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旧 Aug 5th, 2010, 15:34   只看该作者   #401
zxying
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NO. This one : http://www.canadacomputers.com/produ...item_id=021144 $33...

I want the three inputs because I have two ...
你干嘛装2个天线?并起来还是分开的?
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旧 Aug 5th, 2010, 15:37   只看该作者   #402
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你干嘛装2个天线?并起来还是分开的?
当然是并起来,二个对不同方向

If I could help you, I would help you.
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旧 Aug 5th, 2010, 23:07   只看该作者   #403
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当然是并起来,二个对不同方向
可能是因为天线并联时,信号互相干扰,放大器加强了干扰,结果都看不成。不并联,只用一个天线接放大器试试。调试时慢慢转方向,找最佳点。
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感谢 luyuan
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HHH (Aug 6th, 2010)
旧 Aug 6th, 2010, 09:04   只看该作者   #404
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当然是并起来,二个对不同方向
你那里两个方向的角度也就30度吧,根本没必要用2个天线并,一个天线的BEAM WIDTH就覆盖了2边的信号。既然有2天线,倒不如分开来,一个接电脑,一个接电视
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感谢 zxying
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HHH (Aug 6th, 2010)
旧 Aug 6th, 2010, 09:42   只看该作者   #405
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可能是因为天线并联时,信号互相干扰,放大器加强了干扰,结果都看不成。不并联,只用一个天线接放大器试试。调试时慢慢转方向,找最佳点。
这个放大器确实有问题,接上去就像断路一样没任何信号。已经退了。
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旧 Aug 6th, 2010, 09:47   只看该作者   #406
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你那里两个方向的角度也就30度吧,根本没必要用2个天线并,一个天线的BEAM WIDTH就覆盖了2边的信号。既然有2天线,倒不如分开来,一个接电脑,一个接电视
原来试过,一个天线不能同时cover CN Tower & Buffalo。其实现在最好的时候可以收到20+,但就是不稳定,想看的时候又没了。所以考虑加放大器。
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旧 Dec 7th, 2010, 07:51   只看该作者   #407
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默认

I made this one and it works very good.

http://www.lumenlab.com/forums/uploads/post-28330-1176775511.jpg

农民团结起来,共同提高粮食价格,每公斤提到5000元,愿买就买,不买就吃屎去吧
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感谢 deberg
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creativeccc (Dec 7th, 2010)
旧 Dec 7th, 2010, 15:59   只看该作者   #408
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I made this one and it works very good.

http://www.lumenlab.com/forums/uploads/post-28330-1176775511.jpg
做得很好。有点意思。 好像没有看到过市面上卖这种形状的,信号比鱼骨天线好多少?

买的没有卖的精
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旧 Dec 7th, 2010, 22:01   只看该作者   #409
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做得很好。有点意思。 好像没有看到过市面上卖这种形状的,信号比鱼骨天线好多少?
这个是我做过的三种天线中效果最好的,另外两种是鱼骨式和菱形天线。都没有加反射板。这个天线的介绍在首个帖子的链接页的第23页,这个是个美国的专利。照片我是用的那个论坛上的照片,不过我做的跟这个几乎一样了。
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旧 Dec 8th, 2010, 09:05   只看该作者   #410
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默认

很强悍啊

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旧 Dec 15th, 2010, 21:29   只看该作者   #411
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默认 deberg 大侠的电视天线如何做?

deberg 大侠, 您标示的电视天线出处没找到, 能给个尺寸吗, 我也想做一个试试.
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旧 Dec 16th, 2010, 18:07   只看该作者   #412
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deberg 大侠, 您标示的电视天线出处没找到, 能给个尺寸吗, 我也想做一个试试.
下面的文字是我从那个论坛copy过来的:
“Here is a quicky on how I did it. Take picture attached below and print it out. Write down the dimension shown on the spreadsheet on page 8 of the patent for item 670. It is 6.45 inches away from the center. Find a xerox machine and enlarge half of it until you get 6.45 inches for 670. I said half of it becuse the whole thing will not fit on a 11x17 sheet of paper. I was not that exact on mine because I was too excited. When you get your xerox to the correct scale, use it as a guide to run your wire. I ran the wire from the tip running down the center of each wing. You can build a jig with nails and plywood for better accuracy (I did mine freehand, again i was excited). There you go. ”

专利文件从下面下载:
http://www.google.com/patents?vid=US...BAJ&dq=6922179

然后你根据自己的打印机把670放大到6.45英寸就可以了,然后买铜线照着做。
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感谢 deberg
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luyuan (Mar 9th, 2011)
旧 Dec 16th, 2010, 20:03   只看该作者   #413
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默认 真没想到这么快就回复了.

好好研究研究我也享受一把. 再次感谢大侠热情回复.
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旧 Mar 9th, 2011, 13:51   只看该作者   #414
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这个天线比网格形的制作简单,好像更适合放在室内。
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旧 Sep 22nd, 2011, 21:41   只看该作者   #415
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现在hamilton的CHCH转到VHF了,信号最弱,能收到这个台,其它台就没什么问题了。
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旧 Sep 23rd, 2011, 12:40   只看该作者   #416
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今天早上能调到32个台。是少了2-3的情况下。多了8-1,2,21-1,2...
上面那个天线可能就收VHF有点好处,其它估计比不上4BAY的。因为没有反射器,呈现对称8字型特性图(双方向一样的),就比不上单向的天线了。接收效果是跟空间面积成正比的,空间场强就那么多了。
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旧 Sep 23rd, 2011, 13:39   只看该作者   #417
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今天早上能调到32个台。是少了2-3的情况下。多了8-1,2,21-1,2...
上面那个天线可能就收VHF有点好处,其它估计比不上4BAY的。因为没有反射器,呈现对称8字型特性图(双方向一样的),就比不上单向的天线了。接收效果是跟空间面积成正比的,空间场强就那么多了。
8-1,2,21-1,2...Rochester的台不算数的,估计明天就没有了,天气的原因
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旧 Sep 23rd, 2011, 22:37   只看该作者   #418
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8-1,2,21-1,2...Rochester的台不算数的,估计明天就没有了,天气的原因
知道,也说明天线够强。
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旧 Sep 25th, 2011, 19:58   只看该作者   #419
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默认 channel 9-1 我这段时间收不到了,有人能收到吗?

问一下: channel 9-1 我这几个月时间都收不到了,有人能收到吗?(in Scarborough)
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旧 Sep 25th, 2011, 21:34   只看该作者   #420
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问一下: channel 9-1 我这几个月时间都收不到了,有人能收到吗?(in Scarborough)
这个最强台之一。
BTW,今晚特好信号,刚刚能调出36个台,但是没有29-1,2. 再扫又少了,多了没见过的31等。
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