/>\n(*) RoF \uff1a Radio On Fiber<\/small><\/p>\n<\/p><\/div>\n<figure><img decoding=\"async\" src=\"https:\/\/www.tmele.jp\/en2020\/wp-content\/themes\/tamagawadenshi\/images\/case\/case03_infra05_fmam_0.jpg\" alt=\"\"><\/figure>\n<\/div>\n<p><!--h2 class=\"underbar-headcolor\">\u30d6\u30ed\u30c3\u30af\u6982\u8981<\/h2>\n\n\n\n\n<div>\n<img decoding=\"async\" src=\"[sctpl]\/images\/case\/case03_infra05_fmam_1.jpg\" width=\"1000\" height=\"auto\" class=\"alignnone size-full wp-image-249\" alt=\"\u30e9\u30b8\u30aa\u518d\u653e\u9001 \u30a4\u30e1\u30fc\u30b8\u56f3\" \/>\n\n\n<p style=\"text-align:center;\">\u30e9\u30b8\u30aa\u518d\u653e\u9001 \u30a4\u30e1\u30fc\u30b8\u56f3<\/p>\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n<\/div>\n\n\n\n\n\n<div>\n<img decoding=\"async\" src=\"[sctpl]\/images\/case\/case03_infra05_fmam_2_1000x280.jpg\" width=\"1000\" height=\"auto\" class=\"alignnone size-full wp-image-249\" alt=\"\u30b7\u30b9\u30c6\u30e0 \u7cfb\u7d71\u56f3\" \/>\n\n\n<p style=\"text-align:center;\">\u30b7\u30b9\u30c6\u30e0 \u7cfb\u7d71\u56f3<\/p>\n\n\n<\/div>\n\n\n\n\n\n<h3>\u5b9f\u7e3e\u30d6\u30ed\u30c3\u30af\u306e\u6a5f\u80fd<\/h3>\n\n\n\n\n<p>\u5c4b\u5916\u306b\u8a2d\u7f6e\u3055\u308c\u305f\u7a7a\u4e2d\u7dda\u304b\u3089\u306e\u53d7\u4fe1\u30a2\u30ca\u30ed\u30b0\u4fe1\u53f7\u306f\u3001\u53d7\u4fe1\u7a7a\u4e2d\u7dda\u306b\u3066\u5404\u653e\u9001\u5c40\u304b\u3089\u306e\u53d7\u4fe1\u30ec\u30d9\u30eb\u3092\u5897\u5e45\u3057\u307e\u3059\u3002\u6b21\u306bE\/O\u5909\u63db\u5668\u306b\u3066\u5149\u4fe1\u53f7\u306b\u5909\u63db\u3057\u9001\u4fe1\u5c40\u5074\u3078\u5149\u30d5\u30a1\u30a4\u30d0\u30fc\u306b\u3066\u4f1d\u9001\u3055\u308c\u307e\u3059\u3002<br \/>\n\u9001\u4fe1\u5c40\u3067\u306f\u3001\u5149\u5206\u5c90\u3057\u518d\u9001\u4fe1\u6a5f\u3078\u5165\u529b\u3055\u308c\u3001\u4ed6\u65b9\u306f\u6b21\u306e\u9001\u4fe1\u5c40\u307e\u3067\u5149\u4f1d\u9001\u3055\u308c\u307e\u3059\u3002<br \/>\n\u518d\u9001\u4fe1\u6a5f\u3067\u306fO\/E\u5909\u63db\u5668\u3067\u30a2\u30ca\u30ed\u30b0\u4fe1\u53f7\u306b\u623b\u3055\u308c\u3001\u53d7\u4fe1\u90e8\u3067\u6307\u5b9a\u653e\u9001\u6ce2\u3092\u9078\u629e\u30fb\u5897\u5e45\u3057\u3001IF\u4fe1\u53f7\u306b\u5909\u63db\u51fa\u529b\u3057\u307e\u3059\u3002\u6b21\u306bIF\u4fe1\u53f7\u306f\u3001\u518d\u653e\u9001\u6ce2\u306b\u5909\u63db\u3057\u3001\u96fb\u529b\u5897\u5e45\u5668\u306b\u3066\u6240\u5b9a\u306e\u96fb\u529b\u307e\u3067\u5897\u5e45\u3055\u308c\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u6307\u5b9aCH\u3092\u6df7\u5408\u3057 \u7a7a\u4e2d\u7dda\u90e8\u3078\u51fa\u529b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n\n<h2 class=\"underbar-headcolor\">\u4e3b\u8981\u6027\u80fd\uff08AM\u7528\uff09<\/h2>\n\n\n\n\n<ul class=\"square36\">\n\n\n<li>\u53d7\u4fe1\u5c40\u3000\u6700\u5927\u30006\u5c40<\/li>\n\n\n\n\n<li>\u53d7\u4fe1\u5468\u6ce2\u6570\u3000531KHz\uff5e1602kHz<\/li>\n\n\n\n\n<li>\u30a2\u30f3\u30c6\u30ca\u5229\u5f97\u300020dB\u4ee5\u4e0a<\/li>\n\n\n\n\n<li>\u9001\u4fe1\u51fa\u529b\u3000\u6700\u592720\uff37\uff08CH\u3042\u305f\u308a\uff09<\/li>\n\n\n<\/ul>\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n\n\u25a0E\/O  O\/E  \u5149\u4f1d\u9001\n\n\n<ul class=\"square36\">\n\n\n<li>\u5149\u6ce2\u9577\u30001.3\u03bcm<\/li>\n\n\n\n\n<li>\u5149\u5909\u8abf\u65b9\u5f0f\u3000\u30a2\u30ca\u30ed\u30b0\u5149\u5909\u8abf<\/li>\n\n\n\n\n<li>\u5149\u30b1\u30fc\u30d6\u30eb\u3000SM<\/li>\n\n\n<\/ul>\n\n\n\n\n\n<div>\n<img decoding=\"async\" src=\"[sctpl]\/images\/case\/case03_infra05_fmam_3_1000x200.jpg\" width=\"1000\" height=\"auto\" class=\"alignnone size-full wp-image-249\" alt=\"E\/O\u5909\u63db\u5668\u3001O\/E\u5909\u63db\u5668\u30016\u6ce2\u51fa\u529b\u6df7\u5408\u5668\" \/>\n\n\n<p style=\"text-align:center;\">(\u5de6)E\/O\u5909\u63db\u5668\u3001(\u4e2d)O\/E\u5909\u63db\u5668\u3001(\u53f3)6\u6ce2\u51fa\u529b\u6df7\u5408\u5668<\/p>\n\n\n\n\n<p>&nbsp;<\/p>\n\n\n<\/div-->\n<div style=\"text-align:center;\">\n<p>&nbsp;<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/www.tmele.jp\/en2020\/wp-content\/themes\/tamagawadenshi\/images\/case\/case03_infra05_fmam_4.png\" class=\"alignnone size-full wp-image-249\" alt=\"Tunnel Connectivity Solutions\" \/><\/p>\n<p>Tunnel Connectivity Solutions<\/p>\n<\/div>\n","protected":false},"featured_media":0,"menu_order":15,"template":"","case_tax":[57],"class_list":["post-281","case","type-case","status-publish","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"The retransmission device is installed in tunnel to redelivery AM\/FM radio waves.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<link rel=\"canonical\" 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