送交者: silxirt 于 2009-01-07, 14:08:27:

• it may be possible but very difficult - neo6 (627 bytes) 2009-01-07, 20:24:23 (291557)
• Are you sure that is necessary? ADSL works for 4km - steven (27 bytes) 2009-01-07, 15:07:59 (291434)
  • 4KM cable is a lot of money (无内容) - meiyou (0 bytes) 2009-01-07, 15:32:06 (291462)
  • 说不定她们哪儿根本就没任何线路呢---要不怎么叫“无线”呢 (无内容) - foresight (0 bytes) 2009-01-07, 15:14:12 (291442)
    • 也是。 (无内容) - steven (0 bytes) 2009-01-07, 15:21:13 (291448)
• 专业人士提出专业质疑 - JJZ (131 bytes) 2009-01-07, 15:05:31 (291432)
  • 发射,接收器 must use 高功率微波 (无内容) - JJZ (0 bytes) 2009-01-07, 15:18:12 (291445)
    • 专家是冒牌的8？技术上不难的。 (无内容) - tinaliang (0 bytes) 2009-01-07, 15:27:38 (291458)
      • 专业人士提出质疑不是我 - JJZ (1330 bytes) 2009-01-07, 15:35:28 (291464)
        • 没说你。专家会说“但卫星锅原来的接收器被你拆了，光看图是被几块木板替代。”？ (无内容) - tinaliang (0 bytes) 2009-01-07, 15:37:36 (291467)
• 她的天线是用来接收的吧？3里之外的发射源跟她无关吧？ (无内容) - silxirt (0 bytes) 2009-01-07, 14:41:47 (291405)
  • 应该是点对点的，双向都应该差不多 (无内容) - foresight (0 bytes) 2009-01-07, 14:44:16 (291411)
  • wifi是双向协议 (无内容) - 4U4luC2 (0 bytes) 2009-01-07, 14:43:54 (291410)
    • it said ADSL, not wi-fi. (无内容) - steven (0 bytes) 2009-01-07, 15:10:24 (291437)
      • 她是在镇上用ADSL，然后用无线BRIDGE到乡下 (无内容) - foresight (0 bytes) 2009-01-07, 15:24:26 (291452)
      • lol, you are so hopelessly stupid - 4U4luC2 (13 bytes) 2009-01-07, 15:16:52 (291444)
        • what is the the tx distance for 802.11? (无内容) - JJZ (0 bytes) 2009-01-07, 15:30:29 (291460)
          • 说老实话，这种家用型号不动功率能上四公里我不太相信 - 4U4luC2 (1415 bytes) 2009-01-07, 15:58:51 (291485)
            • agree, 不太相信"利用一对无线路由器，自制定向天线，实现远距离传送" - JJZ (167 bytes) 2009-01-07, 16:38:55 (291512)
            • 我用canopy能上十多mile的 - foresight (64 bytes) 2009-01-07, 16:18:32 (291495)
          • if you have a 10dB gain antenna, you can 10 fold the distance. (无内容) - tinaliang (0 bytes) 2009-01-07, 15:34:17 (291463)
            • you tell me what knid antenna she used? (无内容) - JJZ (0 bytes) 2009-01-07, 15:40:15 (291469)
              • parabolic, very easy to get over 10dB. (无内容) - tinaliang (0 bytes) 2009-01-07, 15:44:34 (291473)
                • that “养兔女”制作无线接收器是 what knid antenna ? (无内容) - JJZ (0 bytes) 2009-01-07, 15:50:02 (291479)
                  • 接收器is receiver, 天线是antenna. different things. (无内容) - tinaliang (0 bytes) 2009-01-07, 15:53:57 (291482)
                    • you don't know or you are testing me? (无内容) - tinaliang (0 bytes) 2009-01-07, 15:58:56 (291486)
                    • Per her pictures, which one is the antenna? (无内容) - JJZ (0 bytes) 2009-01-07, 15:58:04 (291484)
          • there are multiple 802.11 protocols, a, b, g, n, which one you want to know? (无内容) - steven (0 bytes) 2009-01-07, 15:31:58 (291461)
        • you are right. I misread it. If so, that antana won't work at all. (无内容) - steven (0 bytes) 2009-01-07, 15:24:14 (291450)
          • 我也很怀疑她这套系统的可行性 - foresight (67 bytes) 2009-01-07, 16:01:21 (291487)
  • 你当这是小耳朵啊？ (无内容) - tinaliang (0 bytes) 2009-01-07, 14:43:36 (291409)
• The tx power is regulated so this has to be against the rules - ping_max (24 bytes) 2009-01-07, 14:17:39 (291380)
  • 中土的无线spectrum管制是个笑话。 上次我带了几个大功率 - true (42 bytes) 2009-01-07, 14:51:39 (291418)
    • 怕的就是这个，平时不管，哪一天撞上了就要倒大霉 (无内容) - foresight (0 bytes) 2009-01-07, 15:01:41 (291427)
      • 你好象在说韩寒讲的那个事 :-) (无内容) - ping_max (0 bytes) 2009-01-07, 15:03:28 (291429)
  • if you can collimate the beam, you don't have to increase the power (无内容) - 008 (0 bytes) 2009-01-07, 14:43:02 (291408)
  • 除非她改无线路由器的电路增大发射功率 - 4U4luC2 (90 bytes) 2009-01-07, 14:26:43 (291388)
    • 你说说看她把什么放大了，那个环节放大的？ - 4U4luC2 (10 bytes) 2009-01-07, 14:36:23 (291398)
      • 高增益的天线就是实际意义上的增大（某个方向上的功率增大了） (无内容) - foresight (0 bytes) 2009-01-07, 14:42:20 (291406)
        • 信产部2.4G的功率密度是频率功率密度不是方向功率密度 - 4U4luC2 (2910 bytes) 2009-01-07, 14:46:43 (291414)
          • 我们讲的是同一回事，天线增益就是方向性 (无内容) - foresight (0 bytes) 2009-01-07, 14:59:17 (291425)
          • 有高方向性的天线还允许多发射功率呢。村姑干得不够生猛。 (无内容) - tinaliang (0 bytes) 2009-01-07, 14:49:23 (291416)
      • 你没必要露出这么多牙齿，如果没有放大，我承认我错的 (无内容) - ping_max (0 bytes) 2009-01-07, 14:39:58 (291403)
      • 跟下面回贴 (无内容) - 4U4luC2 (0 bytes) 2009-01-07, 14:36:51 (291399)
    • 放大也同样要受regulation,厂家也要看产品是不是设计来干这个的 (无内容) - ping_max (0 bytes) 2009-01-07, 14:33:25 (291394)
      • 好像的确是对天线的发射功率密度有规定 (无内容) - foresight (0 bytes) 2009-01-07, 14:37:47 (291402)
        • 什么是天线发射功率密度？对某个方向角而言？ (无内容) - tinaliang (0 bytes) 2009-01-07, 14:43:01 (291407)

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